W32.AllocUp.A

W32.AllocUp.A is a network-aware worm that opens a back door on a random TCP port. The worm attempts to spread by exploiting the Microsoft Windows Local Security Authority Service Remote Buffer Overflow (as described in Microsoft Security Bulletin MS04-011).

Protection

• Initial Rapid Release version April 5, 2005
• Latest Rapid Release version August 20, 2008 revision 017
• Initial Daily Certified version April 5, 2005
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date April 6, 2005

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: Medium