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Detection rules › Sigma

Cisco Modify Configuration

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

Modifications to a config that will serve an adversary's impacts or persistence

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1053 Scheduled Task/Job
PersistenceT1053 Scheduled Task/Job, T1505 Server Software Component
Privilege EscalationT1053 Scheduled Task/Job
ImpactT1490 Inhibit System Recovery, T1565.002 Data Manipulation: Transmitted Data Manipulation

Rule body yaml

title: Cisco Modify Configuration
id: 671ffc77-50a7-464f-9e3d-9ea2b493b26b
status: test
description: Modifications to a config that will serve an adversary's impacts or persistence
author: Austin Clark
date: 2019-08-12
modified: 2025-04-28
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.persistence
    - attack.impact
    - attack.t1490
    - attack.t1505
    - attack.t1565.002
    - attack.t1053
logsource:
    product: cisco
    service: aaa
detection:
    keywords:
        - 'ip http server'
        - 'ip https server'
        - 'kron policy-list'
        - 'kron occurrence'
        - 'policy-list'
        - 'access-list'
        - 'ip access-group'
        - 'archive maximum'
        - 'ntp server'
    condition: keywords
falsepositives:
    - Legitimate administrators may run these commands
level: medium

Stages and Predicates

Stage 0: condition

keywords

Stage 1: keywords

keywords:
    - 'ip http server'
    - 'ip https server'
    - 'kron policy-list'
    - 'kron occurrence'
    - 'policy-list'
    - 'access-list'
    - 'ip access-group'
    - 'archive maximum'
    - 'ntp server'