Potential Provisioning Registry Key Abuse For Binary Proxy Execution - REG

Hunt Hypothesis

Detects potential abuse of the provisioning registry key for indirect command execution through “Provlaunch.exe”.

Detection Rule

Sigma (Original)

title: Potential Provisioning Registry Key Abuse For Binary Proxy Execution - REG
id: 7021255e-5db3-4946-a8b9-0ba7a4644a69
related:
    - id: 7f5d1c9a-3e83-48df-95a7-2b98aae6c13c # CLI Generic
      type: similar
    - id: f9999590-1f94-4a34-a91e-951e47bedefd # CLI Abuse
      type: similar
    - id: 2a4b3e61-9d22-4e4a-b60f-6e8f0cde6f25 # CLI Registry
      type: similar
status: test
description: Detects potential abuse of the provisioning registry key for indirect command execution through "Provlaunch.exe".
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Provlaunch/
    - https://twitter.com/0gtweet/status/1674399582162153472
author: Swachchhanda Shrawan Poudel
date: 2023-08-02
modified: 2023-08-17
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: registry_set
    product: windows
    definition: 'Requirements: The registry key "\SOFTWARE\Microsoft\Provisioning\Commands\" and its subkey must be monitored'
detection:
    selection:
        TargetObject|contains: '\SOFTWARE\Microsoft\Provisioning\Commands\'
    condition: selection
falsepositives:
    - Unknown
level: high

KQL (Azure Sentinel)

imRegistry
| where RegistryKey endswith "\\SOFTWARE\\Microsoft\\Provisioning\\Commands*"

KQL (Microsoft 365 Defender)

DeviceRegistryEvents
| where RegistryKey endswith "\\SOFTWARE\\Microsoft\\Provisioning\\Commands*"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Technique: T1218 — T1218

References

• https://lolbas-project.github.io/lolbas/Binaries/Provlaunch/
• https://twitter.com/0gtweet/status/1674399582162153472
• SigmaHQ Rule