W32.Mytob family of worms

Discovery began in February 2005

The W32.Mytob family of network worms began to surface in February 2005 and several variants have been released since that time. These worms propogate using the following vulnerabilities:

These are mass-mailing worms that use its own SMTP engine to send e-mail to addresses it gathers from compromised computers. It also had back door capability.

Removal

You can find more information and removal instructions as well as tools for each variant from Symantec from the following links: