KaZaa users warned of p2p worm

Researchers are warning peer-to-peer (p2p) application users of a new proof-of-concept virus that acts similarly to the W97M/Melissa malware.

The virus, MSH/Cibyz, which is based on Windows PowerShell, was released by members of the RRLF virus group, according to an advisory from McAfee.

PowerShell is a command line shell and scripting language that runs on Microsoft XP, Windows Server 2003, Vista and Longhorn operating systems.

The malware is a low risk to home and corporate users, according to a McAfee advisory. However, it can create a copy of itself in the Windows system directory and then modifies registry keys so users cannot view hidden files and extensions.

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