Windows File Create/Write Indicator for SNAKE Kernel Driver (Comadmin.dat)

title: Windows File Create/Write Indicator for SNAKE Kernel Driver (Comadmin.dat)
id: d7b77d75-c53d-4e53-9ca3-d761c0ef5b62
status: test
description: This rule flags file activity targeting the Windows system path file C:\Windows\System32\Com\Comadmin.dat, which is used as an indicator associated with SNAKE malware kernel driver behavior. Attackers may place or modify this file to support installation or persistence at the kernel-driver level. The detection relies on file event telemetry that includes the target filename/path for Windows file operations.
references:
  - https://media.defense.gov/2023/May/09/2003218554/-1/-1/0/JOINT_CSA_HUNTING_RU_INTEL_SNAKE_MALWARE_20230509.PDF
  - https://github.com/SigmaHQ/sigma/blob/master/rules-emerging-threats/2023/Malware/SNAKE/file_event_win_malware_snake_encrypted_payload_ioc.yml
author: Nasreddine Bencherchali (Nextron Systems), Huntrule Team
date: 2023-05-10
tags:
  - attack.execution
  - detection.emerging-threats
logsource:
  category: file_event
  product: windows
detection:
  selection:
    TargetFilename: C:\Windows\System32\Com\Comadmin.dat
  condition: selection
falsepositives:
  - Unlikely
level: critical
license: DRL-1.1
related:
  - id: d6d9d23f-69c1-41b5-8305-fa8250bd027f
    type: derived