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« Malware - Prevented - Elastic Endpoint Microsoft Build Engine Started an Unusual Process »
Elastic Docs ›SIEM Guide [7.8] ›Detections (beta) ›Prebuilt rule reference

Microsoft Build Engine Loading Windows Credential Libraries

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Microsoft Build Engine Loading Windows Credential Libraries

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An instance of MSBuild, the Microsoft Build Engine, loaded DLLs (dynamically linked libraries) responsible for Windows credential management. This technique is sometimes used for credential dumping.

Rule type: query

Rule indices:

  • winlogbeat-*

Severity: high

Risk score: 73

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

Tags:

  • Elastic
  • Windows

Version: 1

Added (Elastic Stack release): 7.7.0

Potential false positives

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The Build Engine is commonly used by Windows developers but use by non-engineers is unusual.

Rule query

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(winlog.event_data.OriginalFileName: (vaultcli.dll or SAMLib.DLL) or
dll.name: (vaultcli.dll or SAMLib.DLL)) and process.name: MSBuild.exe
and event.action: "Image loaded (rule: ImageLoad)"

Threat mapping

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Framework: MITRE ATT&CKTM

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