Have a look here IF it helps:
How do you remove brontok virus manually?
Virus so tossed out the flash drve after removing all in there. Tried to put it into quarentine using AVG Free Antivirus, Spybot S&D 1.6.00, Ad-Aware 7.10.11 and tried Comodo Firewall Pro 188.8.131.52, it was still there but in the U3 Folder of scandisk cruzon 4 gb. Since the others were secure, it was ok to tossed it out. I can always buy another. Darrell
PS- I even formatted that drive and 5 folders were deleted, still showed that BRONTOK was still there. Tried it later and all was deleted but not BRONTOK Virus