Library / LOLBin
certoc.exe
CertOC.exe · Microsoft Corporation
OriginalFilename
CertOC.exe
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\certoc.exe'
- OriginalFileName: 'CertOC.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="CertOC.exe" OR Processes.process_name="certoc.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~ ("CertOC.exe")
or FileName =~ "certoc.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("CertOC.exe") or
process.name : "certoc.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['certoc.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 |
|---|---|---|---|---|---|---|
| CertOC.exe | 4 | x64 | 10.0.17134.254 → 10.0.28000.2804 | Win10 1803 → Win11 26H1 (4) | Winbindex |
All 4 parsed builds
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| a92eec3bacc8… | 10.0.28000.2804 | x64 | CertOC.exe | Win11 26H1 | Winbindex | ||
| 40aed59a1365… | 10.0.17763.9376 | x64 | CertOC.exe | Win10 1809 | Unsigned | Winbindex | |
| 941eb32283e8… | 10.0.26100.7019 | x64 | CertOC.exe | Win11 24H2 | Unsigned | Winbindex | |
| a2a780ca48c5… | 10.0.17134.254 | x64 | CertOC.exe | Win10 1803 | Unsigned | Winbindex |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.