Suspicious macOS MS Office Child Processedit

Identifies suspicious child processes of frequently targeted Microsoft Office applications (Word, PowerPoint, and Excel). These child processes are often launched during exploitation of Office applications or by documents with malicious macros.

Rule type: eql

Rule indices:


Severity: medium

Risk score: 47

Runs every: 5m

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

Maximum alerts per execution: 100



  • Elastic
  • Host
  • macOS
  • Threat Detection
  • Initial Access

Version: 100

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

process where event.type in ("start", "process_started") and"Microsoft Word", "Microsoft PowerPoint", "Microsoft Excel") and
  ) and
  /* noisy false positives related to product version discovery and office errors reporting */
  not process.args:
      "/Library/Application Support/Microsoft/MERP*/Microsoft Error Error Reporting"