Dancho Danchev: Malware, the malicious code that haunts user of the Internet on a daily basis, has truly evolved during the last couple of years. Its potential for financial and network based abuse was quickly realized, and thus, tactics changed, consolidation between different parties occurred, and the malware scene became overly monetized, with its services available on demand. What are the driving forces behind the rise of malware? Who’s behind it, and what tactics do they use? Some of the answers will surprise you.
Let’s start from the basics. A worm
is a malicious code (standalone or file-infecting), that propagates over a network, with or without human assistance. Malware
though, should be considered as “the gang” of malicious software, in respect to their unique features. You should also consider today’s malware as:
- Modular – new features are easily added to further improve its impact, want it to have P2P propagation capability, add it, want it to disseminate over IM, done. The disturbing part is that what used to be tutorials and documents on the topic, is today’s freely available source code, or specific modules of it
- Even more powerful and destructive – full control over infected host and network connection, blocks known firewalls, antivirus signatures updates and software, eliminates rival malware, encrypts host data and asks for ransom, has rootkit capabilities, generates revenue for its authors, and that’s just the tip of the iceberg!
- Monetized – acts as a source of revenue and not fun, or just intellectual exploration anymore. Huge profits are to be made out of malware, and individuals easily turn to the dark side. A great post I came across on the Incident Handler’s Diary, mentioned that the world champions in web site defacements, Brazilian gangs, sell web servers access to phishers, but quite often, many get shot!
- On demand – in need of a specially crafted 0day malware, rent zombies for DDoS attacks or spamming? Look no further, services likes these are available, and ShadowCrew were the first to realize an underground electronic market concept. There’s a clear demand, and when there’s demand, there’s supply as well homogenous as always – Microsoft’s OS(and IE of course) dominate the market, exploit them, and exploit pretty much everyone. Linux boxes or MAC’s, are currently getting no attention at all, and they will later on, MS’s “New Era” ad campaign “Your Potential(Host, Network), Our Passion(Malware)”, can indeed be taken as a leading incentive for future generations of malware authors vision. My point is that, the so called monoculture is one of the leading factors for mass innovation during the 21st century, but even though, monopolistic sentiments in the security industry can cause damage with targeted attacks. For instance, Welchia’s attacks on security solutions should be mentioned, and December’s 2005 discovered vulnerabilities in Symantec’s and McAfee’s products as well. Vendors tend to have vulnerabilities as well. However, I feel any vendor should really, really, try to reach the proactive level of high-severity vulnerability research, than merely responding (whether later or not is yet topic though) on security vulnerabilities. In many cases, independent security researchers provide patches or policies on how to block certain security threats posed by the lack of vendor released patch in a timely manner. Irony, but it keeps the balance around the Net in a certain way.
- Easily resetting its lifecycle by reintroduction of new exploits, or switching infection propagators – once enough “seed victims” are gathered, these easily act as a stepping stone for further infections. Furthermore, once a patch for a known vulnerability starts getting applied across networks, the malware authors simply “reset” their code’s lifecycle, by reintroducing it under new infection propagators, and exploits database. So for the time being, I feel malware authors have the privilege in this tactical warfare
- Competitive – rather ironical, but malware can, and is disinfecting against other malware. And given the competition for a larger share of the Internet’s infected population as I refer to zombies, malware authors are waging cyberwars among themselves. The infamous virii wars indicate that malware authors are facing challenges too, and while collaborating, they are also competing. So true for any market, isn’t it?
- Sneaky – namely, can propagate through content spoofing or web vulnerabilities, auto-executing through client-side attacks(browser, any other software), and requires less end user’s interaction resulting in a faster worm, and higher probability of infection
- The main platform for disseminating spam, phishing or any kind of e-junk – “Give me an email and I can move the Earth!” approaches easily turn into reality, and there’s been a clear indication of how spammers, phishers and malware authors work together. That’s just the beginning of these affiliations.
Further expanding the topic, the malware scene is overly mature, while on the other hand its “releases” usually tend to have extremely short lifecycles, and quickly become part of a family of variations. The ones with the longest lifecycles tend to dominate a higher proportion of the Internet’s infected population, and these very same pieces of malware are actually the ones written for gains, be it intellectual or financial ones. They also tend to reach levels of sophistication outpacing the rest, make an impact (always the news!) as well as test the vendors’ understanding and fast response to today’s, even tomorrow’s threats. Mind you, each and every malware is released with a specific purpose, namely it’s life-cycle is anticipated by the authors themselves, but hijacking botnets, or vulnerable infected hosts could extend perhaps, not only its life-cycle, but its ownership as well, and that’s already happening. What’s also to note is how fast malware changes tactics whenever an opportunity appears, so basically, even over a short period of time, all propagation vectors get used.
It is impressive how huge the Internet has grown, its diversity in terms of countries participating, their regulations, understanding, and actually responding to Internet related threats. The overall Internet monetization acted as the most clearly highlighted factor for the early malware-for-profit experiments we have witnessed during the last two years. Be it, email address harvesting, “direct marketing”, no wait, spam sending, phishing attacks, on demand services in respect to DDoS, segmented attacks targeting particular country’s businesses, or single company – it is happening right now, without the FUD! As a matter of fact, in this publication fear stands for “worst case scenario”, uncertainty for “risk”, and doubt with “uncontrollable external factors”. It’s also as “third-party research”, as possible :)) There’s been a lot of buzz on using RSS as an infection propagator, and that Microsoft’s integration of RSS into future IE versions, would further fuel the developments in this field. The speculation originally came from a white paper released by TrendMicro
. On the other hand, content spoofing or pharming are the first scenarios that come to my mind. If an attacker is able to inject anything into a popular RSS feed, due to a web application vulnerability on the service, then we really have a problem, and the live feed circulation meter should be considered as the infected hosts one in this case! What about an IE vulnerability that would further improve the “effectiveness” of the build-in RSS reader? I wouldn’t consider it to be the “next big thing” though. Can syndication also be considered as the biggest hit-list ever, one of the foundations for a Warhol worm
in this case? Every major dotcom darling has suffered a web application vulnerability, and with the percentage of Internet traffic they attract, these are constantly attacked on all fronts.
