W32.Korgo.T

W32.Korgo.T is a variant of W32.Korgo.N. This worm attempts to propagate by exploiting the Microsoft Windows LSASS Buffer Overrun Vulnerability (described in Microsoft Security Bulletin MS04-011) on TCP port 445. It also listens on TCP ports 113, 5111, and a random port between 256 and 8191.

Notes:

• Definitions dated prior to June 28, 2004 detect this threat as W32.Korgo.N.
• Symantec Security Response has developed a removal tool to clean the infections of W32.Korgo.T.

Protection

• Initial Rapid Release version June 22, 2004
• Latest Rapid Release version August 20, 2008 revision 017
• Initial Daily Certified version June 22, 2004
• Latest Daily Certified version August 20, 2008 revision 016
• Initial Weekly Certified release date June 23, 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: Moderate

Damage

• Damage Level: Low

Distribution

• Distribution Level: Medium