Most antivirus programs identify winmon.exe as malware—e.g. Avast identifies it as Win32:Evo-gen [Susp], and BitDefender identifies it as Gen:Variant.Zusy.177162.
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Description: Winmon.exe is not essential for Windows and will often cause problems. Winmon.exe is located in the C:\Windows\System32 folder.
The file size on Windows 10/8/7/XP is 110,080 bytes.
It is a file with no information about its developer. The program is not visible. You can uninstall this program in the Control Panel. Winmon.exe is not a Windows core file. Winmon.exe is able to monitor applications. Therefore the technical security rating is 51% dangerous.
Recommended: Identify winmon.exe related errors
If winmon.exe is located in a subfolder of "C:\Program Files", the security rating is 100% dangerous. The file size is 319,488 bytes. There is no file information. The program is not visible. The process uses ports to connect to or from a LAN or the Internet. The file is not a Windows core file. Winmon.exe is able to record keyboard and mouse inputs and manipulate other programs.
External information from Paul Collins:
There are different files with the same name:
Important: You should check the winmon.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active winmon process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the winmon.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.