W32.Amani@mm is a mass-mailing worm that uses its own SMTP engine to send itself to all contacts in the Windows Address Book. The email message has the following characteristics:
The subject line is one of the following,
- - Alert!
- - Happy!
- - Important !
- - Thank you !
- - Welcom!
- - You only see.
When the worm arrives by email, it uses a MIME exploit that allows the worm to be executed when you read or preview the file. Information and a patch for this exploit are available at http://www.microsoft.com/technet/security/bulletin/MS01-020.asp
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.