[J65nko]

From http://www.theregister.co.uk/2012/08/22/malware_crisis/

Security watchers have discovered a virus strain that compromises VMware virtual machines as well as infecting Mac OS X and Windows computers and Windows Mobile devices. It demonstrates previously unseen capabilities in the process.

The Crisis malware typically arrives in a Java archive file (.jar) and is typically installed by posing as a Flash Player Java applet to trick a victim into opening it.

The archive contains executable files targeting Apple and Microsoft operating systems; the malware is able to detect which platform it is running on and serve up the correct variant.

[snip]

OSX-Crisis seems to be a proof-of-concept code designed to probe virtualised environments for weaknesses, according to Symantec.

"This may be the first malware that attempts to spread onto a virtual machine. Many threats will terminate themselves when they find a virtual machine monitoring application, such as VMware, to avoid being analyzed, so this may be the next leap forward for malware authors," Symantec researcher Takashi Katsuki concludes.