sigma/rules/linux/process_creation/proc_creation_lnx_security_tools_disabling.yml at master · SigmaHQ/sigma · GitHub

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title: Disabling Security Tools
id: e3a8a052-111f-4606-9aee-f28ebeb76776
status: test
description: Detects disabling security tools
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md
author: Ömer Günal, Alejandro Ortuno, oscd.community
date: 2020-06-17
modified: 2022-10-09
tags:
    - attack.defense-impairment
    - attack.t1686
logsource:
    category: process_creation
    product: linux
detection:
    selection_iptables_1:
        Image|endswith: '/service'
        CommandLine|contains|all:
            - 'iptables'
            - 'stop'
    selection_iptables_2:
        Image|endswith: '/service'
        CommandLine|contains|all:
            - 'ip6tables'
            - 'stop'
    selection_iptables_3:
        Image|endswith: '/chkconfig'
        CommandLine|contains|all:
            - 'iptables'
            - 'stop'
    selection_iptables_4:
        Image|endswith: '/chkconfig'
        CommandLine|contains|all:
            - 'ip6tables'
            - 'stop'
    selection_firewall_1:
        Image|endswith: '/systemctl'
        CommandLine|contains|all:
            - 'firewalld'
            - 'stop'
    selection_firewall_2:
        Image|endswith: '/systemctl'
        CommandLine|contains|all:
            - 'firewalld'
            - 'disable'
    selection_carbonblack_1:
        Image|endswith: '/service'
        CommandLine|contains|all:
            - 'cbdaemon'
            - 'stop'
    selection_carbonblack_2:
        Image|endswith: '/chkconfig'
        CommandLine|contains|all:
            - 'cbdaemon'
            - 'off'
    selection_carbonblack_3:
        Image|endswith: '/systemctl'
        CommandLine|contains|all:
            - 'cbdaemon'
            - 'stop'
    selection_carbonblack_4:
        Image|endswith: '/systemctl'
        CommandLine|contains|all:
            - 'cbdaemon'
            - 'disable'
    selection_selinux:
        Image|endswith: '/setenforce'
        CommandLine|contains: '0'
    selection_crowdstrike_1:
        Image|endswith: '/systemctl'
        CommandLine|contains|all:
            - 'stop'
            - 'falcon-sensor'
    selection_crowdstrike_2:
        Image|endswith: '/systemctl'
        CommandLine|contains|all:
            - 'disable'
            - 'falcon-sensor'
    condition: 1 of selection*
falsepositives:
    - Legitimate administration activities
level: medium