MacOS Emond Launch Daemon — Sigma Rule

Rule metadata and linked tags

Author: Alejandro Ortuno, oscd.community. Source status: test; severity: medium. Source dates: 2020-10-23 / 2021-11-27.

{
  "category": "file_event",
  "product": "macos"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 871b7f4de0eec009f3c2b86a4d0f9d189ef65a3b8493ec12737ba4538f89877a

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: MacOS Emond Launch Daemon
id: 23c43900-e732-45a4-8354-63e4a6c187ce
status: test
description: Detects additions to the Emond Launch Daemon that adversaries may use to gain persistence and elevate privileges.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.014/T1546.014.md
    - https://posts.specterops.io/leveraging-emond-on-macos-for-persistence-a040a2785124
author: Alejandro Ortuno, oscd.community
date: 2020-10-23
modified: 2021-11-27
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1546.014
logsource:
    category: file_event
    product: macos
detection:
    selection_1:
        TargetFilename|contains: '/etc/emond.d/rules/'
        TargetFilename|endswith: '.plist'
    selection_2:
        TargetFilename|contains: '/private/var/db/emondClients/'
    condition: 1 of selection_*
falsepositives:
    - Legitimate administration activities
level: medium

Original YAML and metadata in JSON

False positives

• Legitimate administration activities

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.014/T1546.014.md
• https://posts.specterops.io/leveraging-emond-on-macos-for-persistence-a040a2785124