OpenVPN Connect echo-script ACE: shell spawn or temp script from openvpn parent

Ibrahim Saud@tektrix

•updated Jun 29, 2026•0•0•0

This rule detects suspicious activity originating from an OpenVPN process by correlating the creation of temporary files (common for dropped payloads) with the subsequent execution of shell interpreters (e.g., cmd.exe, powershell.exe, bash) within a 120-second window on the same host. This pattern suggests potential exploitation or post-exploitation activities where OpenVPN is leveraged to drop and execute malicious secondary tools.