HybridConnectionManager Service Installation — Sigma Rule

Rule metadata and linked tags

Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research). Source status: test; severity: high. Source dates: 2021-04-12 / 2022-10-09.

{
  "product": "windows",
  "service": "security",
  "definition": "The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3ab7a94e6f4ce0342a007c59fb09badb27af78a46eb7ec2554cbbfc2887c028a

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: HybridConnectionManager Service Installation
id: 0ee4d8a5-4e67-4faf-acfa-62a78457d1f2
status: test
description: Rule to detect the Hybrid Connection Manager service installation.
references:
    - https://twitter.com/Cyb3rWard0g/status/1381642789369286662
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2021-04-12
modified: 2022-10-09
tags:
    - attack.persistence
    - attack.t1554
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceName: HybridConnectionManager
        ServiceFileName|contains: HybridConnectionManager
    condition: selection
falsepositives:
    - Legitimate use of Hybrid Connection Manager via Azure function apps.
level: high

Original YAML and metadata in JSON

False positives

• Legitimate use of Hybrid Connection Manager via Azure function apps.

Source references

• https://twitter.com/Cyb3rWard0g/status/1381642789369286662