RestrictedAdminMode Registry Value Tampering

Description

Detects changes to the "DisableRestrictedAdmin" registry value in order to disable or enable RestrictedAdmin mode. RestrictedAdmin mode prevents the transmission of reusable credentials to the remote system to which you connect using Remote Desktop. This prevents your credentials from being harvested during the initial connection process if the remote server has been compromise

Query · sigma

selection:
  TargetObject|endswith: System\CurrentControlSet\Control\Lsa\DisableRestrictedAdmin
condition: selection

Known false positives

  • Unknown
Raw source RestrictedAdminMode Registry Value Tampering · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: RestrictedAdminMode Registry Value Tampering
id: d6ce7ebd-260b-4323-9768-a9631c8d4db2
related:
    - id: 28ac00d6-22d9-4a3c-927f-bbd770104573 # process_creation
      type: similar
status: test
description: |
    Detects changes to the "DisableRestrictedAdmin" registry value in order to disable or enable RestrictedAdmin mode.
    RestrictedAdmin mode prevents the transmission of reusable credentials to the remote system to which you connect using Remote Desktop.
    This prevents your credentials from being harvested during the initial connection process if the remote server has been compromise
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/a8e3cf63e97b973a25903d3df9fd55da6252e564/atomics/T1112/T1112.md
    - https://social.technet.microsoft.com/wiki/contents/articles/32905.remote-desktop-services-enable-restricted-admin-mode.aspx
author: frack113
date: 2023-01-13
modified: 2024-08-23
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    product: windows
    category: registry_set
detection:
    selection:
        TargetObject|endswith: 'System\CurrentControlSet\Control\Lsa\DisableRestrictedAdmin'
    condition: selection
falsepositives:
    - Unknown
level: high

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