title: Potential SNAKE Malware Persistence Service Execution
id: f7536642-4a08-4dd9-b6d5-c3286d8975ed
status: test
description: Detects a specific child/parent process relationship indicative of a "WerFault" process running from the "WinSxS" as a service. This could be indicative of potential SNAKE malware activity as reported by CISA.
references:
    - https://media.defense.gov/2023/May/09/2003218554/-1/-1/0/JOINT_CSA_HUNTING_RU_INTEL_SNAKE_MALWARE_20230509.PDF
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-04
tags:
    - attack.execution
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\services.exe'
        Image|startswith: 'C:\Windows\WinSxS\'
        Image|endswith: '\WerFault.exe'
    condition: selection
falsepositives:
    - Unknown
level: high