New 64-bit Linux Rootkit Doing iFrame Injections

A few days ago, an interesting piece of Linux malware came up on the Full Disclosure mailing-list. It’s an outstanding sample, not only because it targets 64-bit Linux platforms and uses advanced techniques to hide itself, but primarily because of the unusual functionality of infecting the websites hosted on attacked HTTP server – and therefore working as a part of drive-by download scenario.

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OS X Mass Exploitation – Why Now?

Market share! It’s an easy answer, but not the only one. In 2011, Apple was estimated to account for over 5% of worldwide desktop/laptop market share. This barrier was a significant one to break – Linux maintains under 2% market share and Google ChromeOS even less. This 15 year peak coincided with the first exploration by the aggressive FakeAv/Rogueware market targeting Apple computers, which we discovered and posted in April 2012 and later in May 2011, which no longer seem to be such an odd coincidence. Also, the delay in Apple malware until now most likely was not because Apple exploits were unavailable, or because the Mac OS X system is especially hardened. Read Full Article

Java Malware Reconsidered, or, Java Brews a Fresh Bot of Malware

At Virus Bulletin 2011, we presented on the exploding level of delivered Java exploits this year with “Firing the roast – Java is heating up again”. We examined CVE-2010-0840 exploitation in detail, along with variants of its most common implementation on the web and some tools and tips for analysis. Microsoft’s security team presented findings for 2011 that mirrored ours in relation to Java exploit prevalence on the web – it is #1! At the same time, it is striking that it has been very uncommon to see Java backdoors, Trojans and spyware. But that lack of Java malware variety is beginning to change. At the same time, aside from the recent, well-known BEAST Java implementation, it is striking that it has been very uncommon to see Java backdoors, bots, Trojans and spyware. But that lack of Java malware variety is beginning to change. My colleague Roman Unucheck identified a new Java bot with some interesting characteristics that we named “Backdoor.Java.Racac”.

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Blackhat USA 2011 Talks

Blackhat USA 2011 wraps up and the Defcon conference starts today. There is a little something for everyone in security here. Aside from the contests, networking, meeting folks in the industry and putting faces to names, I thought that the briefings had two fantastic talks. Read Full Article

Patch Tuesday June 2011

Patches are up! This month’s patch Tuesday is a sizable one by any standards. Microsoft is patching a total of 34 vulnerabilities in 16 bulletins. At least eight different product lines are updated. Adobe is coordinating release of Reader, Acrobat, Shockwave and Flash updates as well today. Read Full Article