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The file KOS.EXE is malware related.
You must delete the file KOS.EXE immediately!
Delete the file KOS.EXE without delay!
Kill the process KOS.EXE and remove KOS.EXE from the Windows startup.
KOS.EXE Information and Removal:
KOS.EXE is known as: HeurEngine.MaliciousPacker [PCTools].
MD5 of KOS.EXE = DF435DC3E790036F667B5F8632F8C05D
KOS.EXE size is 204800 bytes.
Full path on a computer: %TEMP%\KOS.EXE
Related Files:
%TEMP%\KOS.EXE
%SYSTEM%\WINRTSNR.TXT