Backdoor.Dister

Backdoor.Dister is a Trojan horse that periodically contacts a server for instructions and configuration data, and then sends batches of email as the server instructs. This functionality could be used to anonymously distribute malware or spam from an infected computer. This Trojan may be found as a file named Diskserv.exe.

Protection

• Initial Rapid Release version November 11, 2003
• Latest Rapid Release version June 22, 2009 revision 066
• Initial Daily Certified version November 11, 2003
• Latest Daily Certified version June 19, 2009 revision 051
• Initial Weekly Certified release date November 12, 2003

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

• Wild Level: Low
• Number of Infections: 50 - 999
• Number of Sites: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Low

Distribution

• Distribution Level: Low