W32.Mapson.C.Worm

W32.Mapson.C.Worm is a mass-mailing worm that sends itself to all the contacts in the MSN messenger contact list. The Subject line, Message body, and attachment vary. The attachment will have a .com, .exe, .scr, or .pif extension. Also, the email may spoof the From field.

The W32.Mapson.C.Worm worm:

• Attempts to spread itself through the KaZaA, KaZaA Lite, eDonkey2000, Gnucleus, Limewire, Morpheus, and Grokster file-sharing networks, as well as through ICQ.
• Terminates some popular antivirus, firewall, and system-monitoring programs.
• Is written in the Borland Delphi programming language and is compressed with UPX.

Protection

• Initial Rapid Release version July 2, 2003
• Latest Rapid Release version March 31, 2009 revision 036
• Initial Daily Certified version July 2, 2003
• Latest Daily Certified version April 15, 2009 revision 048
• Initial Weekly Certified release date July 2, 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: Medium

Distribution

• Distribution Level: High