sigmamediumHunting

Windows Recall Feature Enabled Via Reg.EXE

Detects the enabling of the Windows Recall feature via registry manipulation. Windows Recall can be enabled by deleting the existing "DisableAIDataAnalysis" value, or setting it to 0. Adversaries may enable Windows Recall as part of post-exploitation discovery and collection activities. This rule assumes that Recall is already explicitly disabled on the host, and subsequently enabled by the adversary.

MITRE ATT&CK

T1113

collection

Detection Query

selection_img:
  - Image|endswith: \reg.exe
  - OriginalFileName: reg.exe
selection_value:
  CommandLine|contains|all:
    - Microsoft\Windows\WindowsAI
    - DisableAIDataAnalysis
selection_action_add:
  CommandLine|contains:
    - add
    - "0"
selection_action_delete:
  CommandLine|contains: delete
condition: selection_img and selection_value and 1 of selection_action_*

Author

Sajid Nawaz Khan

Created

2024-06-02

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.collectionattack.t1113

Raw Content

title: Windows Recall Feature Enabled Via Reg.EXE
id: 817f252c-5143-4dae-b418-48c3e9f63728
related:
    - id: 5dfc1465-8f65-4fde-8eb5-6194380c6a62
      type: similar
    - id: 75180c5f-4ea1-461a-a4f6-6e4700c065d4
      type: similar
status: test
description: |
    Detects the enabling of the Windows Recall feature via registry manipulation.
    Windows Recall can be enabled by deleting the existing "DisableAIDataAnalysis" value, or setting it to 0.
    Adversaries may enable Windows Recall as part of post-exploitation discovery and collection activities.
    This rule assumes that Recall is already explicitly disabled on the host, and subsequently enabled by the adversary.
references:
    - https://learn.microsoft.com/en-us/windows/client-management/manage-recall
    - https://learn.microsoft.com/en-us/windows/client-management/mdm/policy-csp-windowsai#disableaidataanalysis
author: Sajid Nawaz Khan
date: 2024-06-02
tags:
    - attack.collection
    - attack.t1113
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\reg.exe'
        - OriginalFileName: 'reg.exe'
    selection_value:
        # HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\WindowsAI\DisableAIDataAnalysis
        # HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsAI\DisableAIDataAnalysis
        CommandLine|contains|all:
            - 'Microsoft\Windows\WindowsAI'
            - 'DisableAIDataAnalysis'
    selection_action_add:
        CommandLine|contains:
            - 'add'
            - '0'
    selection_action_delete:
        CommandLine|contains: 'delete'
    condition: selection_img and selection_value and 1 of selection_action_*
falsepositives:
    - Legitimate use/activation of Windows Recall
level: medium