Visual Studio Code Tunnel Shell Execution
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About the rule
Rule Type
Standard
Rule Description
Detects the execution of a shell (powershell, bash, wsl...) via Visual Studio Code tunnel. Attackers can abuse this functionality to establish a C2 channel and execute arbitrary commands on the system.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PARENTPROCESSNAME contains "\servers\Stable-" AND PARENTPROCESSNAME endswith "\server\node.exe" AND PARENTPROCESSCOMMANDLINE contains ".vscode-server") AND ((PROCESSNAME endswith "\powershell.exe,\pwsh.exe" AND COMMANDLINE contains "\terminal\browser\media\shellIntegration.ps1") OR PROCESSNAME endswith "\wsl.exe,\bash.exe") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