Another initiative that should also be mentioned, is the Common Malware Enumeration
whose aim is to minimize the confusion of malware cross reference names during public outbreaks. The guys from Av-test.org, have also taken the time and effort to compile a list of cross-reference malware names
, a clear indication of the need for such a project. But how useful is the idea actually? It has been recently criticized for not linking to anti virus vendor site’s technical descriptions of the related malware, an issue that they have already resolved.
During 2005 we have also witnessed a great deal of cases with preprogrammed malware coming over mp3 players
, or external hard drives
, and I consider it as a clear indication of the penetration of the Internet within important networks, as well as the interoperability effect these days. Malware could therefore easily reach everywhere, and any device.
Malware can also have national security implications, but discussions on these, you wouldn’t hear or read in news, that’s up to your sources of course. For instance, in June 2005, Japanese nuclear data was leaked
on the Internet through a virus on a personal computer. It exposed interiors, details of regular inspections of repair works, and names of workers. Yet another event that happened in December, 2005 was that of Japanese Airlines leakage of airport passcodes through malware infected PC
. Disturbing enough to comment, even if it’s not done on purposely!
Going back to 2004′s blackout in the U.S, a lot of folks highlighted that the event was right in between another Blaster cycle around the net. In fact, some researchers tried to summarize the potential of Blaster’s unconscious contribution to the blackout, overloading networks worldwide
. TrendMicro also managed to compile a list of victims posed by the Sasser event
back in 2004.
Cases of damages included the following:
- Public hospitals in Hong Kong
- One-third of Taiwan’s post office branches
- British Airways – 20 flights were delayed for 10 minutes
- Sydney train system
- Scandinavian banks
- British Coast Guard – 19 control centers were forced to use traditional pen and paper for their charting routines.
And given that’s just a small part of the big picture, malware can be considered as a truly evolving menace!
Where the metrics are!
No metrics’ quality should be taken for granted, but I have come across a great deal of similarities between vendor’s research reports and the actual situation. Even though the diversity of their sensor networks and geographical regions covered can be questioned, yet another trend should be considered. Be it, out of professional solidarity, or social concerns, today’s ever-lowering costs for building and maintaining honeyfarms infrastructure have resulted in hundreds of thousands of honeynets run by researchers or consultants. Their, often unique and timely discoveries are directly forwarded to all the major vendors for testing. This ongoing collaboration between anti virus vendors, independent researchers, and organizations, has helped spotting some of the most prolific threats the industry has seen, such as the Code Red worm for instance, a moment that sparkled further partnerships between anti virus vendors and vulnerability or intrusion detection ones.
Note : Symantec’s data is based on more than 24,000 sensors monitoring over 180 countries across the world. It also integrates data from their 120M client, gateway, and server solutions customers that use the company’s products, and the 2M decoy accounts spread across the world.
- In the first six months of 2005, on average there were identified 10, 352 bots per day
- During Jan-Jun 2005, the daily volume of phishing attacks was 5.70B messages
- Between Jan-Jun 2005 DdoS attacks grew by more than 680%, to 927 per day on average, compared to 119 per day during the first half of 2004
- Educational institutions and small businesses(end users included) was the most targeted by industry
The lack of P2P worms is, I think, a logical consequence of the RIAA’s busts around the U.S, and the global response towards P2P networks copyright infringement. The rest is pretty evident though.
Use and abuse of malware
DDOS extortion match other research findings. Malware and DoS attacks occupy the top 3 positions(2005′s version shows an increase in all crimes, but it is my opinion that extortion attempts do not even get reported!). Any web site could suffer a DdoS extortion attempt causing it direct revenue losses that’s hard dollars, and the lost stakeholders’ confidence in the business. Besides directly attacking business continuity and revenue streams, a lot of soft dollars, that is lost customers, partners, and overall stakeholders’ loss of confidence in the business is what would follow, and is hard to quantify thoroughly. DdoS extortion happens when the botmaster, or his slaves, contact your requesting cash for not taking down your site. The web server, network, or other dedicated server may or may not be yet attacked prior to contacting the owners, and that should be considered the polite approach.
The other directly performs successful DDOS attack to demonstrate capability, and than demands, a clear psychological attack, that should provoke impulse paying. There’s a clear indication of the obvious botmasters’ dominance and motivation, and organizations paying are fueling the growth of this practice. For instance, Authorize.net
got under DDoS out of an extortion attempt, and perhaps the most decent reading I ever came cross on the topic is a CSO’s article that’s a very realistic one
Cryptoviral extortion / Ransomware
The concept isn’t new as it was first seen with the appearance of The Disk Killer
virus in June, 1989. But its weakness of using a weak encryption algorithm made it easy to restore the data. In fact, that’s the current problem with this type of malware today, weak algorithms, and actual implementation. Though, my favorite is One_Half
, which as a matter of fact I got infected with back in 1994. It encrypts folders prior to accessing them, until it encrypts half of the disk space. A recent variant was spotted in 2004, that’s W32/GPcode
. It searches for specific file extensions, encrypts them and demands ransom. And given today’s crucial availability of information, the trend will continue growing.
