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Detection rules › Sigma

Cisco Clear Logs

Status
test
Severity
high
Log source
product cisco, service aaa
Author
Austin Clark
Source
github.com/SigmaHQ/sigma

Clear command history in network OS which is used for defense evasion

Known false positives

  • Legitimate administrators may run these commands

MITRE ATT&CK coverage

TacticTechniques
Stealth

Rule body

title: Cisco Clear Logs
id: ceb407f6-8277-439b-951f-e4210e3ed956
status: test
description: Clear command history in network OS which is used for defense evasion
references:
    - https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/command/reference/sysmgmt/n5k-sysmgmt-cr/n5k-sm_cmds_c.html
    - https://www.cisco.com/c/en/us/td/docs/ios/12_2sr/12_2sra/feature/guide/srmgtint.html#wp1127609
author: Austin Clark
date: 2019-08-12
modified: 2023-05-26
tags:
    - attack.stealth
    - attack.t1070.003
logsource:
    product: cisco
    service: aaa
detection:
    keywords:
        - 'clear logging'
        - 'clear archive'
    condition: keywords
falsepositives:
    - Legitimate administrators may run these commands
level: high

Stages and Predicates

Stage 0: condition

keywords

Stage 1: keywords

keywords:
    - 'clear logging'
    - 'clear archive'