Detection rules › Sigma
Sysinternals PsService Execution
Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1543.003 Create or Modify System Process: Windows Service |
| Privilege Escalation | T1543.003 Create or Modify System Process: Windows Service |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
Rule body yaml
title: Sysinternals PsService Execution
id: 3371f518-5fe3-4cf6-a14b-2a0ae3fd8a4f
status: test
description: Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering
references:
- https://learn.microsoft.com/en-us/sysinternals/downloads/psservice
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-16
modified: 2023-02-24
tags:
- attack.privilege-escalation
- attack.discovery
- attack.persistence
- attack.t1543.003
logsource:
category: process_creation
product: windows
detection:
selection:
- OriginalFileName: 'psservice.exe'
- Image|endswith:
- '\PsService.exe'
- '\PsService64.exe'
condition: selection
falsepositives:
- Legitimate use of PsService by an administrator
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
- OriginalFileName: 'psservice.exe'
- Image|endswith:
- '\PsService.exe'
- '\PsService64.exe'
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 |
|---|---|---|
Image | ends_with |
|
OriginalFileName | eq |
|