A cryptoviral attack basically takes data as a hostage, encrypted with the author’s public key, naturally wiping out the unencrypted data, and demanding a ransom for it. Whether a retrovirus attack or a future trend, if well executed the possibilities and damage caused by such infections, would definitely test your security flexibility.
Adam Young’s in-depth research on cryptovirology
provides an great overview of the concept. It opens up a discussion on “kleptographic attacks”
ones that utilize subliminal channels to transmit things like: private signing keys, private decryption keys, symmetric keys, etc. outside of a cryptosystem (e.g., smartcard)”. Future attacks would be definitely better planned and executed compared to the current situation.
However, I doubt cryptoviruses would be launched on a mass scale, as it would raise too much noise, which is why I believe the actual metrics on that type of malware aren’t as extensive and they would be. It opens up yet another point to consider, and that is related to the momentum I’ve mentioned, would an organization pay the ransom if its last accessed files/folders for half of the work day are about to get deleted, not just held hostage? And what if they demonstrate it, since they got nothing to lose in this case?
Platform for disseminating other junk
The odds are, that a percentage of the global spam sent today is coming straight from your PC. Botnets are actively utilizing their connectivity to the Internet for spreading spam, phishing, worms, do hosts’ mapping, act as platform for spreading, or hijacking backdoored malware, that platform is functioning right there in front of us. An entry at the Incident Handler’s Diary
, for instance mentions that use of Brazillian defacers(the world champions) for hosting of phishing sites on defaced servers has been already happening, yet another indicator of the growing consolidation of different parties and a factor for growth.
The majority of these attacks, as well as malware in itself are getting increasingly localized, in both, their targets, and social engineering, even network vulnerabilities. Exploiting the momentum of local events, organization’s reputation, and total impersonation of an organization/individual is getting even more popular, because it’s successful. A recent, rather odd case related to localized malware, was when a person that happened to possess child-porn images, though he received an official police warning. That very same local police warning, was actually sent from a worm
Mass Identity theft and financial abuse
Keylogging, taking active screenshots of browser sessions (perhaps to better tailor future attacks), malware authors are also turning the usability of E-banking and its visibility, into easily categorized databases to keep an eye on. For instance, in may, 2005, the Trojan-PSW.Win32.Agent.aa
, was found to steal data from over 2764 bank sites
, from over 100 countries, that’s not just a hobbyist. According to Valerie McNeven, advisor on cybercrime to the
U.S Treasury, cybercrime yielded more revenues the drug trade’s $105 billion for first time in 2004
. Even though this could be doubtful given the hard to quantify soft and hard dollars of cybercrime, I’m sure it indeed surpasses drug trafficking in respect to popularity and potential for gains, illegal, of course. Moreover, Kaspersky’s TrojWare growth rates
, indicate a 115% increase in Banker trojans(stealing banking/financial information) in 2005 against 2004, yet another indicator it’s indeed a growing trend.
05. Factors contributing to the rise of malware
If I were to include them all, I would need another several weeks research. And quantity of the factors isn’t of importance, but highlighting the major ones. Have a point of view? Drop a line!
- Documentation transformed into source code
Extremely easy entry on the scene, given that what used to be howto’s and documentation on how to write worms turned into open source code that’s can the theoretically be discussed and commented on every web forum out there. Source code of malware can be easily found online, or requested offline in the form of a CD/DVD. The globalized Internet allows the hosting of questionable in other countries materials, while a great deal of people are still convinced that security could be improved out of having source code freely available. IDS and anti virus filtering experiments with source code, both original, and modified, have always been an option, and so are wannabe authors. For instance, Fanbot.f was developed using the source code of Mydoom and the SbBot variants, and even left the message inside the code
. Though, malware’s source code truly “wants to be free” these days.
- Vulnerabilities, even patches, easily turned into exploits
The current number of vulnerabilities reported, their severity and the use of security research tools for crafting exploits
, are shrinking the anyway huge window of opportunity posed by released vulnerabilities and working exploits. Given all this, the modulation and impact of malware on an enormous number of hosts worldwide, today’s malware is successfully evaluating the response of the Internet community towards dealing with 0day, or 1day vulnerabilities.
There’s been recently a lot of media reports on 0bay vulnerability market
, that I expressed an opinion on in one of my blog posts. Basically a malware could be constantly “loaded” with new modules, and besides exploiting witty social engineering vulnerabilities, authors prefer to exploit vulnerabilities mostly. There has always been and will always be a discussion on whether the release of vulnerability (no exploit included) improves security or damage it. The thing is when? Now, or in the near future, because today’s transparency and active discussions are still leaving the unaccountable by anyone vendors in a catch-up mode. And while they are fighting bugs on their solutions portfolio, the rest of the Internet in a “stay tuned” situation.
Software vendors release patches on a freewill basis in respect to time, given they are not legally obliged to do so, it’s a connected world and security is the trade-off, some will say. We can though, argue as the current model of malware attacks abusing the Net as a whole quite often puts vendors and their stakeholders in a “catch-up” mode. For instance :
- The time between the disclosure of the vulnerability and the release of an associated exploit was 6.0 days – The average patch-release time for the first 6 months was 54 days. This means that, on average, 48 days elapsed between the release of an exploit and the release of an associated patch. I must also add that according to IronPort, a security appliance vendor, not only does vulnerabilities act as a growth factor, but the collaborative approach of the anti virus industry left your business exposed to risks in the wild for 56 days this year. Also, consider going through Av-test’s statistics on the vendors’ responses.
