2/21: MyDoom-BC an Email Worm for Windows
February 20, 2005

W32/MyDoom-BC is an email worm for the Windows platform.

Emails sent by the worm have characteristics similar to the following examples:

Subject line:
hi
error
test
Message could not be delivered

Message body:
Dear user of (domain)
Mail server administrator of (domain) would like to inform you that
We have detected that your e-mail account has been used to send a large amount of unsolicited e-mail messages during this recent week.
We suspect that your computer had been compromised by a recent virus and now runs a trojan proxy server.
Please follow our instructions in the attachment file in order to keep your computer safe.
Virtually yours
(domain) user support team.

Attached file:
attachment.com
letter.zip
(username).exe

More information can be found at Sophos page.