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RestrictedAdminMode Registry Value Tampering — Sigma Rule

Sigma rule d6ce7ebd-260b-4323-9768-a9631c8d4db2. RestrictedAdminMode Registry Value Tampering — Sigma Rule. 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

Rule metadata and linked tags

testhighwindowsregistry_setattack.persistenceattack.defense-impairmentattack.t1112

Author: frack113. Source status: test; severity: high. Source dates: 2023-01-13 / 2024-08-23.

Original logsource
{
  "product": "windows",
  "category": "registry_set"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 8e14c22ebaa3d40d92e87da14955464c5106816f9e0047f89cecdd9e49527494

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

Original Sigma rule YAML, scroll horizontally if needed
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

Original YAML and metadata in JSON

False positives

  • Unknown

Source references

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner or production-validated detector is asserted. Imported procedures remain unvalidated; any bounded lab evidence has its own scope. ATT&CK / Atomic provenance · Detection provenance.