Yesterday even using a PC protected by Clamwin, my usb key was infected by a malware which hid files and folders, and created malicious shortcut for each hidden file or folder. By clicking on shortcut I spreaded the virus in the computer.
As Clamwin failed to disinfect, I tried Trend Titanium and Comodo Internet Security (CIS) which both failed too.
But Usbfix http://www.commentcamarche.net/download/telecharger-34079838-usbfix was able to cleanup that malware and its malicious shortcuts.
So I had sent that Facebook.vbs malware to Comodo for reporting that CIS has not been able to detect it.
Is it a new version of Facebook.vbs?