B374k.php Jun 2026

As of 2025, b374k.php is over a decade old. Why hasn't it died? The answer is simple: There are millions of servers running PHP 5.6 (end-of-life in 2018) with outdated WordPress plugins. For attackers, b374k is a reliable, well-documented, "set it and forget it" tool.

Typical infection chain:

A built-in task manager to view and kill active system processes. Security and Usage Authentication: Access is password-protected; the default password is often , though it is usually changed by the person deploying it. Customisation: b374k.php

Look for the first GET request to that file. The source IP address is the attacker’s (though likely a VPN/proxy). Also look for POST requests after the GET – that shows what commands they ran. As of 2025, b374k

Ability to upload, download, edit, and delete files on the server. Command Execution: For attackers, b374k is a reliable, well-documented, "set