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Is the file %SysDir%\SISRAID3.SYS located on your computer? Then your computer is infected.
We do suggest you should remove %SysDir%\SISRAID3.SYS from your computer as soon as possible.
%SysDir%\SISRAID3.SYS is Trojan/Backdoor.
Kill the process %SysDir%\SISRAID3.SYS and remove %SysDir%\SISRAID3.SYS from the Windows startup.
%SysDir%\SISRAID3.SYS Information and Removal:
NPIDSZ4.SYS is known as: packed with PE_Patch [Kaspersky Lab].
MD5 of NPIDSZ4.SYS = 0BFC8E7FA0B026A8BF51BBEA3D766890
NPIDSZ4.SYS size is 12056 bytes.
Full path on a computer: %SYSTEM%\NPIDSZ4.SYS
Related Files:
%SYSTEM%\SISRAID3.EXE
%SYSTEM%\SISRAID3.SYS
%SYSTEM%\VIAC4.DLL