frack113
40 lines
1.2 KiB
YAML
40 lines
1.2 KiB
YAML
title: Local System Accounts Discovery - Linux
|
|
id: b45e3d6f-42c6-47d8-a478-df6bd6cf534c
|
|
status: test
|
|
description: Detects enumeration of local systeam accounts. This information can help adversaries determine which local accounts exist on a system to aid in follow-on behavior.
|
|
references:
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1087.001/T1087.001.md
|
|
author: Alejandro Ortuno, oscd.community
|
|
date: 2020/10/08
|
|
modified: 2022/11/27
|
|
tags:
|
|
- attack.discovery
|
|
- attack.t1087.001
|
|
logsource:
|
|
category: process_creation
|
|
product: linux
|
|
detection:
|
|
selection_1:
|
|
Image|endswith: '/lastlog'
|
|
selection_2:
|
|
CommandLine|contains: '''x:0:'''
|
|
selection_3:
|
|
Image|endswith:
|
|
- '/cat'
|
|
- '/head'
|
|
- '/tail'
|
|
- '/more'
|
|
CommandLine|contains:
|
|
- '/etc/passwd'
|
|
- '/etc/shadow'
|
|
- '/etc/sudoers'
|
|
selection_4:
|
|
Image|endswith: '/id'
|
|
selection_5:
|
|
Image|endswith: '/lsof'
|
|
CommandLine|contains: '-u'
|
|
condition: 1 of selection*
|
|
falsepositives:
|
|
- Legitimate administration activities
|
|
level: low
|