6/8: SillyFDC-AD Worm Spreads Via Removable Devices
W32/SillyFDC-AD is a worm with backdoor functionality for the Windows platform.
W32/SillyFDC-AD spreads via removable storage devices.
W32/SillyFDC-AD runs continuously in the background, providing a backdoor server that allows a remote intruder to gain access and control over the computer.
More information can be found at this Sophos page.