W32.Dasher.B

W32.Dasher.B is a worm that exploits the Microsoft Windows Distributed Transaction Coordinator Remote Exploit (as described in Microsoft Security Bulletin MS05-051) on TCP port 1025.

Protection

• Initial Rapid Release version December 16, 2005
• Latest Rapid Release version August 2, 2008 revision 020
• Initial Daily Certified version December 16, 2005
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date December 21, 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: Easy

Damage

• Damage Level: Medium

Distribution

• Distribution Level: Medium