name: Windows Disable Memory Crash Dump
id: 59e54602-9680-11ec-a8a6-acde48001122
version: 1
date: '2022-02-25'
author: Michael Haag, Splunk
status: production
type: TTP
description: The following analytic identifies a process that is attempting to disable
  the ability on Windows to generate a memory crash dump. This was recently identified
  being utilized by HermeticWiper. To disable crash dumps, the value must be set to
  0. This feature is typically modified to perform a memory crash dump when a computer
  stops unexpectedly because of a Stop error (also known as a blue screen, system
  crash, or bug check).
data_source:
- Sysmon Event ID 13
search:
  selection1:
    Details: '0x00000000'
    TargetObject: '*\\CurrentControlSet\\Control\\CrashControl\\CrashDumpEnabled'
  condition: selection1
how_to_implement: To successfully implement this search you need to be ingesting information
  on process that include the name of the Filesystem responsible for the changes from
  your endpoints into the `Endpoint` datamodel in the `Filesystem` and `Registry`
  node.
known_false_positives: unknown
references:
- https://blog.talosintelligence.com/2022/02/threat-advisory-hermeticwiper.html
- https://docs.microsoft.com/en-us/troubleshoot/windows-server/performance/memory-dump-file-options
tags:
  analytic_story:
  - Data Destruction
  - Ransomware
  - Hermetic Wiper
  - Windows Registry Abuse
  asset_type: Endpoint
  confidence: 100
  impact: 90
  message: A process $process_name$ was identified attempting to disable memory crash
    dumps on $dest$.
  mitre_attack_id:
  - T1485
  observable:
  - name: user
    type: User
    role:
    - Victim
  - name: dest
    type: Hostname
    role:
    - Victim
  - name: parent_process_name
    type: Process
    role:
    - Parent Process
  - name: process_name
    type: Process
    role:
    - Child Process
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  risk_score: 90
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/hermetic_wiper/sysmon.log
    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
    sourcetype: xmlwineventlog