Microsoft Build Engine Started by a Script Processedit

An instance of MSBuild, the Microsoft Build Engine, was started by a script or the Windows command interpreter. This behavior is unusual and is sometimes used by malicious payloads.

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


  • 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
powershell.exe or cscript.exe or wscript.exe) and
event.action:"Process Create (rule: ProcessCreate)"

Threat mappingedit