Malicious programs hit new high
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The numbers of malicious programs circulating online is reaching 'epidemic' levels, say experts.
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User-generated Web content is becoming a target for hackers and cross-site scripting attacks on Web sites can lead to malware taking over the browsers of machines that use the sites.
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A new malware strategy that involves tracking IP addresses to see when a machine has already been infected could prove vexing for those attempting to hunt down malicious code, according to Finjan. The new tactic is already turning up on compromised Web pages.
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The total number of virus attacks are down, but malicious codemeisters are getting faster, more sophisticated, and they&#39;re beginning to target e-commerce concerns and small businesses.
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A few weeks ago Candace Locklear&#39;s  office computer quietly started sending out dozens of instant  messages with photos attached that were infected with malicious  software.
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A new family of worms which uses an unpatched vulnerability in Internet Explorer is spreading widely across the net.
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Unpatched Windows systems face more security dangers after it has been discovered that new exploits are possible via malicious Web pages and e-mail messages.
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Symantec report says Internet attacks for financial gain on the rise.
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During a weeklong period in mid-November, security experts with Symantec observed roughly 65,000 new applications being downloaded onto the computers of customers participating in a new research project -- based on their analysis of the software, as many as 60 percent of the programs were malicious.The involved timeframe represented a relative high point for the percentage of unknown applications being downloaded by Symantec's project participants, and the basis for the company's assessment of the programs as malicious was predicated largely on the programs' use of obfuscated naming conventions.However, the numbers point to a disturbing trend that the researchers say may force the security company to change its fundamental approach for warding off threats -- that being that the number of malicious applications coming to life on the Web appears to be outpacing the volume of legitimate programs.With malware authors using fuzzing tools to find holes in popular applications such as Web browsers, and testing their work against commercial anti-virus (AV) products to ensure that the attacks evade detection by the tools, leading researchers at Symantec admit that defending against threats using traditional methods has become something of a losing battle."The reality is that most new malware is going undetected by commercial security products, and not just Symantec's, but we have to recognize that like all other AV products we are probably missing a sizeable amount of this malware," said Carey Nachenberg, a member of the company's Security Response team who also wears the title of Symantec Fellow."Eventually we write [virus] signatures and get those out to customers, but it appears that a sizeable proportion of this malware never gets detected," he said. "Instead of distributing one copy of each malware program to thousands of people, they're producing a copy for as few as two or three people and then re-writing it; so, if we get one version we can remove it from a few computers, but not all the variants. The problem with this is that there is the potential over time for almost everyone to have some form of infestation, maybe in only a few years time."The trend toward malware authors using small runs of attacks to evade detection and hook as many victims as possible, known as server-side polymorphism, is forcing Symantec to reassess how it goes about protecting its users.Since it can't hope to keep up with every flavor of threat that is being created, traditional countermeasures such as the use of malware signatures or behavioral heuristics will need to be augmented with new tactics, Nachenberg said.One such alternative is the use of the same distributed data collection capabilities that Symantec is using to track the proliferation of malware. By creating a system of file and Web site reputation by studying applications usage patterns among its customers, the researcher said, Symantec hopes to use a community approach to help people determine which programs they decide to use, or avoid.Much as many people turn to the reviews section on Amazon.com or the buyer feedback system on eBay to get a real-world take on products before they decide to buy, Nachenberg contends that by watching how people are using various applications the security vendor can use a process of elimination for weeding out malware from legitimate software.If only a few people among the millions of Symantec customers who could contribute usage data to such a program were utilizing some application in question, it would be prudent to recommend that people avoid the program until its nature has been better determined, he said.Using opt-out tools that provide anonymous feedback on applications that were built into Symantec's existing Norton AntiVirus and Internet Security 2008 products, the company is already gathering the type of data necessary to create such a system of recommendation."Right now this is just a long-term research project, but we hope that as we get more users involved in the system, we can truly get a better idea of what is on people's computers so that we can identify malicious software based on the demographics of who is using it, versus what it does," Nachenberg said. "We're hoping to get more clarity through the large base of users we have; by collecting this data we should be able to get the most comprehensive view of the usage patterns to derive reputation information for everything they use."Faced with questions over potential privacy issues driven by Symantec's ability to watch just who is using what applications and how, the researcher reiterated that users must be made aware of the data collection, allowed to opt-out, and guaranteed that all the information aggregation is done in an anonymous fashion.By offering users the ability to decide whether or not to use an application based on demographics, versus simply blocking programs based on its own observations, the company will also give people more freedom to determine what tools they feel are appropriate to use, he said."If we know that only five people are using a program, given the tens of millions of users we ultimately hope to have in the system, we can be totally objective and recommend that people wait until it is scrutinized further before using it," the researcher said. "We will need to have some manual process for white-listing programs as well, but we think that using this approach we can deliver a reasonable amount of quality with a low false positive rate."If the volume of new malware strains arriving on the Web continues to outpace the proliferation of legitimate programs, Nachenberg said that AV vendors including Symantec may need to move to a white-listing approach in general, and focus more attention on identifying good applications instead of trying to chase down all the bad."If there is less software to analyze that is good, it makes more sense to spend our time scanning for good programs and simply telling our users to avoid everything else," he said. "We're considering models where we can produce the world's largest up-to-date white list of software, but it's not something we can put together in a year; maybe in two-to-three years time."
