W32.Shoho@mm

W32.Shoho@MM is a mass mailing worm that is written in Visual Basic. It sends itself as the attachment "Readme.txt (many blank spaces) .pif"

This worm also uses the IFRAME vulnerability that allows Microsoft Outlook to execute the attachment automatically. There are three variants of this worm. All are detected as W32.Shoho@mm.

Protection

• Initial Rapid Release version December 21, 2001
• Latest Rapid Release version July 19, 2008 revision 019
• Initial Daily Certified version December 21, 2001
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date pending

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: Easy

Damage

• Damage Level: Low

Distribution

• Distribution Level: High