At this point, the attacker installs cryptocurrency miners, deploys ransomware, or sells SSH access on dark web forums. The b374k.php file acts as a persistent backdoor, surviving OS reinstalls as long as the web application remains.
To prevent unauthorized use of web shells: b374k.php
Security teams monitor web server logs for requests to suspicious file names like b374k.php or b374k-mini-shell-php.php . At this point, the attacker installs cryptocurrency miners,
Run system commands (via terminal) or execute scripts in languages like Python, Perl, Ruby, Java, and Node.js Database Connectivity: Connect to and manage databases including MySQL, MSSQL, Oracle, and PostgreSQL through an integrated SQL Explorer. Networking Tools: Establish bind or reverse shells Run system commands (via terminal) or execute scripts
Web shells often contain heavily obfuscated code (e.g., long strings of base64 encoded data) to hide their logic from scanners. A typical characteristic includes calls to eval() , base64_decode() , or gzinflate() combined with complex string manipulation.