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For the past few years, viruses have attacked Microsoft&#39;s operating system, Web browser or e-mail programs seemingly on a weekly basis.
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Latest worm poses a risk to many Web sites using the PHP scripting language.
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(InfoWorld) - They just don't make malware like they used to. Or at least like they did earlier this year. Even low-quality malware, however, is taxing the resources of security companies, since it is being detected in ever-higher numbers. Over the last six months, the technical creativity of malware has fallen along with the ability to cause massive damage, such as that created by the MyDoom and Sasser worms of years past, wrote Alexander Gostev, senior virus analyst for Kaspersky Lab, in a recent report. Gostev's lab intermittently sees highly technical malware, but most is "the same unending stream of Trojans, viruses and worms," he wrote. In many cases, hackers simply take existing malware and create variants, by tweaking the older code to evade antivirus software. At times, the process is simple trial and error. Malware writers use online scanners such as Virustotal , which check to see if their new code will be detected by antivirus software, said Mikko Hypponen, chief research officer for F-Secure. If the code is detectable, they can make a slight modification and run it through the scanner again. "I'd like to tell you that we're winning this war," Hypponen said. "But frankly, I'm not so sure. We need new kinds of solutions." Because much of the code is not new, it tends to remain effective for shorter periods of time before antivirus companies detect it. Still, the time it takes to identify and create a signature for a new virus, which can range from a few minutes to a few hours, is often long enough for hackers to infect computers. "Antivirus companies are working at the limits of their capabilities in terms of speed," Gostev wrote. To be sure, some malicious hackers are doing creative work. This year saw some sophisticated phishing attacks, and virus writers have been branching into relatively new areas like instant messaging and social networking sites, noted Christopher Boyd, security research manager for FaceTime Communications. But the trend overall, he said, has been "quantity over quality." Kaspersky Lab in Moscow is on the front lines of the battle. Its analysts added 2,000 signatures to their database in January 2005. Last month they added 10,000 signatures -- a five-fold increase, said Stanislav Shevchenko, head of the lab. The virus analysts work 12-hours shifts, pulling up screen after screen of rolling lines of code. Automated tools analyze some pieces of malware, but human analysis is still needed for others. A good analyst should process an average piece of malware within 5 minutes, Shevchenko said. But some of the rarer, more creative code is harder to crack. Polymorphic viruses -- ones that can change their byte sequences to throw off antivirus software -- can take up to a week to analyze, Shevchenko said. The signatures are added to a database used by Kaspersky's antivirus engine, which is licensed by other security vendors such as Juniper Networks, ClearSwift , and F-Secure. The increase in the volume of malicious code can be attributed in part to the impunity enjoyed by malware writers, said Eugene Kaspersky, head of antivirus research. Despite efforts by law enforcement agencies to strengthen international cooperation, most malware writers are never punished. "It's quite safe for them," Kaspersky said. "If they are clever enough, there is almost no risk for them at the moment." The U.S. Federal Bureau of Investigation and Russia's Federal Security Service (FSB), the successor to the country's KGB intelligence agency, frequently ask Kaspersky Lab for information, said Kaspersky spokesman Timur Tsoriev. The FSB, however, approaches Kaspersky less these days since the agency has bolstered its in-house expertise, Kaspersky said. Kaspersky said his lab focuses less on finding the root of criminal activity than protecting the company's customers. But the burden of rising online criminal activity directly impacts security companies, he said. "If there is no help from the police and if they don't reduce the number of criminals, I'm afraid the detection for all antivirus products will go down," Kaspersky said.
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New security software supplements antivirus protection by scanning systems for 'bot' malware that can take over unprotected PCs.
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Security experts are finding an increasing number of Web sites hosting malicious JavaScript code first detected on Super Bowl-related sites.
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Computer security experts estimate that tens of millions of personal computers are infected with malicious software. Some are keyloggers, recording every key stroke that the user enters -- sending valuable bank account information, passwords and credit card numbers to hackers.
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Program isn't entirely benevolent: it also downloads files to infected PCs.
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Malware that can hijack systems running Sun Solaris 10's Telnet daemon is circulating in the wild, security companies confirmed today.