W32.Janx

W32.Janx is a worm that attempts to exploit the Microsoft Windows LSASS Buffer Overrun Vulnerability (Microsoft Security Bulletin MS04-011). The worm spreads by randomly scanning IP addresses for vulnerable systems. The worm also connects to an IRC server and waits for commands.

Protection

• Initial Rapid Release version December 12, 2004
• Latest Rapid Release version July 26, 2008 revision 017
• Initial Daily Certified version December 12, 2004
• Latest Daily Certified version July 26, 2008 revision 018
• Initial Weekly Certified release date December 15, 2004

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: Medium

Distribution

• Distribution Level: Medium