MsBuild Network Connection Sequence

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Identifies MsBuild.exe making outbound network connections. This may indicate adversarial activity as MsBuild is often leveraged by adversaries to execute code and evade detection.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*
  • winlogbeat-*
  • 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: None

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Defense Evasion
  • Data Source: Elastic Defend

Version: 1

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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/* duplicate of MsBuild Making Network Connections - 0e79980b-4250-4a50-a509-69294c14e84b */

sequence by process.entity_id
  [process where host.os.type == "windows" and event.type == "start" and process.name : "MSBuild.exe"]
  [network where host.os.type == "windows" and process.name : "MSBuild.exe" and
     not (destination.ip == "127.0.0.1" and source.ip == "127.0.0.1")]

Framework: MITRE ATT&CKTM