Worms/Viruses/Trojans    
FakeAlert-WwSec Mon, Mar 01 2010
Severity 
Aliases: 
Infects: [Windows 2000, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Vista, Windows XP]
Description:
FakeAlert-WwSec will silently install and run a virus scan on the system. It will falsely claim that it found viruses and will require the user to register the product to clean the system.

Impact:
It installs and run a virus scan on the system. It will falsely claim that it found viruses and will require the user to register the product to clean the system.

Propagation:
It spreads via IRC, peer-to-peer networks, newsgroup postings, email spam, etc.

For Further Information:
http://vil.nai.com/vil/content/v_259521.htm
Solution:
Disable System Restore (Windows Me/XP).
Update the virus definitions of your antivirus product.
Run a full system scan.
Delete any values added to the registry.