security_content/dev/endpoint/disabling_norun_windows_app.yml at develop · codingWithJimmy/security_content · GitHub

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name: Disabling NoRun Windows App
id: de81bc46-9213-11eb-adc9-acde48001122
version: 2
date: '2022-01-28'
author: Teoderick Contreras, Splunk
status: production
type: TTP
description: This search is to identify modification of registry to disable run application
  in window start menu. this application is known to be a helpful shortcut to windows
  OS user to run known application and also to execute some reg or batch script. This
  technique is used malware to make cleaning of its infection more harder by preventing
  known application run easily through run shortcut.
data_source:
- Sysmon Event ID 13
search:
  selection1:
    Details: '0x00000001'
    TargetObject: '*\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\NoRun'
  condition: selection1
how_to_implement: To successfully implement this search you need to be ingesting information
  on process that include the name of the process responsible for the changes from
  your endpoints into the `Endpoint` datamodel in the `Registry` node. Also make sure
  that this registry was included in your config files ex. sysmon config to be monitored.
known_false_positives: admin may disable this application for non technical user.
references:
- https://any.run/report/ea4ea08407d4ee72e009103a3b77e5a09412b722fdef67315ea63f22011152af/a866d7b1-c236-4f26-a391-5ae32213dfc4#registry
- https://blog.malwarebytes.com/detections/pum-optional-norun/
tags:
  analytic_story:
  - Windows Defense Evasion Tactics
  - Windows Registry Abuse
  asset_type: Endpoint
  confidence: 50
  impact: 50
  message: The Windows registry was modified to disable run application in window
    start menu on $dest$ by $user$.
  mitre_attack_id:
  - T1562.001
  - T1562
  observable:
  - name: user
    type: User
    role:
    - Victim
  - name: dest
    type: Hostname
    role:
    - Victim
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  risk_score: 25
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-security.log
    source: WinEventLog:Security
    sourcetype: WinEventLog
    update_timestamp: true
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-system.log
    source: WinEventLog:System
    sourcetype: WinEventLog
    update_timestamp: true
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-sysmon.log
    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
    sourcetype: xmlwineventlog