2/10: Mydoom-AS a Mass-Mailing Worm
February 10, 2005

W32.Mydoom.AS@mm is a mass-mailing worm that uses its own SMTP engine to send itself to the email addresses that it finds on the compromised computer. It also propagates through file sharing networks.

The email will have a variable subject and attachment name. The attachment will have a .bat, .cmd, .exe, .pif, .scr, or .zip file extension.

Technical details can be found at Symantec page.