OpenSSH Server Listening On Socket

calendar Oct 17, 2023 · attack.lateral_movement attack.t1021.004  ·
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Detects scenarios where an attacker enables the OpenSSH server and server starts to listening on SSH socket.

Sigma rule (View on GitHub)

 1title: OpenSSH Server Listening On Socket
 2id: 3ce8e9a4-bc61-4c9b-8e69-d7e2492a8781
 3status: test
 4description: Detects scenarios where an attacker enables the OpenSSH server and server starts to listening on SSH socket.
 5references:
 6    - https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0008-Lateral%20Movement/T1021.004-Remote%20Service%20SSH
 7    - https://winaero.com/enable-openssh-server-windows-10/
 8    - https://docs.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse
 9    - https://virtualizationreview.com/articles/2020/05/21/ssh-server-on-windows-10.aspx
10    - https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16
11author: mdecrevoisier
12date: 2022/10/25
13tags:
14    - attack.lateral_movement
15    - attack.t1021.004
16logsource:
17    product: windows
18    service: openssh
19detection:
20    selection:
21        EventID: 4
22        process: sshd
23        payload|startswith: 'Server listening on '
24    condition: selection
25falsepositives:
26    - Legitimate administrator activity
27level: medium

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