Linked by Thom Holwerda on Mon 10th Apr 2006 21:17 UTC
Bugs & Viruses Virus researchers at Kaspersky Lab have found proof-of-concept code for a cross-platform virus capable of infecting both Windows and Linux systems. In an alert posted to Viruslist, Kaspersky said the sample virus has been given a dual name - Virus.Linux.Bi.a/ Virus.Win32.Bi.a - and highlighted the way attackers are targeting multiple platforms in malware attacks. "The virus doesn't have any practical application," the company said in the alert. "It's classic proof-of-concept code, written to show that it is possible to create a cross-platform virus."
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RE: I'm calling it FUD
by Ronald Vos on Tue 11th Apr 2006 15:02 UTC in reply to "I'm calling it FUD"
Ronald Vos
Member since:

After years of trying, no one has yet been able to create a practical Linux virus. Rootkits, yes, viruses, no. Or have I missed something?

It's impossible to write a practical Linux virus, as the marketshare is so little it would never spread. A cross-platform virus has more potential, but the added pay-off in exchange for a massive jump in complexity and thus buggyness and detectability wouldn't be worth it.

However, to infect Linux files, it's simply a matter of infecting Windows, loading the appropiate filesystemdriver (ext2 driver for windows is available, ext3/reiser not, and fat could be used for shared files), infecting the right files, and setting permissions right. Trivial is otherwise of course ;)

PS: hardly anyone writes viruses these days. Any self-replicating code these days is simply a worm. To infect Linux systems undetectably code-inserting will be necessary however.

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