Detection rules › Sigma
Exchange transport agent installation artifacts (native)
Detects scenarios where an attacker attempts to load an artifact in the Exchange transport agent.
Known false positives
- rare administrator change
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| MSExchange-CmdletLogs | Event ID 1 |
| MSExchange-CmdletLogs | Event ID 6 |
Rule body
title: Exchange transport agent installation artifacts (native)
description: Detects scenarios where an attacker attempts to load an artifact in the Exchange transport agent.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0003-Persistence/T1505-Server%20Software%20Component
- https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook
- https://www.welivesecurity.com/wp-content/uploads/2019/05/ESET-LightNeuron.pdf
tags:
- attack.persistence
- attack.t1505.002 # Server Software Component: Transport Agent
author: mdecrevoisier
status: experimental
logsource:
product: windows
service: msexchange-management
detection:
selection:
EventID:
- 1 # success
- 6 # failure
EventData|contains:
- Enable-TransportAgent
- Install-TransportAgent
condition: selection
falsepositives:
- rare administrator change
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
EventID:
- 1
- 6
EventData|contains:
- Enable-TransportAgent
- Install-TransportAgent
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
EventData | match |
| field:"EventData" kind:match |