Detection rules › Sigma
Touch Suspicious Service File
Detects usage of the "touch" process in service file.
Known false positives
- Admin changing date of files.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Linux | Event ID 1: Process Create |
Rule body
title: Touch Suspicious Service File
id: 31545105-3444-4584-bebf-c466353230d2
status: test
description: Detects usage of the "touch" process in service file.
references:
- https://blogs.blackberry.com/
- https://twitter.com/Joseliyo_Jstnk/status/1620131033474822144
author: Joseliyo Sanchez, @Joseliyo_Jstnk
date: 2023-01-11
tags:
- attack.stealth
- attack.t1070.006
logsource:
product: linux
category: process_creation
detection:
selection:
Image|endswith: '/touch'
CommandLine|contains: ' -t '
CommandLine|endswith: '.service'
condition: selection
falsepositives:
- Admin changing date of files.
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '/touch'
CommandLine|contains: ' -t '
CommandLine|endswith: '.service'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | ends_with |
| field:"CommandLine" kind:ends_with value:".service" |
CommandLine | match |
| field:"CommandLine" kind:match value:" -t " |
Image | ends_with |
| field:"Image" kind:ends_with value:"/touch" |