Suspicious Cisco Show Commands Input (via aaa)

This rule detects see what commands are being input into the device by other people, full credentials can be in the history

SigmamediumNetworkv1
sigma
title: Suspicious Cisco Show Commands Input (via aaa)
id: 9088a90b-064d-552f-b977-f6b3eadc46e5
status: stable
description: This rule detects see what commands are being input into the device by other people, full credentials can be in the history
author: Huntrule Team
date: 2026-06-22
tags:
    - attack.credential-access
    - attack.t1552.003
logsource:
    product: cisco
    service: aaa
detection:
    keywords:
        - 'show history'
        - 'show history all'
        - 'show logging'
    condition: keywords
falsepositives:
    - Unknown
level: medium
references:
    - https://attack.mitre.org/techniques/T1552/003/

Known false positives

  • Unknown

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