- Clear signs of consolidation on the malware scene
One of the important events on the malware scene, that greatly changed, and made it much more dangerous, was the consolidation between different parties. The lack of misconfigured email servers acting as a platform for the dissemination of junk, made it necessary that malware authors start crawling around hard drives, successfully obtaining a huge number of fresh and valid email addresses. Web site defacers are offering the web servers for hosting of, both payload, and actual fake sites. And exactly the opposite. While thinking you’re at citibank.com, you might be actually surfing someone else’s hard drive, courtesy of a malware author. Each of these groups have advantageous approaches compared to the others, and uniting and exchanging updated information between one another is causing even more competitive fight with the criminals.
- Over 960M unique Internet users their connectivity, or purchasing power
To me, the penetration of the Internet in a Windows world, with millions of connected to the same highway hosts, actively taking advantage of E-commerce, is what lures malware authors to launch more attacks. What should also be noted, is that, it’s not just someone’s financial data, or non existent “top secret” information stored on their PC an attacker looks for these days. Instead, it’s the overall Internet connectivity of the host, it’s bandwidth, and even storage capacity, as illegal hosting on demand will emerge as a concept anytime now in my opinion.
It is not just the profit-maximization opportunity seekers that go through quarterly E-commerce data. Malware authors, and the rest of cybercriminals are also pretty aware of the growth of online advertising, and E-commerce as whole. Cybercrime as a concept is evolving, and cybercrimes are often a real-life criminal’s cash cows.
A recent case with a drug raid in Oregon shred more light on the fact that real-life criminals are actively taking advantage of various online exploitation techniques
. While the information can naturally be obtained through common identity theft tactics, such as dumpest diving, information gathering, impersonation, direct request, phishing, and stealing login information out of malware infected users for the purpose of illegal funding is a real possibility in the long-term.
- The media as a fueling factor for growth
Malware authors logically hate to get on the front page, it would ruin any temporary advantages against the vendors, and consequently the potential victims. Even though the media, as always, is actively reporting on each new variant, even speculating on what’s actually going on, haven’t been their core competency recently. I greatly feel, more attention should be paid to what matters in an anti virus solution, can a recent event directly affect me or my organization, and what to do about it, instead of emphasizing on malware names. Now, that’s hell of an appropriate moment to mention the possible misunderstandings posed by cross-reference malware names, some even make the news too
. Don’t get me wrong, it’s the media that has the capacity to communicate all your values.
- The demand for illegal services
There will always be such a demand, and that’s one of the core principles of economics, specialization, namely, a malware author doesn’t have the background necessary to efficiently harvest/crawl for fresh email addresses, this is where the spammer and phishers come into place bring in know-how. People do impulse things like shutting down their competition over the Internet given with the false sense of security concerning the guy hired. Spammers also constantly need fresh hosts to spread their “message”, and the same goes for phishers. For instance, cybercriminals forward responsibility(or do they actually?!) though renting access to the botnet, while I am certain the ease of developing and maintaining an electronic marketplace for pretty much anything illegal in this case, is a fully realistic scenario that the ShadowCrew actually realized for a little while.
06. Future malware trends
The nature of trends covered here is in no way intended to be complete, simply because you would often find the scenarios for the future either too big, or too narrow. I have anyway tried to compile my point of view in the following way :
- mobile malware will be successfully monetized
Generating buzz around mobile malware will again get rather common during 2006.
According to vendors, it has already reached the 100 variants barrier. We are seeing it everywhere due to the fact that the number of mobile devices outpaces the number of PCs in the world, yes, that’s true, and a bit of a common sense. I expect to see further research on mobile devices vulnerabilities, Symbian devices mostly, as this is where most top of the breed models come from. Fontal’s ability to kill the phone, makes it particularly devastating if successfully disseminated. around an event/country.
should also be mentioned as the evil side of Fontal in a certain way. It deletes pretty much everything, and password-protects the card with a random password, as soon as the device is restarted of placed in another card. Mobile malware has a lot of “potential”, and at the moment authors are just actively experimenting, lack of forensics as an incentive? On the other hand, MMS malware with a lot of social engineering involved, can also easily break the ice. I think timing is an important factor here. If users start receiving any kind of malware somehow related with the event they are current at, many will fell victims of course. We would on the other hand witness the inevitable monetization of mobile malware, such as the abuse of premium numbers, impersonation scams, ring tones and melodies revenue generators, voting/participation(sms) schemes and many others. As the world goes towards an increased use and interest in mobile banking, the GSM commerce that will emerge will again open up countless opportunities for malicious attacks to take advantage of. Would mobile phishing also emerge in that case?
Mobile malware will evolve, mainly because of the penetration of faster networks, and the levels of new features that come up on the market these days. Malware session keylogging, dissemination though the contact list, harvesting phone numbers are retro techniques that would inevitably reappear on this front, or at least authors will try to develop. Something else, to consider is the use of mobile malware as a propagation vector, in the form of a URL for instance, or successful social engineering approach, given enough numbers can and are collected. For instance, Commwarrior.C
immediately replies to incoming messages with an infected MMS that contains previous chats within, an improved effect of social engineering, and that’s just the beginning in my point of view. SPIM, that is mobile spam, has been around for a while, and with
Telecoms and Cellular providers building Internet gateways to further improve performance, I see a clear indication to worry about.
