Hijack Legit RDP Session to Move Laterally

Detects the usage of tsclient share to place a backdoor on the RDP source machine's startup folder

Sigma rule (View on GitHub)

 1title: Hijack Legit RDP Session to Move Laterally
 2id: 52753ea4-b3a0-4365-910d-36cff487b789
 3status: test
 4description: Detects the usage of tsclient share to place a backdoor on the RDP source machine's startup folder
 5author: Samir Bousseaden
 6references:
 7    - Internal Research
 8date: 2019-02-21
 9modified: 2021-11-27
10tags:
11    - attack.command-and-control
12    - attack.t1219
13logsource:
14    product: windows
15    category: file_event
16detection:
17    selection:
18        Image|endswith: '\mstsc.exe'
19        TargetFilename|contains: '\Microsoft\Windows\Start Menu\Programs\Startup\'
20    condition: selection
21falsepositives:
22    - Unlikely
23level: high

References

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