IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Malware - Prevented - Endpoint Security Microsoft Build Engine Started an Unusual Process »
Elastic Docs ›Elastic Security Solution [7.10] ›Detections and Alerts ›Prebuilt rule reference

Microsoft Build Engine Loading Windows Credential Libraries

edit

Microsoft Build Engine Loading Windows Credential Libraries

edit

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-*
  • logs-endpoint.events.*

Severity: high

Risk score: 73

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
  • Credential Access

Version: 4 (version history)

Added (Elastic Stack release): 7.7.0

Last modified (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Potential false positives

edit

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

Rule query

edit
event.category:process and event.type:change and
(winlog.event_data.OriginalFileName:(vaultcli.dll or SAMLib.DLL) or
dll.name:(vaultcli.dll or SAMLib.DLL)) and process.name: MSBuild.exe

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 4 (7.10.0 release)
  • Formatting only
Version 3 (7.9.1 release)
  • Formatting only
Version 2 (7.9.0 release)

  • Updated query, changed from:

    (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)"
« Malware - Prevented - Endpoint Security Microsoft Build Engine Started an Unusual Process »