Incoming DCOM Lateral Movement with ShellBrowserWindow or ShellWindows

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Incoming DCOM Lateral Movement with ShellBrowserWindow or ShellWindows

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Identifies use of Distributed Component Object Model (DCOM) to run commands from a remote host, which are launched via the ShellBrowserWindow or ShellWindows Application COM Object. This behavior may indicate an attacker abusing a DCOM application to stealthily move laterally.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Lateral Movement

Version: 101

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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sequence by host.id with maxspan=5s
 [network where event.type == "start" and process.name : "explorer.exe" and
  network.direction : ("incoming", "ingress") and network.transport == "tcp" and
  source.port > 49151 and destination.port > 49151 and source.ip != "127.0.0.1" and source.ip != "::1"
 ] by process.entity_id
 [process where event.type == "start" and
  process.parent.name : "explorer.exe"
 ] by process.parent.entity_id

Framework: MITRE ATT&CKTM