McAfee has sent out an advisory about W32/ which is a
mass-mailing worm with the following email characteristics:

 From : (address is spoofed)
Subject :
 Re: Hello
 Re: Thank you!
 Re: Thanks :)
 Re: Hi

Body Text:

Attachment: (with an extension of .exe, .scr, .com or .cpl)

This worm is considered a medium/level 3 threat due to prevalence.
Currently Symantec has not identified this worm, so has not published
information or virus definitions to detect or disinfect I will
update the list with more information as it becomes available. For now,
please be advised to avoid opening attachments meeting the above
criteria as well as any attachments you were not specifically expecting
until confirming legitimacy of the attachment with its sender.

Questions or problems regarding W32/ should be directed to
CIT Helpline at [log in to unmask] or 6-2604, or to your department's IT
staff if applicable.