The number and penetration of mobile devices greatly outpaces that of the PCs. Malware authors are actively experimenting and of course, progressing with their research on mobile malware. The growing monetization of mobile devices, that is generating revenues out of users and their veto power on certain occasions, would result in more development in this area by malicious authors. SPIM
would also emerge with authors adapting their malware for gathering numbers. Mobile malware is also starting to carry malicious payload. Building awareness on the the issue, given the research already done by several vendors, would be a wise idea.
- Localization as a concept will attract the coders’ attention
By localization of malware, I mean social engineering attacks, use of spelling and grammar free native language catches, IP Geolocation, in both when it comes to future or current segmented attacks/reports on a national, or city level. We are already seeing localization of phishing and have been seeing it in spam for quite some time as well. The “best” phish attack to be achieved in that case would be, to timely respond on a nation-wide event/disaster in the most localized way as possible. If I were to also include intellectual property theft on such level, it would be too paranoid to mention, still relevant I think. Abusing the momentum and localizing the attack to target specific users only, would improve its authenticity. For instance, I’ve come across harvested emails for sale segmented not only on cities in the country involved, but on specific industries as well, that could prove invaluable to a malicious attack, given today’s growth in more targeted attacks, compared to mass ones.
The ability to tell more about the total number of infected hosts, in respect to their geographical location for future attacks, would continue to attract the author’s attention. Picture an author that’s aware of the exact locations of all the infected victims, and that their native languages. And these and various other system stats are spread among the other cyber criminals, in the ecosystem I see as a natural evolution. Localization would easily result in far more effective attacks, compared to the current mass mailings.
- Open Source malware
Have we reached the level where malware would be freely modifiable for anyone wanting to extend its functionality? I’m afraid it’s already happening, and we can truly define it as open source malware, as people are actively modifying it, adding more features. Agobot/Sdbot and many other are released under the GPL license, and anti virus vendors are already counting thousands of variants produced under the same code.
Distributing the source code contributes to the increased anonymity of the real authors and the diversifying of the attention already gained over a particular variant. You’d better have you fans in the news, without even having to bother they’ll ever compete with you on know-how, instead of getting all the attention at your malware. Making the source code public is a bit of a dirty, yet visionary trick from malware author’s point of view, it brings many more newbies to be caught on the radar, instead of the experiences ones. The noise generated by the script kiddies and wannabe media heroes, creates a great environment for the real authors, to keep playing behind the curtains, and theoretically, to hijack the most successful variants based on their very own code. Another very significant benefit of open source malware is how easily new features and concepts get added, thus benefiting the malware scene as a whole, and requiring more competitive play from the vendors.
Open source malware is a real issue that’s currently resulting in hundreds of copycats out there easily launching a bot on their own. And whether successful or not, this fact is responsible for the flood of variants of known families. That is, of course until an easily exploitable remote vulnerability appears, which happens rather often these days by the way.
- Anonymous and illegal hosting of (copyrighted) materials
Today’s advances in transferring huge files across the Internet with the help of BitTorrent, get easily implemented in malware. And even though we are witnessing the decline of malware using P2P as a propagation vector, we would start witnessing the use of infected zombies for unauthorized hosting of any kind of content.
In the brief “future trends”, that I included in The Complete Windows Trojans paper, I slightly opened up the question of illegal hosting service, so I was greatly surprised the idea hasn’t been more popular, until recently of course.
We should see even more “utilization” of an infected host, and the way we are seeing how botnet master’s verify the bandwidth availability of all PCs, that way they will easily start verifying the storage capacity, and get impressed for sure. Picture a huge distributed storage capability, where the loss of a single host, wouldn’t affect the actual dissemination of the files in question, neither it would influence the rise of bandwidth usage. BitTorrent disrupted the concept of transferring huge files over the Net. As we’ve already witnessed during December, 2005, a relatively modest, still powerful enough botnet of 18, 000 computers
started using BitTorrent to transfer pirated files over the hosts. Certain users will definitely wake up as true porn kings :))
The overall demand for illegal service that I already stated as one of the main factors fueling the growth of malware, would result in the abuse of an infected host’s storage capacity. Given today’s P2P concepts, and the disruptive BitTorrent technology, it is not longer required to on purposely slow down transfers to hide the activity on a user’s host. Connections have evolved, and so have technologies, and taking even a broader note, I could argue a host’s bandwidth speed, and storage capacity could be easily bargained on when renting botnets, or the service in itself.
- The development of an Ecosystem
Google, AOL, and Yahoo!’s affiliations can be clearly defined as an ecosystem. Google’s search technology achieves explicit velocity, and it’s advertising program’s quality generates revenues using AOL’s and Yahoo! massive audiences — everyone’s happy! A huge percentage of both, Google, AOL, and Yahoo!’s revenues are fairly distributed among them, simply because they wouldn’t be able to survive on their own, or at least miss hell a lot of profitable opportunities.
The higher the pressure put on malware authors and other parties, the higher the chance of the development of such an ecosystem among them. Whenever a natural disaster happens, let’s say in China, a phisher would seek localized email addresses, ones provided by both malware authors, and spammers. That very same ecosystem I’m talking about, would also bring sellers and buyers of “services” together. Imagine a database that keeps track of important variables such as IP, Browser version, host’s OS, geolocates it, and passes it to everyone, or even worse zombies stats for rent. Taking into consideration reconnaissance and OS fingerprinting for compiling hit-lists, and we have a problem.
