Description:
Sality is a family of  file infecting viruses that spread by infecting exe and scr files. The  virus also includes an autorun worm component that allows it to spread  to any removable or discoverable drive. In addition, Sality includes a  downloader trojan component that installs additional malware via the  Web.
Symptom:
As with many other malware,  Sality disables antivirus software and prevents access to  certain  antivirus and security websites. Sality can also prevent booting into  Safe Mode and may delete security-related files found on infected  systems. To spread via the autorun component, Sality generally drops a  .cmd, .pif, and .exe to the root of discoverable drives, along with an  autorun.inf file which contains instructions to load the dropped file(s)  when the drive is accessed.
Remediation:
Scan  the system with up-to-date antivirus software. If a file is found to be  infected with Sality, allow the antivirus software to clean the file.  If other malware is found, allow the antivirus to delete or take the  action recommended by the scanner. If the malware persists, use a bootable antivirus rescue CD to boot the system cleanly and scan the system again. To prevent re-infection via infected USB drives, disable autorun.
How to Remove/Fix Sality Virus Infections ?
1.) Disable/Turn off System Restore 
2.) Download Norton Sality Virus Remover.
3.) Scan your whole system and let the remover clean it. 
4.)Reboot your system and rescan to make sure the virus has been totally removed from the system.

