Disable Administrative Share Creation at Startup — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-01-16 / 2024-03-25.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 79fb83e8cfdcb4cc212c9644190daf52fd5e586c869c27165855cb7024901ed9

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.

title: Disable Administrative Share Creation at Startup
id: c7dcacd0-cc59-4004-b0a4-1d6cdebe6f3e
status: test
description: Administrative shares are hidden network shares created by Microsoft Windows NT operating systems that grant system administrators remote access to every disk volume on a network-connected system
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md#atomic-test-4---disable-administrative-share-creation-at-startup
author: frack113
date: 2022-01-16
modified: 2024-03-25
tags:
    - attack.stealth
    - attack.t1070.005
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\Services\LanmanServer\Parameters\'
        TargetObject|endswith:
            - '\AutoShareWks'
            - '\AutoShareServer'
        Details: 'DWORD (0x00000000)'
    condition: selection
falsepositives:
    - Unknown
level: medium
regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_disable_administrative_share/info.yml
simulation:
    - type: atomic-red-team
      name: Disable Administrative Share Creation at Startup
      technique: T1070.005
      atomic_guid: 99c657aa-ebeb-4179-a665-69288fdd12b8

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md#atomic-test-4---disable-administrative-share-creation-at-startup