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Disabling Security Tools

Detects disabling security tools

MITRE ATT&CK

defense-evasion

Detection Query

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*

Author

Ömer Günal, Alejandro Ortuno, oscd.community

Created

2020-06-17

Data Sources

linuxProcess Creation Events

Platforms

linux

References

https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.004/T1562.004.md

Tags

attack.defense-evasionattack.t1562.004

Raw Content

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-evasion
    - attack.t1562.004
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