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Add PermitLocalCommand technique to ssh.exe (#526) #532

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Add PermitLocalCommand technique to ssh.exe (#526) #532

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16 changes: 16 additions & 0 deletions yml/OSBinaries/Ssh.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,15 @@ Commands:
Tags:
- Execute: DLL
- Execute: Remote
- Command: ssh.exe -o "StrictHostKeyChecking=no" -o "PermitLocalCommand=yes" -o "LocalCommand=cmd.exe /q /c {CMD}" -q user@host
Description: Executes specified local command using the PermitLocalCommand and LocalCommand options upon initiating an SSH session. Can be used for defense evasion.
Usecase: Execute arbitrary local command via legitimate Windows OpenSSH client.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows 10, Windows 11, Windows Server 2019, Windows Server 2022
Tags:
- Execute: CMD
Full_Path:
- Path: c:\windows\system32\OpenSSH\ssh.exe
Code_Sample:
Expand All @@ -40,10 +49,17 @@ Detection:
- Sigma: https://github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_lolbin_ssh.yml
- IOC: Event ID 4624 with process name C:\Windows\System32\OpenSSH\sshd.exe.
- IOC: command line arguments specifying execution.
- IOC: ssh.exe process creation containing PermitLocalCommand or LocalCommand in command line.
- IOC: ssh.exe spawning child processes such as cmd.exe or msiexec.exe.
Resources:
- Link: https://gtfobins.github.io/gtfobins/ssh/
- Link: https://gist.github.com/screetsec/97d90750bfb058eb0b49c5374cdc0ac9
- Link: https://www.microsoft.com/en-us/security/blog/2026/09/29/star-blizzard-refines-phishing-and-malware-delivery-with-the-redflick-technique/
Acknowledgement:
- Person: Akshat Pradhan
- Person: Felix Boulet
- Person: Edo Maland
- Person: Will Dormann
Handle: '@wdormann'
- Person: Yared Henriquez
Handle: '@DevCop95'
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