Moriya Rootkit File Created

Status: test
Severity: critical
Log source: category file_event, product windows
Author: Bhabesh Raj
Source: github.com/SigmaHQ/sigma

Detects the creation of a file named "MoriyaStreamWatchmen.sys" in a specific location. This filename was reported to be related to the Moriya rootkit as described in the securelist's Operation TunnelSnake report.

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1543.003` Create or Modify System Process: Windows Service
Privilege Escalation	`T1543.003` Create or Modify System Process: Windows Service

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 11: FileCreate

Rule body

title: Moriya Rootkit File Created
id: a1507d71-0b60-44f6-b17c-bf53220fdd88
related:
    - id: 25b9c01c-350d-4b95-bed1-836d04a4f324
      type: derived
status: test
description: Detects the creation of a file named "MoriyaStreamWatchmen.sys" in a specific location. This filename was reported to be related to the Moriya rootkit as described in the securelist's Operation TunnelSnake report.
references:
    - https://securelist.com/operation-tunnelsnake-and-moriya-rootkit/101831
author: Bhabesh Raj
date: 2021-05-06
modified: 2023-05-05
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1543.003
    - detection.emerging-threats
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename: 'C:\Windows\System32\drivers\MoriyaStreamWatchmen.sys'
    condition: selection
falsepositives:
    - Unknown
level: critical

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    TargetFilename: 'C:\Windows\System32\drivers\MoriyaStreamWatchmen.sys'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`TargetFilename`	eq	`C:\Windows\System32\drivers\MoriyaStreamWatchmen.sys`	`field:"TargetFilename" kind:eq value:"C:\Windows\System32\drivers\MoriyaStreamWatchmen.sys"`