IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Persistence via Update Orchestrator Service Hijack

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Persistence via Update Orchestrator Service Hijack

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Identifies potential hijacking of the Microsoft Update Orchestrator Service to establish persistence with an integrity level of SYSTEM.

Rule type: query

Rule indices:

winlogbeat-*
logs-endpoint.events.*

Severity: high

Risk score: 73

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://github.com/irsl/CVE-2020-1313

Tags:

Elastic
Host
Windows
Threat Detection
Persistence

Version: 1

Added (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Rule query

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event.category:process and event.type:(start or process_started) and
process.parent.name:svchost.exe and process.parent.args:(UsoSvc or
usosvc) and not process.name:(UsoClient.exe or usoclient.exe or
MusNotification.exe or musnotification.exe or MusNotificationUx.exe or
musnotificationux.exe)

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: New Service
- ID: T1050
- Reference URL: https://attack.mitre.org/techniques/T1050/

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