sc_exe_manipulating_windows_services.yml

name: Sc exe Manipulating Windows Services
id: f0c693d8-2a89-4ce7-80b4-98fea4c3ea6d
version: 4
date: '2020-07-21'
author: Rico Valdez, Splunk
status: production
type: TTP
description: This search looks for arguments to sc.exe indicating the creation or
  modification of a Windows service.
data_source:
- Sysmon EventID 1
search: '| tstats `security_content_summariesonly` values(Processes.process) as process
  min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes
  where Processes.process_name = sc.exe (Processes.process="* create *" OR Processes.process="*
  config *") by Processes.process_name Processes.parent_process_name Processes.dest
  Processes.user | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
  | `security_content_ctime(lastTime)` | `sc_exe_manipulating_windows_services_filter`'
how_to_implement: The detection is based on data that originates from Endpoint Detection
  and Response (EDR) agents. These agents are designed to provide security-related
  telemetry from the endpoints where the agent is installed. To implement this search,
  you must ingest logs that contain the process GUID, process name, and parent process.
  Additionally, you must ingest complete command-line executions. These logs must
  be processed using the appropriate Splunk Technology Add-ons that are specific to
  the EDR product. The logs must also be mapped to the `Processes` node of the `Endpoint`
  data model. Use the Splunk Common Information Model (CIM) to normalize the field
  names and speed up the data modeling process.
known_false_positives: Using sc.exe to manipulate Windows services is uncommon. However,
  there may be legitimate instances of this behavior. It is important to validate
  and investigate as appropriate.
references:
- https://www.secureworks.com/blog/drokbk-malware-uses-github-as-dead-drop-resolver
tags:
  analytic_story:
  - Windows Service Abuse
  - DHS Report TA18-074A
  - Orangeworm Attack Group
  - Windows Persistence Techniques
  - Disabling Security Tools
  - NOBELIUM Group
  - Azorult
  - Windows Drivers
  asset_type: Endpoint
  confidence: 80
  impact: 70
  message: A sc process $process_name$ with commandline $process$ to create of configure
    services in host $dest$
  mitre_attack_id:
  - T1543.003
  - T1543
  observable:
  - name: dest
    type: Hostname
    role:
    - Victim
  - name: user
    type: User
    role:
    - Victim
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  required_fields:
  - _time
  - Processes.process_name
  - Processes.process
  - Processes.parent_process_name
  - Processes.dest
  - Processes.user
  risk_score: 56
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1543.003/atomic_red_team/windows-sysmon.log
    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
    sourcetype: xmlwineventlog