Terminal Server Client Connection History Cleared - Registry

Detects the deletion of registry keys containing the MSTSC connection history

Sigma rule (View on GitHub)

 1title: Terminal Server Client Connection History Cleared - Registry
 2id: 07bdd2f5-9c58-4f38-aec8-e101bb79ef8d
 3status: test
 4description: Detects the deletion of registry keys containing the MSTSC connection history
 5references:
 6    - https://docs.microsoft.com/en-us/troubleshoot/windows-server/remote/remove-entries-from-remote-desktop-connection-computer
 7    - http://woshub.com/how-to-clear-rdp-connections-history/
 8    - https://www.trendmicro.com/en_us/research/23/a/vice-society-ransomware-group-targets-manufacturing-companies.html
 9author: Christian Burkard (Nextron Systems)
10date: 2021/10/19
11modified: 2023/02/08
12tags:
13    - attack.defense_evasion
14    - attack.t1070
15    - attack.t1112
16logsource:
17    category: registry_delete
18    product: windows
19detection:
20    selection1:
21        EventType: DeleteValue
22        TargetObject|contains: '\Microsoft\Terminal Server Client\Default\MRU'
23    selection2:
24        EventType: DeleteKey
25        TargetObject|contains: '\Microsoft\Terminal Server Client\Servers\'
26    condition: 1 of selection*
27falsepositives:
28    - Unknown
29level: high

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