Ngrok Usage with Remote Desktop Service

calendar Oct 17, 2023 · attack.command_and_control attack.t1090  ·
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Detects cases in which ngrok, a reverse proxy tool, forwards events to the local RDP port, which could be a sign of malicious behaviour

Sigma rule (View on GitHub)

 1title: Ngrok Usage with Remote Desktop Service
 2id: 64d51a51-32a6-49f0-9f3d-17e34d640272
 3status: test
 4description: Detects cases in which ngrok, a reverse proxy tool, forwards events to the local RDP port, which could be a sign of malicious behaviour
 5references:
 6    - https://twitter.com/tekdefense/status/1519711183162556416?s=12&t=OTsHCBkQOTNs1k3USz65Zg
 7    - https://ngrok.com/
 8author: Florian Roth (Nextron Systems)
 9date: 2022/04/29
10tags:
11    - attack.command_and_control
12    - attack.t1090
13logsource:
14    product: windows
15    service: terminalservices-localsessionmanager
16detection:
17    selection:
18        EventID: 21
19        Address|contains: '16777216'
20    condition: selection
21falsepositives:
22    - Unknown
23level: high

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