Most antivirus programs identify WinMgmt.exe as malware—for instance Kaspersky identifies it as Packed.Win32.Black.a, and Microsoft identifies it as Trojan:Win32/Sisproc.
The WinMgmt.exe file is a software component of Windows by Microsoft.
This Microsoft product is responsible for client management activities in Windows. It is run whenever a piece of client software requires or requests its services.
WinMgmt stands for Windows Management Instrumentation
The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.
The WinMgmt.exe process does provide any valid information about its producer.
Description: WinMgmt.exe is not essential for Windows and will often cause problems. WinMgmt.exe is located in the C:\Windows folder.
The file size on Windows 10/8/7/XP is 468,480 bytes.
There is no file information. The program has no visible window. The program is loaded during the Windows boot process (see Registry key: Winlogon\Shell, win.ini). WinMgmt.exe is not a Windows system file. WinMgmt.exe appears to be a compressed file. Therefore the technical security rating is 70% dangerous; however you should also read the user reviews.
Recommended: Identify WinMgmt.exe related errors
External information from Paul Collins:
There are different files with the same name:
Important: You should check the WinMgmt.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 WinMgmt process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the WinMgmt.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.