I recommend you UnHackMe - Ultimate Malware Killer for fast malware removal:
Free Download Fully Functional 30-day Trial. No credit card is required.
Reviews. EULA. Privacy Policy. Uninstall.
The file %SysDir%\winmants.exe can destroy your system, making the computer to work abnormally.
%SysDir%\winmants.exe is a dangerous file.
You need remove %SysDir%\winmants.exe from your computer immediately.
Kill the process %SysDir%\winmants.exe and remove %SysDir%\winmants.exe from Windows startup.