IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Mounting Hidden or WebDav Remote Shares Mshta Making Network Connections »
Elastic Docs ›Elastic Security Solution [8.1] ›Detections and alerts ›Prebuilt rule reference

MsBuild Making Network Connections

edit

MsBuild Making Network Connections

edit

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:

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

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Maximum alerts per execution: 100

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Defense Evasion

Version: 8 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.16.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

edit
sequence by process.entity_id [process where process.name :
"MSBuild.exe" and event.type == "start"] [network where process.name
: "MSBuild.exe" and not cidrmatch(destination.ip, "127.0.0.1",
"::1")]

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 8 (7.16.0 release)
  • Formatting only
Version 7 (7.12.0 release)
  • Formatting only
Version 6 (7.11.0 release)
  • Formatting only
Version 5 (7.10.0 release)

  • Updated query, changed from:

    event.category:network and event.type:connection and
process.name:MSBuild.exe and not destination.ip:(127.0.0.1 or "::1")
Version 4 (7.9.1 release)
  • Formatting only
Version 3 (7.9.0 release)

  • Updated query, changed from:

    event.action:"Network connection detected (rule: NetworkConnect)" and
process.name:MSBuild.exe and not destination.ip:(127.0.0.1 or "::1")
Version 2 (7.7.0 release)

  • Updated query, changed from:

    event.action:"Network connection detected (rule: NetworkConnect)" and
process.name:MSBuild.exe and not destination.ip:("127.0.0.1" or "::1")
« Mounting Hidden or WebDav Remote Shares Mshta Making Network Connections »