Sigma Rule Library

Potential Signing Bypass Via Windows Developer Features

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

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Detection logic

selection_img

- Image|endswith: \SystemSettingsAdminFlows.exe
- OriginalFileName: SystemSettingsAdminFlows.EXE

selection_flag

CommandLine|contains: TurnOnDeveloperFeatures

selection_options

CommandLine|contains:
  - DeveloperUnlock
  - EnableSideloading

Condition

all of selection_*

Raw YAML

title: Potential Signing Bypass Via Windows Developer Features
id: a383dec4-deec-4e6e-913b-ed9249670848
related:
    - id: b110ebaf-697f-4da1-afd5-b536fa27a2c1
      type: similar
status: test
description: Detects when a user enable developer features such as "Developer Mode" or "Application Sideloading". Which allows the user to install untrusted packages.
references:
    - Internal Research
    - https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-11
tags:
    - attack.stealth
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\SystemSettingsAdminFlows.exe'
        - OriginalFileName: 'SystemSettingsAdminFlows.EXE'
    selection_flag:
        CommandLine|contains: 'TurnOnDeveloperFeatures'
    selection_options:
        CommandLine|contains:
            - 'DeveloperUnlock'
            - 'EnableSideloading'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

False positives

  • Unknown

References

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