Trojan:WinNT/Sality is a driver used by the Win32/Sality family to disable any hooks into the system service descriptor table (SSDT).
To detect and remove this threat and other malicious software that may be installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following:
It does this by copying the SSDT directly from ntoskrnl.exe and redirecting system calls to that copy rather than the active SSDT. This can effectively disable security software that relies on SSDT hooks, such as some HIPS and anti-virus software.