Library / Windows
autochk.exe
Auto Check Utility · Microsoft Corporation
WindowsSysmon-confirmed
OriginalFilename
AutoChk.Exe
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\autochk.exe'
- OriginalFileName: 'AutoChk.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="AutoChk.Exe" OR Processes.process_name="autochk.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~ ("AutoChk.Exe")
or FileName =~ "autochk.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("AutoChk.Exe") or
process.name : "autochk.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['autochk.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 |
|---|---|---|---|---|---|---|
| AutoChk.Exe | 2 | x64, x86 | 10.0.26100.9444 | Host scan | ✓ 2 |
All 2 parsed builds
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| 8f20434370ed… | 10.0.26100.9444 | x64 | AutoChk.Exe | Host scan | ✓ | ||
| 2821a85a8cae… | 10.0.26100.9444 | x86 | AutoChk.Exe | Host scan | ✓ |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.