Antiboot

Antiboot is a useful software that can identify and clean the infection with viruses from the Backdoor.Win32.Sinowal family.
This family of malware has a rather stealthy behavior and cannot be detected on an infected computer by standard means. It hides infected objects “behind” their original copies.
Besides that, main body of the malicious program (kernel level driver) is not present in the file system. It resides in unused area outside of the last partition of a hard disk. This malicious program does not use the operating system to start its driver. The driver is started independently, so the operating system is not aware of its presence.
Although it almost does not have a visible manifestation which would be harmful for the user, malware belonging to the family Backdoor.Win32.Sinowal poses a serious threat to the user because it opens remote access to the infected PC for hackers.