Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
25 lines
839 B
YAML
25 lines
839 B
YAML
title: User Has Been Deleted Via Userdel
|
|
id: 08f26069-6f80-474b-8d1f-d971c6fedea0
|
|
status: test
|
|
description: Detects execution of the "userdel" binary. Which is used to delete a user account and related files. This is sometimes abused by threat actors in order to cover their tracks
|
|
references:
|
|
- https://linuxize.com/post/how-to-delete-group-in-linux/
|
|
- https://www.cyberciti.biz/faq/linux-remove-user-command/
|
|
- https://www.cybrary.it/blog/0p3n/linux-commands-used-attackers/
|
|
- https://linux.die.net/man/8/userdel
|
|
author: Tuan Le (NCSGroup)
|
|
date: 2022-12-26
|
|
tags:
|
|
- attack.impact
|
|
- attack.t1531
|
|
logsource:
|
|
product: linux
|
|
category: process_creation
|
|
detection:
|
|
selection:
|
|
Image|endswith: '/userdel'
|
|
condition: selection
|
|
falsepositives:
|
|
- Legitimate administrator activities
|
|
level: medium
|