Something that may help in the future. Next time you get one of these mutating files that you can't identify, go to one of these two sites:

Virus Total,
or
Virus Scan

And they will allow you to upload the file to be scanned by several different scanning engines. Then it is usually just a matter of surfing to the appropriate site and finding the tool that targets that specific infection.


http://www.pandasoftware.com/download/utilities/
http://www.ravantivirus.com/pages/download.php
http://securityresponse.symantec.com...ools.list.html

Other AV sites have free tools available also, you just need to dig for them.