The Tycoon 2FA phishing kit has adopted several new evasion techniques aimed at slipping past endpoints and detection systems. These include using a custom CAPTCHA rendered via HTML5 canvas, invisible Unicode characters in obfuscated JavaScript, and anti-debugging scripts to thwart inspection.

This blog takes a closer look at these methods to better understand how this kit is evolving and what defenders should be aware of.

 

1. Obfuscation Using Invisible Unicode Characters and Proxies

Lately, the Tycoon 2FA landing pages have incorporated a clever obfuscation technique using invisible Unicode characters. This technique, when paired with JavaScript Proxy objects, is designed to complicate static analysis and defer script execution until runtime.