Detection rules › Sigma
Service creation (PowerShell)
Detects scenarios where an attacker attempts to create a service for persistence.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1543.003 Create or Modify System Process: Windows Service |
Event coverage
| Provider | Event | Title |
|---|---|---|
| PowerShell | Event ID 4103 | Payload Context: ContextInfo User Data: UserData. |
| PowerShell | Event ID 4104 | Creating Scriptblock text (MessageNumber of MessageTotal). |
| PowerShell | Event ID 800 | Event ID 800 |
Rule body yaml
title: Service creation (PowerShell)
description: Detects scenarios where an attacker attempts to create a service for persistence.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0003-Persistence/T1543.003-Create%20or%20Modify%20System%20Process-Windows%20Service
- https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/new-service?view=powershell-7.1
tags:
- attack.persistence
- attack.t1543.003
author: mdecrevoisier
status: experimental
logsource:
product: windows
category:
- ps_module
- ps_classic_script
- ps_script
detection:
selection1_powershell_native:
EventID: 800
EventData|contains|all:
- New-Service
- Name
selection2_powershell_modern:
EventID: 4103
Payload|contains|all:
- New-Service
- Name
selection3_powershell_block:
EventID: 4104
ScriptBlockText|contains|all:
- New-Service
- Name
condition: 1 of selection*
falsepositives:
- administrator deplying service
- new application installation
level: high
Stages and Predicates
Stage 0: condition
1 of selection*Stage 1: selection1_powershell_native
selection1_powershell_native:
EventID: 800
EventData|contains|all:
- New-Service
- Name
Stage 2: selection2_powershell_modern
selection2_powershell_modern:
EventID: 4103
Payload|contains|all:
- New-Service
- Name
Stage 3: selection3_powershell_block
selection3_powershell_block:
EventID: 4104
ScriptBlockText|contains|all:
- New-Service
- Name
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
EventData | match |
|
Payload | match |
|
ScriptBlockText | match |
|