Suspicious RazerInstaller Explorer Subprocess

title: Suspicious RazerInstaller Explorer Subprocess
id: a4eaf250-7dc1-4842-862a-5e71cd59a167
status: test
description: Detects a explorer.exe sub process of the RazerInstaller software which can be invoked from the installer to select a different installation folder but can also be exploited to escalate privileges to LOCAL SYSTEM
references:
    - https://twitter.com/j0nh4t/status/1429049506021138437
    - https://streamable.com/q2dsji
author: Florian Roth (Nextron Systems), Maxime Thiebaut
date: 2021-08-23
modified: 2024-12-01
tags:
    - attack.privilege-escalation
    - attack.defense-impairment
    - attack.t1553
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\RazerInstaller.exe'
        IntegrityLevel:
            - 'System'
            - 'S-1-16-16384' # System
    filter_main_razer:
        Image|startswith: 'C:\Windows\Installer\Razer\Installer\'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - User selecting a different installation folder (check for other sub processes of this explorer.exe process)
level: high