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Persistence via Update Orchestrator Service Hijack
editPersistence via Update Orchestrator Service Hijack
editIdentifies potential hijacking of the Microsoft Update Orchestrator Service to establish persistence with an integrity level of SYSTEM.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Persistence
Version: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess where event.type == "start" and process.parent.executable : "C:\\Windows\\System32\\svchost.exe" and process.parent.args : "UsoSvc" and not process.executable : ( "C:\\Windows\\System32\\UsoClient.exe", "C:\\Windows\\System32\\MusNotification.exe", "C:\\Windows\\System32\\MusNotificationUx.exe", "C:\\Windows\\System32\\MusNotifyIcon.exe", "C:\\Windows\\System32\\WerFault.exe", "C:\\Windows\\System32\\WerMgr.exe" )
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Create or Modify System Process
- ID: T1543
- Reference URL: https://attack.mitre.org/techniques/T1543/
-
Sub-technique:
- Name: Windows Service
- ID: T1543.003
- Reference URL: https://attack.mitre.org/techniques/T1543/003/