Detection rules › Sigma
Service StartupType Change Via PowerShell Set-Service
Detects the use of the PowerShell "Set-Service" cmdlet to change the startup type of a service to "disabled" or "manual"
Known false positives
- False positives may occur with troubleshooting scripts
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Impairment |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Service StartupType Change Via PowerShell Set-Service
id: 62b20d44-1546-4e61-afce-8e175eb9473c
status: test
description: Detects the use of the PowerShell "Set-Service" cmdlet to change the startup type of a service to "disabled" or "manual"
references:
- https://www.virustotal.com/gui/file/38283b775552da8981452941ea74191aa0d203edd3f61fb2dee7b0aea3514955
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-03-04
tags:
- attack.execution
- attack.defense-impairment
- attack.t1685
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith: '\powershell.exe'
- OriginalFileName: 'PowerShell.EXE'
selection_cli:
CommandLine|contains|all:
- 'Set-Service'
- '-StartupType'
CommandLine|contains:
- 'Disabled'
- 'Manual'
condition: all of selection_*
falsepositives:
- False positives may occur with troubleshooting scripts
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
- Image|endswith: '\powershell.exe'
- OriginalFileName: 'PowerShell.EXE'
Stage 2: selection_cli
selection_cli:
CommandLine|contains|all:
- 'Set-Service'
- '-StartupType'
CommandLine|contains:
- 'Disabled'
- 'Manual'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Image | ends_with |
| field:"Image" kind:ends_with value:"\powershell.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"PowerShell.EXE" |