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Detection rules › Sigma

DPAPI Domain Master Key Backup Attempt

Status
test
Severity
medium
Log source
product windows, service security
Author
Roberto Rodriguez @Cyb3rWard0g
Source
github.com/SigmaHQ/sigma

Detects anyone attempting a backup for the DPAPI Master Key. This events gets generated at the source and not the Domain Controller.

Known false positives

  • If a computer is a member of a domain, DPAPI has a backup mechanism to allow unprotection of the data. Which will trigger this event.

MITRE ATT&CK coverage

TacticTechniques
Credential Access

Telemetry coverage

ProviderRecord / event type
Security-AuditingEvent ID 4692: Backup of data protection master key was attempted.

Rule body

title: DPAPI Domain Master Key Backup Attempt
id: 39a94fd1-8c9a-4ff6-bf22-c058762f8014
status: test
description: Detects anyone attempting a backup for the DPAPI Master Key. This events gets generated at the source and not the Domain Controller.
references:
    - https://threathunterplaybook.com/hunts/windows/190620-DomainDPAPIBackupKeyExtraction/notebook.html
author: Roberto Rodriguez @Cyb3rWard0g
date: 2019-08-10
modified: 2023-03-15
tags:
    - attack.credential-access
    - attack.t1003.004
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 4692
    condition: selection
falsepositives:
    - If a computer is a member of a domain, DPAPI has a backup mechanism to allow unprotection of the data. Which will trigger this event.
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    EventID: 4692