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

title: Wow6432Node Windows NT CurrentVersion Autorun Keys Modification
id: 480421f9-417f-4d3b-9552-fd2728443ec8
related:
    - id: 17f878b8-9968-4578-b814-c4217fc5768c
      type: obsolete
status: test
description: Detects modification of autostart extensibility point (ASEP) in registry.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md
    - https://learn.microsoft.com/en-us/sysinternals/downloads/autoruns
    - https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d # a list with registry keys
author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
date: 2019-10-25
modified: 2025-10-22
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1547.001
logsource:
    category: registry_set
    product: windows
detection:
    selection_wow_nt_current_version_base:
        TargetObject|contains: '\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion'
    selection_wow_nt_current_version:
        TargetObject|contains:
            - '\Windows\Appinit_Dlls'
            - '\Image File Execution Options'
            - '\Drivers32'
    filter_main_empty:
        Details: '(Empty)'
    filter_main_null:
        Details: null
    filter_main_file_exec_options:
        Details|endswith: '\Microsoft\Windows NT\CurrentVersion\Image File Execution Options'
    condition: all of selection_* and not 1 of filter_main_*
falsepositives:
    - Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
    - Legitimate administrator sets up autorun keys for legitimate reason
level: medium