Due to the nature in which this virus operates once a machine is successfully infected, read-access to its file may be denied. The AV scanner will not be able to detect the file in this case. Because of this, if a machine is suspected to be infected, users are recommended to follow the procedure below:
Reboot the system into Safe Mode (hit the F8 key as soon as the Starting Windows text is displayed, choose Safe Mode.
Run a system scan using the specified engine/DATs.
Delete files flagged as infected
Restart machine in default mode.