Library / Sysinternals
sysmon.exe
System activity monitor · Microsoft Corporation
SysinternalsSysmon-confirmedSigma refs: 5
OriginalFilename
sysmon.exe
Some builds lack OriginalFilename
Gotchas
- 1 observed build carry no OriginalFilename at all.
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\sysmon.exe'
- OriginalFileName: 'sysmon.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="sysmon.exe" OR Processes.process_name="sysmon.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~ ("sysmon.exe")
or FileName =~ "sysmon.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("sysmon.exe") or
process.name : "sysmon.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['sysmon.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 |
|---|---|---|---|---|---|---|
| sysmon.exe | 2 | x64 | 10.0.26100.8972 → 10.0.28000.2804 | Win11 24H2 → Win11 26H1 (2) | Winbindex | |
| none | 1 | x86 | 15.22.0.0 | Sysinternals | ✓ 1 |
All 3 parsed builds
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| 7739793e09bf… | 10.0.28000.2804 | x64 | sysmon.exe | Win11 26H1 | Signed (Overlay) | Winbindex | |
| f196211c6cc3… | 10.0.26100.8972 | x64 | sysmon.exe | Win11 24H2 | Signed (Overlay) | Winbindex | |
| 2afacac21966… | 15.22.0.0 | x86 | none | Sysinternals Sysmon | Sysinternals | ✓ |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.