Sigma rule: MSExchange Transport Agent Installation - Builtin

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-69055f758c8a, updated 2022-11-27T00:00:00.000Z.

Rule

Title
MSExchange Transport Agent Installation - Builtin
Status
test
Level
medium
Author
Tobias Michalski (Nextron Systems)
Date
2021-06-08
Modified
2022-11-27
File
rules/windows/builtin/msexchange/win_exchange_transportagent.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the Installation of a Exchange Transport Agent

Log source

product
windows
service
msexchange-management

Detection

selection:
    - 'Install-TransportAgent'
condition: selection

False positives (as the rule lists them)

  • Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this.

Tags

  • attack.persistence
  • attack.t1505.002

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/msexchange/win_exchange_transportagent.yml

Sources and licences

  • SigmaHQ

    "MSExchange Transport Agent Installation - Builtin" by Tobias Michalski (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/msexchange/win_exchange_transportagent.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: MSExchange Transport Agent Installation - Builtin",
entity page, dataset version ref-69055f758c8a, updated 2022-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/4fe151c2-ecf9-4fae-95ae-b88ec9c2fca6 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 4fe151c2-ecf9-4fae-95ae-b88ec9c2fca6, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.