huntrule

Cisco IOS AAA Logging Disabled via 'no logging' and 'no aaa new-model' commands

Flags Cisco AAA command text that includes 'no logging' and/or 'no aaa new-model' to indicate logging being turned off.

FreeReviewedSigma · High · v2
Product
cisco
Service
aaa
Author
Austin Clark (SigmaHQ), DRL 1.1
Published
2019-08-11
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule matches command text indicating logging has been disabled locally by using Cisco IOS AAA-related syntax. Disabling logging reduces visibility and can help an attacker avoid detection after gaining access. It relies on telemetry that records the exact CLI or command strings containing the keywords "no logging" and "no aaa new-model".

Reporting behind it

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Suspicious Security Software Uninstallation via WMIC Product Call Uninstall (Chaos Ransomware)
Suspicious Security Product Uninstall via wmic product call uninstall
Cisco IOS AAA Logging Disabled via 'no logging' and 'no aaa new-model' commands
Pivot detection · T1685 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. v1
    No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.