Microsoft Exchange Transport Agent Install Scriptedit

Identifies the use of Cmdlets and methods related to Microsoft Exchange Transport Agents install. Adversaries may leverage malicious Microsoft Exchange Transport Agents to execute tasks in response to adversary-defined criteria, establishing persistence.

Rule type: query

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None


  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Persistence
  • Data Source: PowerShell Logs
  • Rule Type: BBR

Version: 2

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

event.category: "process" and host.os.type:windows and
  powershell.file.script_block_text : (
    "Install-TransportAgent" or
  ) and not : "S-1-5-18"