windows_service_created_within_public_path.yml

name: Windows Service Created Within Public Path
id: 3abb2eda-4bb8-11ec-9ae4-3e22fbd008af
version: 2
date: '2024-04-26'
author: Mauricio Velazco, Splunk
status: production
type: TTP
description: The following analytc uses Windows Event Id 7045, `New Service Was Installed`,
  to identify the creation of a Windows Service where the service binary path is located
  in public paths. This behavior could represent the installation of a malicious service.
  Red Teams and adversaries alike may create malicious Services for lateral movement
  or remote code execution
data_source:
- Windows Event Log System 7045
search: '`wineventlog_system` EventCode=7045 ImagePath = "*.exe" NOT (ImagePath
  IN ("*:\\Windows\\*", "*:\\Program File*", "*:\\Programdata\\*", "*%systemroot%\\*"))
  | stats count min(_time) as firstTime max(_time) as lastTime by EventCode ImagePath
  ServiceName ServiceType StartType Computer UserID | rename Computer as dest | `security_content_ctime(firstTime)`
  | `security_content_ctime(lastTime)` | `windows_service_created_within_public_path_filter`'
how_to_implement: To successfully implement this search, you need to be ingesting
  logs with the Service name, Service File Name Service Start type, and Service Type
  from your endpoints.
known_false_positives: Legitimate applications may install services with uncommon
  services paths.
references:
- https://docs.microsoft.com/en-us/windows/win32/services/service-control-manager
- https://pentestlab.blog/2020/07/21/lateral-movement-services/
tags:
  analytic_story:
  - Active Directory Lateral Movement
  - Snake Malware
  asset_type: Endpoint
  confidence: 60
  impact: 90
  message: A Windows Service $ServiceName$ with a public path was created on
    $dest$
  mitre_attack_id:
  - T1543
  - T1543.003
  observable:
  - name: ServiceName
    type: Other
    role:
    - Other
  - name: dest
    type: Endpoint
    role:
    - Victim
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  required_fields:
  - EventCode
  - Service_File_Name
  - Service_Type
  - _time
  - Service_Name
  - Service_Start_Type
  risk_score: 54
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1569.002/windows_service_created_with_suspicious_service_path/windows-xml.log
    source: XmlWinEventLog:System
    sourcetype: XmlWinEventLog