Windows 7 - How can I remove Heular virus from my USB flash drive?

This virus is very nasty..My USB flash drive has the folder named "My Sexy Folder" and an Autorun.inf file. I already scanned it with Avira and Malwarebytes, they detected it but the file cannot be eradicated..Even reformatting my flash drive cannot remove this kind of virus. Is there any remedy to this problem?
Thanks!

try a scan with Microsoft Security Essentials - Free Antivirus for Windows

Its more likely that your pc is infected so whenever you copy something to your flashdrive it gets reinfected. MBAM should catch this infection. But before running MBAM clean your temp file and all the cookies and internet history and browser catche etc with ccleaner. Also download TFC which will do a much deeper cleansing of the temp file. Then update MBAM and connect the flush drive in the PC and do a FULL SCAN. Remove everything MBAM finds and reboot. Let us know if this helps.
TFC - Temp File Cleaner by OldTimer - Geeks to Go Forums

Edit: Its important to disable autorun functionality. Either you can follow this article to disable autorun or you can download panda USB vaccine to disable autorun and also vaccinate your flush drive.
http://support.microsoft.com/kb/967715
http://www.pandasecurity.com/homeuse...ds/usbvaccine/