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

Microsoft Build Engine Using an Alternate Name

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Microsoft Build Engine Using an Alternate Name

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An instance of MSBuild, the Microsoft Build Engine, was started after being renamed. This is uncommon behavior and may indicate an attempt to run MSBuild unnoticed or undetected.

Rule type: query

Rule indices:

  • winlogbeat-*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

Tags:

  • Elastic
  • Windows

Version: 1

Added (Elastic Stack release): 7.7.0

Potential false positives

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The Build Engine is commonly used by Windows developers but use by non-engineers is unusual.

Rule query

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(pe.original_file_name:MSBuild.exe or
winlog.event_data.OriginalFileName: MSBuild.exe) and not process.name:
MSBuild.exe and event.action: "Process Create (rule: ProcessCreate)"

Threat mapping

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Framework: MITRE ATT&CKTM

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