Microsoft Build Engine Started by a System Processedit

An instance of MSBuild, the Microsoft Build Engine, was started by Explorer or the WMI (Windows Management Instrumentation) subsystem. This behavior is unusual and is sometimes used by malicious payloads.

Rule type: query

Rule indices:

  • winlogbeat-*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Maximum signals per execution: 100


  • Elastic
  • Windows

Version: 1

Added (Elastic Stack release): 7.7.0

Potential false positivesedit

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

Rule queryedit and or
wmiprvse.exe) and event.action:"Process Create (rule: ProcessCreate)"

Threat mappingedit