InstallUtil Process Making Network Connectionsedit

Identifies InstallUtil.exe making outbound network connections. This may indicate adversarial activity as InstallUtil is often leveraged by adversaries to execute code and evade detection.

Rule type: eql

Rule indices:

  • winlogbeat-*

Severity: medium

Risk score: 21

Runs every: 5 minutes

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

Maximum alerts per execution: 100


  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Defense Evasion

Version: 2 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.11.0

Rule authors: Elastic

Rule license: Elastic License

Rule queryedit

/* the benefit of doing this as an eql sequence vs kql is this will
limit to alerting only on the first network connection */ sequence by
process.entity_id [process where event.type in ("start",
"process_started") and : "installutil.exe"] [network
where : "installutil.exe" and network.direction ==

Threat mappingedit


Rule version historyedit

Version 2 (7.11.0 release)
  • Formatting only