W32.Mumu.B.Worm

W32.Mumu.B.Worm is a worm that spreads through network shares. The main worm component is a file named Mumu.exe. The worm will create various files on the infected system, including both legitimate utilities and malicious files. Symantec products will detect the malicious files as Trojan.Mumuboy and Hacktool.Hacline.

Protection

• Initial Rapid Release version June 26, 2003
• Latest Rapid Release version July 19, 2008 revision 019
• Initial Daily Certified version June 26, 2003
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date June 26, 2003

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

Threat Assessment

Wild

• Wild Level: Medium
• Number of Infections: 50 - 999
• Number of Sites: More than 10
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Medium

Distribution

• Distribution Level: Medium