Generic WebShell Analyzer
The WebShell Analyzer is designed to detect suspicious Web Shells, which are scripts allowing remote server access and control. Typically deployed as web-based interfaces, webshells act like a shell environment and are developed in various scripting languages like PHP, ASP, JSP, Python, and Perl, depending on server compatibility.
Webshells are a significant threat due to several reasons:
Remote Access and Control: They grant attackers a robust platform to remotely execute commands, manage files, and access databases through a browser.
Stealth: Webshells often mimic legitimate server files in name and appearance, and may contain obfuscated code to evade detection.
Versatility: They can be utilized for various malicious purposes, including data theft, server defacement, or as a base for broader attacks.
Authentication Bypass: Webshells enable direct server system access, circumventing standard authentication.
Network Pivot Point: Attackers can use a compromised server as a base to infiltrate and exploit other network systems.
Persistent Access: Webshells can provide ongoing access, even after the initial vulnerability is patched, unless detected and removed.
Webshells are typically uploaded via:
Exploiting vulnerabilities in web applications, like file upload flaws.
Utilizing weak or default administrative credentials for file uploads.
Gaining FTP or SSH access to directly upload the webshell.
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