name: Linux Disable Services
id: f2e08a38-6689-4df4-ad8c-b51c16262316
version: 1
date: '2022-04-22'
author: Teoderick Contreras, Splunk
status: production
type: TTP
description: The following analytic is to detect events that attempts to disable a
  service. This is typically identified in parallel with other instances of service
  enumeration of attempts to stop a service and then delete it. Adversaries utilize
  this technique like industroyer2 malware to terminate security services or other
  related services to continue there objective as a destructive payload.
data_source:
- Sysmon Event ID 1
search:
  selection1:
    CommandLine: '* disable*'
    Image|endswith:
    - systemctl
    - service
    - svcadm
  condition: selection1
how_to_implement: To successfully implement this search, you need to be ingesting
  logs with the process name, parent process, and command-line executions from your
  endpoints. If you are using Sysmon, you can use the Add-on for Linux Sysmon from
  Splunkbase.
known_false_positives: Administrator or network operator can use this application
  for automation purposes. Please update the filter macros to remove false positives.
references:
- https://www.welivesecurity.com/2022/04/12/industroyer2-industroyer-reloaded/
- https://cert.gov.ua/article/39518
tags:
  analytic_story:
  - Industroyer2
  asset_type: Endpoint
  confidence: 70
  impact: 70
  message: An instance of $parent_process_name$ spawning $process_name$ was identified
    attempting to disable services on endpoint $dest$ by $user$.
  mitre_attack_id:
  - T1489
  observable:
  - name: dest
    type: Hostname
    role:
    - Victim
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  risk_score: 49
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1489/linux_service_stop_disable/sysmon_linux.log
    source: Syslog:Linux-Sysmon/Operational
    sourcetype: sysmon_linux