Suspicious Emond Child Processedit

Identifies the execution of a suspicious child process of the Event Monitor Daemon (emond). Adversaries may abuse this service by writing a rule to execute commands when a defined event occurs, such as system start up or user authentication.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • macOS
  • Threat Detection
  • Persistence

Version: 1

Added (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule queryedit

process where event.type in ("start", "process_started") and
process.parent.name : "emond" and process.name : ( "bash",
"dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish",
"Python", "python*", "perl*", "php*", "osascript",
"pwsh", "curl", "wget", "cp", "mv", "touch", "echo",
"base64", "launchctl")

Threat mappingedit

Framework: MITRE ATT&CKTM