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Detection rules › Sigma

HybridConnectionManager Service Installation

Status
test
Severity
high
Log source
product windows, service security
Author
Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
Source
github.com/SigmaHQ/sigma

Rule to detect the Hybrid Connection Manager service installation.

Known false positives

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

MITRE ATT&CK coverage

TacticTechniques
Persistence

Telemetry coverage

ProviderRecord / event type
Security-AuditingEvent ID 4697: A service was installed in the system.

Rule body

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

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    EventID: 4697
    ServiceName: HybridConnectionManager
    ServiceFileName|contains: HybridConnectionManager

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
ServiceFileNamematch
  • HybridConnectionManager
field:"ServiceFileName" kind:match value:"HybridConnectionManager"
ServiceNameeq
  • HybridConnectionManager
field:"ServiceName" kind:eq value:"HybridConnectionManager"