mofcomp.exe
Sources: 300M+ executions observed in the wild.
Summary
Managed Object Format (MOF) Compiler compiles MOF files that define WMI classes, instances, and events. Used during WMI provider registration and system configuration.
mofcomp.exe is the 68th most commonly executed Windows program in EchoTrail's dataset, observed 401,033 times across enterprise environments. It typically runs from C:\Windows\System32\wbem and it is most often launched by WmiPrvSE.exe.
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Behavior
Top Paths
- C:\Windows\System32\wbem99.76%
- C:\Windows\SysWOW64\wbem0.24%
Top Hashes (SHA256)
- 69389ab614d366b30d46e09b186a3831d74db81e81ed76cb85f4f9f14e14ac4692.17%
- 060b1e6819737a9156b7b0618937ab17bf2c327cf72edabca14ad4b93451fa2e1.72%
- 2f56dc04d50ee1bce10f1dacd3ac62c2736f47bbd4e81d29f2ca6d38f686b3fd1.71%
- 6e589d7d741587143526c36a5cad5791031d3c52d9e7e0dbfc39cd5c207f7b2f1.65%
- 3f45410c624e118f81ee00d9a3ba4cda71cd71a99afe87c8d8034551facdeb6e0.79%
- ec049a032436a2bd31491aee3bf054aae9d63b24282186f208d93a4cf4c946c90.37%
- 8b27a4e560fb4139b9e93e707fc387c5dfcb3d56214898b9ae51eed888fc35280.27%
- 442e955d15821339937912c618fe400dd3aac53eff2d0c38c19effbc0f5325440.2%
- a480d15a53f17e52c456e821e9cdd850363d631417bad6c6164c6efda9ec92880.16%
- e480029a0cefd09e84f474bef944c4dc56af44f0aa7063d4e259621846f29bfa0.16%
Process Ancestry
Top Grandparents
- msiexec.exe36.88%
- CylanceSvc.exe14.6%
- explorer.exe4.24%
- setup.exe0.6%
Top Parents
- WmiPrvSE.exe96.18%
- msiexec.exe2.1%
- MsMpEng.exe0.29%
- CyUpdate.exe0.24%
- InstallUtil.exe0.14%
- cmd.exe0.07%
- aspnet_regiis.exe0.01%
- rundll32.exe0.01%
Top Children
- conhost.exe100%
Security Analysis
What does mofcomp.exe normally do?
Located in C:\Windows\System32 or standard Windows/Office paths. Part of normal Windows or Office operations.
When is mofcomp.exe suspicious?
Running from non-standard paths. Parent process other than expected. Spawning shells or unusual child processes.
How do attackers abuse mofcomp.exe?
Not commonly abused.
Detection guidance
Low priority. Validate path and parent process.
False positive notes
Normal system/Office operation.
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