Microsoft Build Engine Loading Windows Credential Librariesedit
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: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
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: 8 (version history)
Added (Elastic Stack release): 7.7.0
Last modified (Elastic Stack release): 7.13.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positivesedit
The Build Engine is commonly used by Windows developers but use by non-engineers is unusual.
Rule queryedit
sequence by process.entity_id [process where event.type == "start" and (process.name : "MSBuild.exe" or process.pe.original_file_name == "MSBuild.exe")] [library where dll.name : ("vaultcli.dll", "SAMLib.DLL")]
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: OS Credential Dumping
- ID: T1003
- Reference URL: https://attack.mitre.org/techniques/T1003/
Rule version historyedit
- Version 8 (7.13.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:change and (process.pe.original_file_name:(vaultcli.dll or SAMLib.DLL) or dll.name:(vaultcli.dll or SAMLib.DLL)) and process.name: MSBuild.exe
-
- Version 7 (7.12.0 release)
-
- Formatting only
- Version 6 (7.11.2 release)
-
- Formatting only
- Version 5 (7.11.0 release)
-
-
Updated query, changed from:
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
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- 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)"
-