Now imagine a malware, such as Bagle, or any other implementing spamtool modules to harvest the victim’s hard drive for email. In our case, one that goes through the most recent emails received, strips out the sender’s IP addresses, and both confirms it as an active one, prior to including the client’s version, and it’s geolocation. Today’s witty malware of spotting non existent domains on the hard drive, left on purposely through “poisoning” techniques, will inevitable evolve in its understandings of the opportunities.
The true benchmark for serious commitment, perhaps investment in the malware scene in my opinion would be the development, and eventual discovery of such an ecosystem, the way ShadowCrew’s electronic marketplace was tracked and shut down. In would emerge not only because the environment would become even more competitive for authors, but also because of the clear gains for all the parties, given they realize them. From another point of view, centralization is always a weakness, but that can also be questionable.
- Rise in encryption and use of packers
As far as packed malware is concerned, it would continue to gain even more popularity by malware authors looking for ways to make it harder to analyze their code. Looking at Kaspersky’s metrics on packed malware, we see, a modest, but increasing trend in this field. And besides thinking that encryption is a logical development, today’s huge number of commercial packers that are available get often purchased, or pirated copies are obtained.
||Increase in packed malware relative to other malware
The use of the Hacker Defender
, its Golden Hacker Defender edition, as the most popular ones, or any other packer to make it harder for a vendor to analyze the code, is allowing it to win necessary time to infect the seed victims that would improve the chances for success of the malware. We would definitely witness more development in this field any time now.
Winning time gives authors a crucial temporary advantage to infecting seed victims, making it hard to thoroughly analyze code and purchasing commercial tools or obtaining illegal copies of them, should be considered as a common practice. The interesting part is how developers of rootkits are adding protection against rookit detectors, and exactly the opposite, as pointed out in a post at F-secure’s Blog.
- 0day malware on demand
We have already seen this, and we will continue seeing it ever more. A web site that I regularly used to peek at(now down, cjb.net domain though so it’s up somewhere else!) was offering specially crafted, and of course undetected by antivirus vendors malware coding services, rootkit capabilities included. For instance, “The Symantec DeepSight Threat analyst team
has uncovered evidence indicating that bot networks that can be used for malicious purposes are available for hire. In July 2005, in an Internet relay chat (IRC) discussion that the DeepSight team was monitoring, a self-proclaimed bot network owner revealed the size, capacity, and price of a bot network that he was making available. Customized bot binary code was also available for between U.S.$200 and U.S.$300
Having open source malware means knowing how to add modularity, make it truly undetectable, and perhaps even having build-in special features, seen nowhere else. Malware like this, if its well programmed, could bypass the majority of anti virus solutions, and in case any other perimeter based risk management solutions aren’t in place, it would really do a lot of damage. What’s also important to note, is the growing communication between such “sellers” and “buyers” would further make entries on the malware scene much easier, than they are right now!
The number of people capable of coding malware is growing(or copy and pasting!), and it’s up to their social and moral obligations not to start offering their services to the great number of people looking for them. So treat your coders with respect, please
- cryptoviral extortions will emerge
That’s a bit of a creative in a nasty sense of humor type of malware, no regrets, no demands, the art of malware is battlefield
After ensuring what’s most precious to an organization or individual is made useless by encryption, the desperate victim is the one having to initiate the contact and comply with the extortion. If you even got infected with a malware, lost something in one way or another, and had the chance to contact the author, what would be the first thing to say?? In this case, you will have to negotiate in one way or another and cut the physical damage part :)) Making sure the infected data hasn’t actually leaked out of the organization, but is only remaining encrypted on its network, is a good sign. But in the future, authors will find ways to adapt, would another market for trade secrets emerge, that’s a scary thought! Such kinds of attacks should be well researched as they will soon start appearing one way or another.
Directly attacking the availability of information and successfully establishing a backend communication(infected victim contacts the malware author) is a witty approach malware authors are starting to use. The encryption algorithm, and its actual implementation are currently its weakest points, as well as given no data leaked out of the organization. And of course, clean, and very recent backups.
- When the security solution ends up the security problem itself?
Another fact worth mentioning that I haven’t seen active discussions on, is what happens when the security solution turns into the security problem in itself? Naturally, having the solution would definitely limit the more serious security problem that would result without it, but what should also be considered is the possibility of worms directly exploiting a vulnerability in the solution. We have already seen this with the Welchia worm, 1 day from vulnerability to worm, successfully attacked the majority of ISS’s customers, that’s as a matter of fact a huge number of the Fortune 500 companies. No way to respond to a threat like this given the timeframe, so imagine what could have happened if the payload caused both, hard and soft dollars losses. I should also mention Sony BMG’s DRM solution that ended up first as a security threat in itself, and than as propagation vector for malware authors, though it is my opinion that the greatest benefit is the awareness that it built on rootkit technologies. An interesting fact was also pointed out by Mike Rash at SecurityFocus.com is that it could also mean you are doing a violation of the DMCI act for trying to get rid of Sony’s DRM protection, now that’s just “great
On the other hand given that some of MyDoom’s versions block over 250 firewalls, as well as infected hosts from updating themselves, malware authors are clearly interested in attacking the vendors themselves. Both, directly and indirectly. Another frontline, perhaps a little bit of unpopular one is that of the vendors’ or anyone providing security policies or updates and the transparency of their update locations/mechanisms. If we were to go through the known vulnerabilities of known antivirus vendors, we should also go deeper and find out their response time. Plenty of timeframes to abuse. In the future, either through 0day vulnerabilities markets(like the ones already emerging), or through extra efforts, malware authors will pay more attention to attacking the antivirus solution directly.
