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Process Detail

Running, Malicious, Unwanted, Memory Hogs

Welcome to the PC Matic Process Library. We maintain an extensive list of common processes running on today’s PCs. Within this library you can learn more about the processes running on your machine.

Process Library Detail

What is msmpeng.exe? Windows Defender?

Vendor:      Microsoft Corporation
Product:     
Vendor Website:      http://onecare.live.com/standard/en-us/default.htm
Last Seen by PC Matic:      No Data

Process is Bad PC Matic has analyzed this process and determined that there is a high likelihood that it is bad.
Process is questionablePC Matic has analyzed this process and determined that the safety of this process is questionable.
Process is goodPC Matic has analyzed this process and determined that there is a high likelihood that it is good.
Process is goodThis process is a Microsoft or Windows process, but many viruses use this file name to escape notice.

Purpose: MsMpEng.exe is part of Microsoft's malware protection. Microsoft has used several names for their product including Windows Live OneCare, Windows Defender and latest being Microsoft Security Essentials.

msmpeng.exe is required by third-party software or hardware and should not disabled.


msmpeng.exe is known to be a bad process. Learn more about protecting your PC from these bad processes with PC Matic.
msmpeng.exe could be a harmful process. Learn more about protecging your PC from these potential harmful processes with PC Matic.
This information brought to you by PC Matic. PC Matic's real-time protection, Super Shield, blocks ALL bad and unknown threats to keep your PC secure.
msmpeng.exe is a Microsoft or Windows process but some versions of this exe carry viruses.
Learn more about protecting yourself from bad versions of this file with PC Matic.

Percentage of recently scanned PC's with this process running: 5.61%
Average CPU use for this program: 5%
Average RAM for this program: 51 MB


Program Name MD5 Count
msmpeng.exe

MD5 Hashes

# Status MD5 Revision Name Size
1 Status 0xf45dd1e1365d857dd08bc23563370d0e 12/7/2021 1:07:00 AM Unknown 1.1.1593.0 Windows Defender 13 KB
2 Status 0xb0f49da36f30922f5ddc3b623b778fce 4/20/2019 5:15:00 PM Unknown Unknown Windows Defender 21 KB
3 Status 0xc1f19d2bacbee9ab64d9ae69e9859ac0 3/20/2018 3:24:00 PM Unknown Unknown Windows Defender 19 KB
4 Status 0xcfce43b70ca0cc4dcc8adb62b792b173 11/25/2017 10:22:00 AM Unknown Unknown Windows Defender 11 KB
5 Status 0x90dc23d940551db35367fb1e40575b25 3/7/2017 6:00:00 AM Unknown Unknown Windows Defender 11 KB
6 Status 0x24516bf4e12a46cb67302e2cdcb8cddf 8/10/2016 4:36:00 AM Unknown Unknown Windows Defender 11 KB
7 Status 0xdc8b329d6b4026d2d6e957bc79336022 8/1/2016 4:10:00 PM Unknown Unknown Windows Defender 0 KB
8 Status 0x1ee3643d1aa747222427f63353611ad7 7/18/2016 6:14:00 PM Unknown Unknown Windows Defender 21 KB
9 Status 0x578c809bf745608646ea338a9ac48158 4/14/2016 9:55:00 PM Unknown Unknown Windows Defender 17 KB
10 Status 0xcc09bb7fdefc5763ccb3cf7dae2d76cf 3/22/2016 3:06:00 PM Unknown Unknown Windows Defender 0 KB
11 Status 0xe077fca2a7e79fb9bf67d3e30b5ce593 2/13/2016 4:54:00 PM Unknown Unknown Windows Defender 19 KB
12 Status 0xae04692038a565454efebae2c5fec60d 11/2/2015 11:00:00 AM Unknown Unknown Windows Defender 21 KB
13 Status 0x98de19acc703d8b06ed2c2c52f9053a0 10/13/2015 9:37:00 AM Unknown Unknown Windows Defender 11 KB
14 Status 0x8cab6b589f6610bf0e20780e153248c1 7/12/2015 6:35:00 PM Unknown Unknown Windows Defender 16 KB
15 Status 0xdda18c8d8799002e5ade55ac378a878d 6/26/2015 2:31:00 PM Unknown Unknown Windows Defender 21 KB
16 Status 0x37f77aebff23a99d1bfb4f34cd2d07f2 5/17/2015 4:17:00 PM Unknown Unknown Windows Defender 21 KB
17 Status 0x0a7f86657755ada92c57e597bf5151f7 2/8/2015 5:14:00 PM Unknown Unknown Windows Defender 21 KB
18 Status 0x581061776e1b7c4c7771e97ae5eaf377 11/29/2014 8:58:00 PM Unknown 1.1.1592.0 Windows Defender 13 KB
19 Status 0x3ea6a1a744d79328ae7e2c6fae4c4420 10/29/2014 12:21:00 PM Unknown Unknown Windows Defender 21 KB
20 Status 0xb910dc7d38f3834119f9c35a56418b3d 3/20/2014 5:22:00 PM Unknown Unknown Windows Defender 14 KB
21 Status 0xe5b069655f93515d9b9fa97726398d2d 1/3/2014 12:32:00 PM Unknown Unknown Windows Defender 14 KB
22 Status 0xc7fd413ceb3b37e1d21e4ff7a4d31162 10/12/2013 1:01:00 AM Unknown Unknown Windows Defender 21 KB
23 Status 0x5595edbda4fd99c82119046c0bdc3be2 7/5/2013 11:25:00 AM Unknown Unknown Windows Defender 13 KB
24 Status 0x13bcc40560fd2938a461b905a6d65f69 6/16/2013 8:37:00 AM Unknown Unknown Windows Defender 21 KB
25 Status 0x0d256342b3d154723676510f416a316d 6/6/2013 6:28:00 PM Unknown Unknown Windows Defender 21 KB


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