B374k.php
If you are currently seeing any or unrecognized files?
Analysts use YARAify and similar scanning tools to identify the specific code signatures of the b374k shell even if the filename is changed. b374k.php
Security teams monitor web server logs for requests to suspicious file names like b374k.php or b374k-mini-shell-php.php . If you are currently seeing any or unrecognized files
: Look for GET /b374k.php HTTP/1.1 200 in your web server logs. : Look for GET /b374k
The attacker uploads b374k.php (renamed to wp-verify.php ) to /var/www/html/wp-includes/ or /images/ . They then navigate to: https://victim.com/images/wp-verify.php If the server processes PHP, the shell loads immediately. No authentication is required by default (though a hardcoded password can be set during compilation).
The authorities were notified, and they were able to track down the attacker. It turned out that the attacker was a young hacker who had been using the b374k.php shell to gain access to servers and steal sensitive data.
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