Antivirus firm Network Associates today raised to 'medium' its risk assessment of the recently discovered Windows worm Sober.f.
Sober.f is a prolific worm that spreads via email, sending itself to addresses found on the victim's machine.
The worm has many of the same functionalities as its predecessors: it comes in the form of an attachment and contains a varying filename.
Users need to manually run the attachment in order to be infected.
After executing, Sober.f emails itself out as an attachment with a random filename and installs itself to the victim machine's system directory using a filename constructed from a string pool carried within the worm.
Sober.f, which is reported to be difficult to find and hides from many antivirus scanners, was first reported to researchers earlier today. To date, Network Associates has received more than 100 reports of the virus in the wild.
Further information on the worm and instructions for its removal are available from Network Associates here.
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Holes in vendor's antivirus software leave users vulnerable to hackers and worms 06 Apr 2004
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