huntrule

Suspicious Cisco Sniffing (via aaa)

This rule detects show when a monitor or a span/rspan is setup or modified

SigmamediumNetworkv1
sigma
title: Suspicious Cisco Sniffing (via aaa)
id: 90dbbbd7-eb2b-59b0-a5cd-fe2be5d25c1b
status: stable
description: This rule detects show when a monitor or a span/rspan is setup or modified
author: Huntrule Team
date: 2026-05-12
tags:
    - attack.credential-access
    - attack.discovery
    - attack.t1040
logsource:
    product: cisco
    service: aaa
detection:
    keywords:
        - 'monitor capture point'
        - 'set span'
        - 'set rspan'
    condition: keywords
falsepositives:
    - Unknown
level: medium
references:
    - https://attack.mitre.org/techniques/T1040/

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.