Potential Signing Bypass Via Windows Developer Features - Registry

Description

Detects when the enablement of developer features such as "Developer Mode" or "Application Sideloading". Which allows the user to install untrusted packages.

Query · sigma

selection:
  TargetObject|contains:
  - \Microsoft\Windows\CurrentVersion\AppModelUnlock
  - \Policies\Microsoft\Windows\Appx\
  TargetObject|endswith:
  - \AllowAllTrustedApps
  - \AllowDevelopmentWithoutDevLicense
  Details: DWORD (0x00000001)
condition: selection

Known false positives

  • Unknown
Raw source Potential Signing Bypass Via Windows Developer Features - Registry · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Potential Signing Bypass Via Windows Developer Features - Registry
id: b110ebaf-697f-4da1-afd5-b536fa27a2c1
related:
    - id: a383dec4-deec-4e6e-913b-ed9249670848
      type: similar
status: test
description: Detects when the enablement of developer features such as "Developer Mode" or "Application Sideloading". Which allows the user to install untrusted packages.
references:
    - https://twitter.com/malmoeb/status/1560536653709598721
    - https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-12
modified: 2023-08-17
tags:
    - attack.stealth
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains:
            - '\Microsoft\Windows\CurrentVersion\AppModelUnlock'
            - '\Policies\Microsoft\Windows\Appx\'
        TargetObject|endswith:
            - '\AllowAllTrustedApps'
            - '\AllowDevelopmentWithoutDevLicense'
        Details: 'DWORD (0x00000001)'
    condition: selection
falsepositives:
    - Unknown
level: high

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