Another point to consider is that malware authors often think “the best defense as the attack”, that also sounds like “hack or be hacked”, but it’s a weak practice namely, defined by some as retrovirus techniques, future malware will greatly emphasize on directly attacking anti-virus solutions, 0-day vulnerabilities abuse, killing the application, or blocking its most precious signatures update feature. Quite some malware, first disables the solutions, than downloads its payload with ease. I can argue that, the majority of malware authors update their signatures more often than the majority of end users and organizations tend to. Currently companies aren’t paying serious attention to tackling this major threat to their effectiveness. The now out-of-development Trojan Defense Suite (TDS) was pretty aware of how fast authors would start targeting its functioning, that is why a randomly chosen process window, lack of default installation directories and other techniques were in place to safeguard against possible interference. I haven’t recently come across great research on the topic, though SnakeByte’s list
that I first featured in the Complete Windows Trojans paper, should be taken as an example. As a matter of fact, you can freely find, executables, process names etc. of products blocked/killed by malware that’s already detected. Information that is too convenient to be available in such a way on any vendor’s web site in my opinion.
Is it just me or I haven’t seen a proactive vulnerability release by a vendor recently? Should vendors be held liable for Quality Assurance in respect to security, or is it the coders? The point for companies is to achieve security flexibility, and a great deal of appliance vendors already offer multiple anti virus solutions integration for the purpose. Moreover, policy based protecting, for instance, December’s vulnerability in Symantec’s over 40 products, could be tackled by blocking the use of RAR archives scanning at all. Security is taken care of, but what about productivity if N % of the organization’s workforce have to adapt with the measure in the very last moment? What about the somehow inevitable lost of productivity due to security solutions, that although deals with risk of a real security event, is under great pressure to constantly improve performance of its solutions? “The wild”, has gone even wilder these days, and you no longer need access to a commercial alerting service to know that. You could just plug yourself in, and see what’s actually going on. HTTP scanning, host based scanning, on-the-fly scanning, hourly updates, is a load that vendors are greatly working on improving. I am not being a pessimist here, as in a “perfect world”, productivity and world R&D spending will triple due to safer networks, malware-free :))
- intellectual property theft worms
The success of ransomware/cryptoviral extortion, is a clear indication of the authors’ intentions to take more advantage of the intellectual property stolen on an infected host. Myfip
is that type of IP theft worm. It attempts to steal files with the following extensions :
.pdf – Adobe Portable Document Format
.doc – Microsoft Word Document
.dwg – AutoCAD drawing
.sch – CirCAD schmatic
.pcb – CirCAD circuit board layout
.dwt – AutoCAD template
.dwf – AutoCAD drawing
.max – ORCAD layout
.mbd – Microsoft Database
We’ve seen malware that attempts to steal PGP private keys, but we haven’t heard of it successfully attacking an enterprise, or anyone else taking advantage of PKI for instance(everyone!). Should we also consider cd keys of software or games we’ve purchased as an intellectual property? We should, and these would start getting abused even more than they are now. Picture a highly segmented attack(country as the choice) with the idea to steal as much intellectual property as possible from a certain industry. Another fully realistic scenario would be the use of malware for industrial espionage, in this case, infecting a company’s network and transferring it back to the attacker. Covert channels
implementation would emerge as well. As a matter of fact we’ve always seen this in the Israeli trojan espionage case. I made a comment in June, 2005
What’s the easiest way to “catch up” or match your competitors propositions and even exceed them? No, it’s not called competitive advantage or business intelligence, but taking advantage of remote access control tools to do industrial espionage. Even though major organizations are, at least believed, to be taking care of malware, the story clearly points out the devastating effects of what happens when you don’t take your rivals into consideration. The Trojan, self-coded might somehow get ignored by the anti-virus scanners in place, but what’s to note is a technique using the autostart feature of CD that I described in The Complete Windows Trojans Paper back in 2003 and thought it was outdated or at least enough awareness was build on its possible abusive use. Hopefully the case will raise even more awareness on the fact that private investigation companies are actively using Trojans to spy on individuals, and that companies striving to innovate or catch up are actually interested in these services, Ethics, E what?!
Would enterprise risk management solutions such as Vontu, Reconnex, or any other capture this data, what if it’s tunneled, encrypted, and than disseminated through BitTorrent, a functionality that is already gaining grounds? Would malware authors find a way to adapt in here as well? In case, we extend the scenario even more, the way recently received emails get replied by a worm, and recently accessed files under extensions of interest, could further take advantage of the timeframe capability and lead to the success of intellectual property worms. I believe, that events like these are currently happening, and as always, it takes a little while for an organization to find out that it’s been infected. Some never even find that information has leaked, until the media watchdogs pick up the story. That being said, it is important to highlight the way different organizations value security incidents. The majority, would for instance count the direct loss of productivity in hourly rate, and the incident recovery costs of the malware infection only. Quantifying intellectual property is still an academic concept, even though scientifically justified concepts and a little bit of marginal thinking, (they aren’t 100% accurate of course), can do the job! It would also be wise to say that intellectual property is the only type of asset that can be at two different places at the same time!
