?>
These scripts are designed to be hosted on compromised websites, free hosting services, or specially created domains designed to impersonate Facebook. The Role of post.php
Understanding how this code functions is vital for web administrators, security analysts, and developers working to defend applications against credential theft. What is a Phishing Kit? facebook phishing postphp code
Sending these credentials to the attacker's email, a text file on the server, or a remote C2 (Command and Control) server.
// Configuration $fb_post_url = 'https://www.facebook.com/'; $fake_url = 'http://example.com/fb_verify.php'; $login_label = 'Verify Your Account'; $error_message = 'Invalid credentials. Please try again.'; Sending these credentials to the attacker's email, a
To minimize suspicion, the script executes a header redirect (e.g., header("Location: https://facebook.com"); ). The victim is sent to the actual Facebook website, often believing they simply mistyped their password the first time. Conceptual Code Structure (Malicious Logic)
To bypass location-based security alerts or multi-factor authentication (MFA), advanced scripts harvest metadata about the victim’s environment. This includes tracking IP addresses and browser profiles. The victim is sent to the actual Facebook
Attackers send messages (via Messenger, email, or a fraudulent post) claiming the user's account is suspended, they have won a prize, or they need to view a sensitive document.
Facebook remains the most impersonated brand in phishing attacks. This paper dissects a prevalent technique: phishing kits hosted on compromised servers that use a file named post.php to capture login credentials. We analyze the code structure, exfiltration methods, evasion tactics, and propose detection rules (SIGMA/YARA) and server-side countermeasures. Empirical analysis of 150 live phishing kits reveals that 83% use predictable POST handlers like post.php with minimal obfuscation. We conclude with a deployable response framework.
: Incorporating arrays of known IP address ranges belonging to security vendors, hosting providers, Google crawlers, and Facebook's internal infrastructure. If a visiting IP matches the blacklist, post.php drops the connection or displays a benign 404 page rather than executing the credential-harvesting logic. Defensive Strategies and Remediation
: Some scripts implement JavaScript or PHP-based loading screens (e.g., a 5-second delay) to make the login process feel authentic to the user. Common Phishing Scenarios on Facebook
