BeaverTail

BeaverTail is a JavaScript malware primarily distributed through NPM packages. It is designed for information theft and to load further stages of malware, specifically a multi-stage Python-based backdoor known as InvisibleFerret. BeaverTail targets cryptocurrency wallets and credit card information stored in the victim's web browsers. Its code is heavily obfuscated to evade detection. Threat actors can either upload malicious NPM packages containing BeaverTail to GitHub or inject BeaverTail code into legitimate NPM projects. Researchers have identified additional Windows and macOS variants, indicating that the BeaverTail malware family is likely still under development.