Given the vast majority of sensitive, and ready to be abused by competitors, blackmailers, or hackers, intellectual property worms will emerge during the next couple of years. They would greatly benefit of the current malware trend of more targeted and less global attacks, acting as a 0day threat to corporate enterprises, a threat posed by cyber criminals, competitors, spies, or blackmailers. What that type of malware would have to bypass would be the enterprise wide risk management solutions such as Vontu, ReconneX, Vericept and Tablus, ensuring secret or sensitive information doesn’t leak out through the network. In the upcoming future a great deal of efforts will be placed in finding ways to locate and leak intellectual property over the Net.
- Web vulnerabilities, and web worms – diversity and explicit velocity
Managing to unveil a vulnerability and actual exploit for an Internet community, of web forum, you could easily trick these people into thinking they are connecting to the right host, but get redirected, or have their PCs automatically breached into. Malware authors or pretty much anyone with a little knowledge could easily obtain.
Thus, exploiting the trust established between the victim and the host in question. How would a malware author be able to harness the power of the trust established between, let’s say, ComScore’s top 10 sites and their visitors? Content spoofing is the where the danger comes from in my opinion, and obvious web application vulnerabilities, or any bugs whose malicious payload could be exposed to their audiences. In case you reckon, a nasty content spoofing on Yahoo!’s portal resulted in the following possibility for driving millions of people at a certain URL, if I don’t trust what I see on Yahoo.com or Google.com, why bother using the Net at all is a common mass attitude of course. Anyone with a web site full of web vulnerabilities could act as the intermediary in a malicious activity, both inside and outside the site or it’s service in particular. If anyone can provide the biggest, relatively recent snapshot of the known Web, that’s the most relevant search engine in the world, Google. What I am trying to imply is the possibility of creating and maintaining huge hit-lists with relatively simple search techniques, an automation, with the use of “slow” worms, whose activities would usually go beyond the radar.
Any web property attracting a relatively large number of visitors should be considered as a propagation vector, for both, malware authors, and others such as phishers, or botnet brokers for instance. The ease of exploiting web vulnerabilities, increases the probability of such an attack tremendously, so adequate audits for vulns should be regularly considered. Robert from CGISecurity.com once gave a prediction on the possibilities of web worms as well.
- Hijacking botnets and malware infected computers
No code is perfect, even the malicious one! In case you reckon, W32/Doomjuice, W32/Bagle, and W32/Welchia attacked MyDoom compromised systems by abusing its weak update mechanism. Certain worms go in the wild based on vulnerabilities in other worms, so even in case full access to the botnet cannot be gained, another author could still abuse them. Theoretically, hijacking botnets is truly sound in my opinion.
The growing competition on the malware scene would result in far more unethical events, such as competing authors the virus wars, were an example of this growing trend. In consequence, future authors would look to piggyback on existing malware, by exploiting vulnerabilities in the known to dominate the Internet variants. Directly hijacking it though sniffing, flexibly techniques to acquire the botmaster rights, to both, further conduct illegal activities, or simply shut it down would represent a growing trend in the upcoming future from my point of view.
- Interoperability will increase the diversity and reach of the malware scene
By interoperability I refer to namely, standardizing communication and data interfaces to further ease the communication between different devices. Think Symbian for instance. Yet another point to consider is the extend to which we are actually building networks of intercommunicating devices in our houses, even offices!
This trend called technology, and market forces, would result in a far more adaptive breed of malware this time infecting technologies and services we surround ourselves with, and not stay in front of them(PCs). For instance, during 2005, F-Secure trashed a PSP
, and a Nintendo devices with code that renders them useless just to show a demonstration. Even though many would argue these attacks are not poised for success in “the wild”, these experiments will quickly evolve the way we’ve see it with any type of malware. Cars, gaming boxes, fridges even TiVos will definitely get connection, given they all do, or would, poses the necessary connectivity.
While the majority of manufacturers and vendors are limiting the use of proprietary OSs for their devices, thus achieving higher penetration and adding more value to their offerings. This huge boost having huge impact on the society and businesses as a whole, isn’t left unnoticed by malware authors, and the more lucrative the reach or severity of the attack, the higher the research efforts. My point is that, the benefits and disadvantages of standardization, as well as common data and communication protocols, will increase the diversity of the malware scene even more. Hopefully, vendors will be ahead of the threats as they appear.
Key summary points
- Malware authors update their multi-vendor anti virus signatures faster than most end users and enterprises do altogether
- The high pressure put on malware authors by the experienced vendors is causing them to unite efforts and assets, and realize that it’s hard to compete on their own. Yet this doesn’t stop them from waging a war in between
- Intellectual property theft worms have to potential to dominate in today’s knowledge-driven society acting as tools for espionage
- Don’t matter what you always wanted to do to ecriminals, in case of a cryptoviral extortion, you’ll be the one having to initiate the contact
- The growing Internet population, E-commerce flow, and the demand for illegal/unethical services, would fuel the development of an Ecosystem, for anything, but legal
- The “Web as a platform” is a powerful medium for malware attackers understanding the new Web
- The unprecedented growth of E-commerce would always remain the main incentive for illegal activities
I hope that the points I have raised in this research, would prove valuable to both end users, businesses and anti-virus vendors. The Internet as a growing force shaping our ways of thinking and living is as useful, as easy to exploit as well. The clear growth in E-commerce, today’s open-source nature of malware, the growing penetration of the Internet in respect to insecure connected PCs, are among the main driving factors of the scene. Do your homework and stay ahead of the threats, most of all, less branding when making security decisions, but high preferences! Please, feel free to direct your opinions, remarks, or any feedback to me, at dancho.danchev AT hush.com or at ddanchev.blogspot.com
where you can directly comment on my publication. Nothing is impossible, the impossible just takes a little while!