Library / LOLBin
mofcomp.exe
The Managed Object Format (MOF) Compiler · Microsoft Corporation
OriginalFilename
mofcomp.exe
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\mofcomp.exe'
- OriginalFileName: 'mofcomp.exe'
condition: selectionprocess_creation logsource. Sigma string matching is case-insensitive.
| tstats summariesonly=false count values(Processes.original_file_name) as original_file_name
from datamodel=Endpoint.Processes
where (Processes.original_file_name="mofcomp.exe" OR Processes.process_name="mofcomp.exe")
by Processes.dest Processes.process_name Processes.process_path Processes.process
| rename Processes.* as *Endpoint.Processes data model. On raw Sysmon events the field is OriginalFileName.
DeviceProcessEvents
| where ProcessVersionInfoOriginalFileName in~ ("mofcomp.exe")
or FileName =~ "mofcomp.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("mofcomp.exe") or
process.name : "mofcomp.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['mofcomp.exe'].includes(String(OriginalFileName || '').toLowerCase())Filter expression (JavaScript) for events carrying Sysmon's OriginalFileName field.
Values across builds
| OriginalFilename | Builds | Arch | File version | Windows releases | Source | Sysmon |
|---|---|---|---|---|---|---|
| mofcomp.exe | 17 | x64, x86 | 10.0.10240.17797 → 10.0.28000.3231 | Win10 1507 → Win11 26H1 (9) | Host scan, Winbindex | ✓ 2 |
All 17 parsed builds · 23 Windows release groups not verifiable
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| ca1a06b38f24… | 10.0.28000.3231 | x64 | mofcomp.exe | Win11 26H1 | Unsigned | Winbindex | |
| 76e755d27328… | 10.0.26100.9711 | x86 | mofcomp.exe | Win11 24H2 | Unsigned | Host scan, Winbindex | ✓ |
| 200319f859dd… | 10.0.26100.9711 | x64 | mofcomp.exe | Win11 24H2 | Unsigned | Host scan, Winbindex | ✓ |
| 669f1482eff9… | 10.0.14393.9611 | x86 | mofcomp.exe | Win10 1607 | Unsigned | Winbindex | |
| 514d02cd30f6… | 10.0.14393.9611 | x64 | mofcomp.exe | Win10 1607 | Unsigned | Winbindex | |
| 1a0c3817288e… | 10.0.28000.1450 | x86 | mofcomp.exe | Win11 26H1 | Unsigned | Winbindex | |
| c999b75c78e1… | 10.0.10240.17797 | x86 | mofcomp.exe | Win10 1507 | Unsigned | Winbindex | |
| 557a8a1caf9f… | 10.0.10240.17797 | x64 | mofcomp.exe | Win10 1507 | Unsigned | Winbindex | |
| c62d20b7df88… | 10.0.26100.5074 | x64 | mofcomp.exe | Win11 24H2, Win11 25H2 | Unsigned | Winbindex | |
| 40fbe17a3a29… | 10.0.26100.5074 | x86 | mofcomp.exe | Win11 24H2, Win11 25H2 | Unsigned | Winbindex | |
| 1289716a5bf9… | 10.0.17134.1 | x64 | mofcomp.exe | Win10 1803 | Unsigned | Winbindex | |
| ff02023bd6ac… | 10.0.19041.610 | x86 | mofcomp.exe | Win10 2004 | Unsigned | Winbindex | |
| c6997c7079f9… | 10.0.19041.610 | x64 | mofcomp.exe | Win10 2004 | Unsigned | Winbindex | |
| ab39ba677b87… | 10.0.16299.402 | x86 | mofcomp.exe | Win10 1709 | Unsigned | Winbindex | |
| 442e955d1582… | 10.0.16299.402 | x64 | mofcomp.exe | Win10 1709 | Unsigned | Winbindex | |
| cb62a7e00316… | 10.0.10586.0 | x64 | mofcomp.exe | Win10 1511 | Unsigned | Winbindex | |
| 8bd7380f1496… | 10.0.10586.0 | x86 | mofcomp.exe | Win10 1511 | Unsigned | Winbindex |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.