Suspicious TCP Tunnel Via PowerShell Script
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About the rule
Rule Type
Standard
Rule Description
Detects powershell scripts that creates sockets/listeners which could be indicative of tunneling activity
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "PowerShell Script Block Logged" AND SCRIPTEXECUTED contains "[System.Net.HttpWebRequest]" AND SCRIPTEXECUTED contains "System.Net.Sockets.TcpListener" AND SCRIPTEXECUTED contains "AcceptTcpClient" select Action1.HOSTNAME,Action1.MESSAGE,Action1.SCRIPTEXECUTED
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
