Suspicious MSExchange Transport Agent Deployment - Builtin (via msexchange-management)

This rule detects the Installation of a Exchange Transport Agent

SigmamediumWindowsv1
sigma
title: Suspicious MSExchange Transport Agent Deployment - Builtin (via msexchange-management)
id: de299cae-da79-5a6f-92f0-ed07a9f2fdf8
status: stable
description: This rule detects the Installation of a Exchange Transport Agent
references:
    - https://attack.mitre.org/techniques/T1505/002/
    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=7
author: Huntrule Team
date: 2026-06-07
tags:
    - attack.persistence
    - attack.t1505.002
logsource:
    product: windows
    service: msexchange-management
detection:
    selection:
        - 'Install-TransportAgent'
    condition: selection
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.