Terminal Server Client Connection History Cleared - Registry

Description

Detects the deletion of registry keys containing the MSTSC connection history

Query · sigma

selection1:
  EventType: DeleteValue
  TargetObject|contains: \Microsoft\Terminal Server Client\Default\MRU
selection2:
  EventType: DeleteKey
  TargetObject|contains: \Microsoft\Terminal Server Client\Servers\
condition: 1 of selection*

Known false positives

  • Unknown
Raw source Terminal Server Client Connection History Cleared - Registry · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Terminal Server Client Connection History Cleared - Registry
id: 07bdd2f5-9c58-4f38-aec8-e101bb79ef8d
status: test
description: Detects the deletion of registry keys containing the MSTSC connection history
references:
    - https://learn.microsoft.com/en-us/troubleshoot/windows-server/remote/remove-entries-from-remote-desktop-connection-computer
    - http://woshub.com/how-to-clear-rdp-connections-history/
    - https://www.trendmicro.com/en_us/research/23/a/vice-society-ransomware-group-targets-manufacturing-companies.html
author: Christian Burkard (Nextron Systems)
date: 2021-10-19
modified: 2023-02-08
tags:
    - attack.persistence
    - attack.stealth
    - attack.defense-impairment
    - attack.t1070
    - attack.t1112
logsource:
    category: registry_delete
    product: windows
detection:
    selection1:
        EventType: DeleteValue
        TargetObject|contains: '\Microsoft\Terminal Server Client\Default\MRU'
    selection2:
        EventType: DeleteKey
        TargetObject|contains: '\Microsoft\Terminal Server Client\Servers\'
    condition: 1 of selection*
falsepositives:
    - Unknown
level: high

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