Sigma rule: Linux Keylogging with Pam.d
A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-162048b9dc96, updated 2022-12-18T00:00:00.000Z.
Rule
- Title
- Linux Keylogging with Pam.d
- Status
- test
- Level
- high
- Author
- Pawel Mazur
- Date
- 2021-05-24
- Modified
- 2022-12-18
- File
- rules/linux/auditd/lnx_auditd_keylogging_with_pam_d.yml
- Commit
- ccbb0369507f796db0b0ae6854c8a2be471b9d84
Detect attempt to enable auditing of TTY input
Log source
- product
- linux
- service
- auditd
Detection
selection_path_events:
type: PATH
name:
- '/etc/pam.d/system-auth'
- '/etc/pam.d/password-auth'
selection_tty_events:
type:
- 'TTY'
- 'USER_TTY'
condition: 1 of selection_*False positives (as the rule lists them)
- Administrative work
Tags
- attack.collection
- attack.credential-access
- attack.t1003
- attack.t1056.001
MITRE ATT&CK ids this rule names
References
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.001/T1056.001.md
- https://linux.die.net/man/8/pam_tty_audit
- https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security_guide/sec-configuring_pam_for_auditing
- https://access.redhat.com/articles/4409591#audit-record-types-2
Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/auditd/lnx_auditd_keylogging_with_pam_d.yml
Sources and licences
SigmaHQ
"Linux Keylogging with Pam.d" by Pawel Mazur (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/auditd/lnx_auditd_keylogging_with_pam_d.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Cite this page
Dragons Eye Ransomware Tracker, "Sigma rule: Linux Keylogging with Pam.d",
entity page, dataset version ref-162048b9dc96, updated 2022-12-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/49aae26c-450e-448b-911d-b3c13d178dfc (accessed 2026-11-03).
Underlying source: SigmaHQ rule 49aae26c-450e-448b-911d-b3c13d178dfc, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.