Application “whitelisting” offers an alternative to signature based malware protection. Rather than trying to spot the bad guys, the thinking goes, just identify a list of approved (whitelisted) applications, then block everything else. But what happens when the whitelist, itself, becomes compromised? That’s the scenario that’s playing out with customers of whitelisting firm Bit9, which acknowledged a breach of its corporate network that allowed unknown assailants to gain control of an application code signing server. The acknowledgement came after Bit9 was contacted regarding the breach by Brian Krebs of Krebsonsecurity.com, which broke the news Friday. Little is known about the incident. In a blog post, Bit9’s CEO, Patrick Morley, said that only three of the company’ s customers were affected. Those customers identified malware on their networks that had been signed by one of Bit9’s code signing servers. The lapse was the result of a breach on Bit9’s own network. […]
Malware
Wealthy Countries Better At Protecting Citizens…From Malware
To paraphrase a quote attributed to the great American novelist F. Scott Fitzgerald: ‘Rich countries aren’t like you and me. They have less malware.’ That’s the conclusion of a special Security Intelligence Report released by Microsoft on Wednesday, which found that the rate of malware infections was relatively lower in countries that were wealthy than those with lower gross income per capita. The study, “Linking Cybersecurity Policy and Performance” investigated the links between rates of computer infections and a range of national characteristics including the relative wealth of a nation, observance of the rule of law and the rate of software piracy. The conclusion: wealthier nations, especially in Europe, do a better job preventing malware infections than poorer and developing nations. The report marks an effort by Microsoft to dig into some of the underlying causes of cyber insecurity globally. Using data gathered from its Malicious Software Removal Tool (MSRT) […]
New Malware Takes ‘Extended Naps’ To Avoid Detection
It’s a truism that even the bleakest circumstances look a bit brighter after a good nap. Well, that wisdom isn’t lost on malware authors either. A newly discovered Trojan Horse program, dubbed Trojan Nap, is programmed to use extended sleep cycles to fool behavior based anti-malware tools, according to a report from the firm FireEye. In a blog post Tuesday, researchers Abhishek Singh and Ali Islam said the new malware has a function, dubbed SleepEx() that can be used to configure long “naps” that the malware takes after it is installed on a compromised system. The default value, 600,000 milliseconds – or 10 minutes – seems designed to fool automated analysis systems that are programmed to capture a sample of behavior for a set time frame. “By executing a sleep call with a long timeout, Nap can prevent an automated analysis system from capturing its malicious behavior,” FireEye said. Like other […]
New York Times Hack Puts Antivirus on Defensive
The big news this morning is the New York Times’ scoop on…well…itself. According to a report in today’s paper, the Times’s computer network was compromised for more than four months by attackers believed to be located in China. The attacks followed a Times exposé on the wealth accumulated by family members of China’s prime minister, Wen Jiabao – one of a series of reports in Western media outlets that raised questions about corruption and influence peddling in China’s ruling Communist Party. Attackers planted 45 pieces of information-stealing malware on Times systems, despite the presence of antivirus software from Symantec Corp. protecting those systems before, during and after the hack. The story is fueling debate about the value of anti-virus software and prompted Symantec to issue a statement defending its technology, but warning that signature-based antivirus is not enough to stop sophisticated attacks. According to the Times report, the attacks used compromised systems on […]
Are Cyber Criminals Using Plus-Sized Malware To Fool AV?
Obesity is an epidemic in the United States. And it looks as if it may soon be a problem in malware circles, as well. After years watching malware authors pack their poison into smaller and smaller packages, one forum frequented by those seeking help with virus infections says that they’re seeing just the opposite: simple malware wrapped within obscenely large executables – in one case, over 200 megabytes. A post on the French-language web site Malekal.com on Thursday described what may be a nascent trend towards ‘plus size’ malware executables. In at least two cases in recent days, the forum has seen evidence of Trojan Dropper programs that deposit very large files – between 16 megabytes and 200 megabytes – on infected systems. In one case, the author discovered an exploit kit that deposited a very large file – around 16 megabytes- on infected systems. In a separate incident, he […]
