Windows Shell Process from CrushFTP — Detection Rule
The following analytic identifies instances where CrushFTP's service process (crushftpservice.exe) spawns shell processes like cmd.exe or powershell.exe. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events. This activity is significant because CrushFTP should not normally spawn interactive shell processes during regular operations. If confirmed malicious, this behavior could indicate successful exploitation of vulnerabilities like CVE-2025-31161, potentially allowing attackers to execute arbitrary commands with the privileges of the CrushFTP service.