Suspicious Browser Child Processedit

Identifies the execution of a suspicious browser child process. Adversaries may gain access to a system through a user visiting a website over the normal course of browsing. With this technique, the user’s web browser is typically targeted for exploitation.

Rule type: eql

Rule indices:


Severity: high

Risk score: 73

Runs every: 5m

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

Maximum alerts per execution: 100



  • Domain: Endpoint
  • OS: macOS
  • Use Case: Threat Detection
  • Tactic: Initial Access
  • Tactic: Execution
  • Data Source: Elastic Defend

Version: 105

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

process where host.os.type == "macos" and event.type in ("start", "process_started") and : ("Google Chrome", "Google Chrome Helper*", "firefox", "Opera", "Safari", "", "Microsoft Edge") and : ("sh", "bash", "dash", "ksh", "tcsh", "zsh", "curl", "wget", "python*", "perl*", "php*", "osascript", "pwsh") and
  process.command_line != null and
  not process.command_line : "*/Library/Application Support/Microsoft/MAU*/Microsoft*" and
  not process.args :
      "/Volumes/Google Chrome/Google*/Resources/",
      "/Users/*/Library/Application Support/Google/Chrome/recovery/*/ChromeRecovery",