Detection rules › Sigma
Unusual Parent Process For Cmd.EXE
Detects suspicious parent process for cmd.exe
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Unusual Parent Process For Cmd.EXE
id: 4b991083-3d0e-44ce-8fc4-b254025d8d4b
status: test
description: Detects suspicious parent process for cmd.exe
references:
- https://www.elastic.co/guide/en/security/current/unusual-parent-process-for-cmd.exe.html
author: Tim Rauch, Elastic (idea)
date: 2022-09-21
modified: 2023-12-05
tags:
- attack.execution
- attack.t1059
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\cmd.exe'
ParentImage|endswith:
- '\csrss.exe'
- '\ctfmon.exe'
- '\dllhost.exe'
- '\epad.exe'
- '\FlashPlayerUpdateService.exe'
- '\GoogleUpdate.exe'
- '\jucheck.exe'
- '\jusched.exe'
- '\LogonUI.exe'
- '\lsass.exe'
- '\regsvr32.exe'
- '\SearchIndexer.exe'
- '\SearchProtocolHost.exe'
- '\SIHClient.exe'
- '\sihost.exe'
- '\slui.exe'
- '\spoolsv.exe'
- '\sppsvc.exe'
- '\taskhostw.exe'
- '\unsecapp.exe'
- '\WerFault.exe'
- '\wermgr.exe'
- '\wlanext.exe'
- '\WUDFHost.exe'
condition: selection
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\cmd.exe'
ParentImage|endswith:
- '\csrss.exe'
- '\ctfmon.exe'
- '\dllhost.exe'
- '\epad.exe'
- '\FlashPlayerUpdateService.exe'
- '\GoogleUpdate.exe'
- '\jucheck.exe'
- '\jusched.exe'
- '\LogonUI.exe'
- '\lsass.exe'
- '\regsvr32.exe'
- '\SearchIndexer.exe'
- '\SearchProtocolHost.exe'
- '\SIHClient.exe'
- '\sihost.exe'
- '\slui.exe'
- '\spoolsv.exe'
- '\sppsvc.exe'
- '\taskhostw.exe'
- '\unsecapp.exe'
- '\WerFault.exe'
- '\wermgr.exe'
- '\wlanext.exe'
- '\WUDFHost.exe'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Image | ends_with |
| field:"Image" kind:ends_with value:"\cmd.exe" |
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with |