W32.Wintoo.Worm

W32.Wintoo.Worm is a mass-mailing worm that sends itself to all the recipients in the Windows Address Book. It sends itself using the MAPI interface. The email will have the following characteristics:

• Subject: <Cyrilic text that loosely translates to "Look at this">
• Attachment: win2drv.exe

The worm also modifies the Windows background to a bitmap containing a message in Cyrilic.

Protection

• Initial Rapid Release version October 16, 2003
• Latest Rapid Release version August 20, 2008 revision 017
• Initial Daily Certified version October 16, 2003
• Latest Daily Certified version August 20, 2008 revision 016
• Initial Weekly Certified release date October 22, 2003

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

• Wild Level: Low
• Number of Infections: 0 - 49
• Number of Sites: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Low

Distribution

• Distribution Level: High