Password Policy Discovery

calendar Jan 10, 2023 · attack.discovery attack.t1201  ·
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Detects password policy discovery commands

Sigma rule (View on GitHub)

 1title: Password Policy Discovery
 2id: ca94a6db-8106-4737-9ed2-3e3bb826af0a
 3status: stable
 4description: Detects password policy discovery commands
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1201/T1201.md
 7    - https://linux.die.net/man/1/chage
 8    - https://man7.org/linux/man-pages/man1/passwd.1.html
 9    - https://superuser.com/questions/150675/how-to-display-password-policy-information-for-a-user-ubuntu
10author: Ömer Günal, oscd.community, Pawel Mazur
11date: 2020/10/08
12modified: 2022/12/18
13tags:
14    - attack.discovery
15    - attack.t1201
16logsource:
17    product: linux
18    service: auditd
19detection:
20    selection_files:
21        type: 'PATH'
22        name:
23            - '/etc/pam.d/common-password'
24            - '/etc/security/pwquality.conf'
25            - '/etc/pam.d/system-auth'
26            - '/etc/login.defs'
27    selection_chage:
28        type: 'EXECVE'
29        a0: 'chage'
30        a1:
31            - '--list'
32            - '-l'
33    selection_passwd:
34        type: 'EXECVE'
35        a0: 'passwd'
36        a1:
37            - '-S'
38            - '--status'
39    condition: 1 of selection_*
40falsepositives:
41    - Legitimate administration activities
42level: low

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