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Elastic Docs ›SIEM Guide [7.8] ›Detections (beta) ›Prebuilt rule reference

Unusual Windows Service

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Unusual Windows Service

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A machine learning job detected an unusual Windows service, This can indicate execution of unauthorized services, malware, or persistence mechanisms. In corporate Windows environments, hosts do not generally run many rare or unique services. This job helps detect malware and persistence mechanisms that have been installed and run as a service.

Rule type: machine_learning

Machine learning job: windows_anomalous_service

Machine learning anomaly threshold: 50

Severity: low

Risk score: 21

Runs every: 15 minutes

Searches indices from: now-45m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

References:

Tags:

  • Elastic
  • ML
  • Windows

Version: 1

Added (Elastic Stack release): 7.7.0

Potential false positives

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A newly installed program or one that runs rarely as part of a monthly or quarterly workflow could trigger this signal.

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