is a malicious archive file sent via Facebook Messenger. It is part of a sophisticated phishing attack originating from Vietnamese-based threat actors. The file is small, often heavily obfuscated to bypass security filters, and contains a multi-stage Python-based stealer . How the Scam Works

You receive a message on your Facebook Business page. These often look like customer complaints , product inquiries, or fake warnings about policy violations.

If you get a message about a "policy violation," check your Facebook Account Quality dashboard instead of clicking links in a message.

Below is a complete blog post detailing this threat, its mechanics, and how to stay protected.

Educate your social media managers about the hallmarks of phishing , such as urgent language and requests for sensitive data.

🛡️ The 54438.rar Threat: How This Tiny File Hijacks Facebook Business Accounts

Facebook Messenger is a common vector for malware. If a "customer" sends a .rar , .zip , or .exe file, treat it as a red flag.

By stealing session cookies, the attackers can bypass Two-Factor Authentication (2FA) and take full control of your Facebook account. Why are they targeting Business Accounts?