W32.Wallz

W32.Wallz is a worm that attempts to exploit the Microsoft Windows Local Security Authority Service Remote Buffer Overflow (described in Microsoft Security Bulletin MS04-011). The worm spreads by randomly scanning IP addresses for computers vulnerable to this threat.

Protection

• Initial Rapid Release version February 7, 2005
• Latest Rapid Release version August 2, 2008 revision 020
• Initial Daily Certified version February 7, 2005
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date February 9, 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: Low

Distribution

• Distribution Level: Medium