Library / Windows
wecutil.exe
Event Collector Command Line Utility · Microsoft Corporation
WindowsSysmon-confirmed
OriginalFilename
WECUTIL.EXE
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\wecutil.exe'
- OriginalFileName: 'WECUTIL.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="WECUTIL.EXE" OR Processes.process_name="wecutil.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~ ("WECUTIL.EXE")
or FileName =~ "wecutil.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("WECUTIL.EXE") or
process.name : "wecutil.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['wecutil.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 |
|---|---|---|---|---|---|---|
| WECUTIL.EXE | 2 | x64, x86 | 10.0.26100.9168 → 10.0.26100.9549 | Host scan | ✓ 2 |
All 2 parsed builds
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| e2b4913c6491… | 10.0.26100.9549 | x64 | WECUTIL.EXE | Host scan | ✓ | ||
| 2b0d622a9d62… | 10.0.26100.9168 | x86 | WECUTIL.EXE | Host scan | ✓ |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.