HybridConnectionManager Service Installation

Severity: high
Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
Source: upstream

Rule to detect the Hybrid Connection Manager service installation.

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1554` Compromise Host Software Binary

Event coverage

Provider	Event ID	Title
Security-Auditing	4697	A service was installed in the system.

Stages and Predicates

Stage 1: `selection`

ServiceFileName|contains: HybridConnectionManager
ServiceName: HybridConnectionManager

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`ServiceFileName`	match	`HybridConnectionManager`
`ServiceName`	eq	`HybridConnectionManager`

Neighbors

Broader alternatives (more inclusive than this rule)

These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.

CobaltStrike Service Installations - Security [sigma] (drops 2 filters this rule applies) (first-stage match only; downstream stages may differ)
Invoke-Obfuscation Obfuscated IEX Invocation - Security [sigma] (drops 2 filters this rule applies) (first-stage match only; downstream stages may differ)
Meterpreter or Cobalt Strike Getsystem Service Installation - Security [sigma] (drops 2 filters this rule applies) (first-stage match only; downstream stages may differ)
Service Installed By Unusual Client - Security [sigma] (drops 2 filters this rule applies) (first-stage match only; downstream stages may differ)