Conhost Spawned By Suspicious Parent Processedit

Detects when the Console Window Host (conhost.exe) process is spawned by a suspicious parent process, which could be indicative of code injection.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: high

Risk score: 73

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
  • Execution

Version: 4 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.13.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule queryedit

process where event.type in ("start", "process_started") and : "conhost.exe" and :
("svchost.exe", "lsass.exe", "services.exe", "smss.exe",
"winlogon.exe", "explorer.exe",
"dllhost.exe", "rundll32.exe", "regsvr32.exe", "userinit.exe",
"wininit.exe", "spoolsv.exe", "wermgr.exe",
"csrss.exe", "ctfmon.exe")

Threat mappingedit


Rule version historyedit

Version 4 (7.13.0 release)
  • Updated query, changed from:

    event.category:process and event.type:(start or process_started) and and or
    lsass.exe or services.exe or smss.exe or winlogon.exe or explorer.exe
    or dllhost.exe or rundll32.exe or regsvr32.exe or userinit.exe or
    wininit.exe or spoolsv.exe or wermgr.exe or csrss.exe or ctfmon.exe)
Version 3 (7.12.0 release)
  • Formatting only
Version 2 (7.11.2 release)
  • Formatting only