Global Phishing Campaign Using Lua-Disguised Font Files
Score: 9/10

Global Phishing Campaign Using Lua-Disguised Font Files

A global campaign uses heavily obfuscated JScript and AutoIt/Lua-based loaders disguised as .ttf files to deploy multiple RATs and infostealers via fileless execution.

Executive Summary

Since late March 2026, a high-scale global phishing campaign dubbed 'The TTF Trap' has been targeting organizations by impersonating reputable brands for business collaboration. The campaign is notable for its sophisticated multi-stage execution chain designed to bypass detection through fileless techniques and the use of unconventional scripting environments like LuaJIT and AutoIt.

The attack flow utilizes heavily obfuscated JScript droppers that establish persistence and drop a legitimate interpreter alongside a malicious script disguised with a .ttf extension. This script acts as a secondary loader, employing complex decryption routines and anti-analysis features such as decoy memory allocation and Vectored Exception Handling (VEH) to inject shellcode. The campaign primarily distributes Remote Access Trojans (RATs) and infostealers, including Remcos, Agent Tesla, XWorm, and a specific variant of Snake Keylogger branded as 'Best Private LOGGER'.

This threat poses a high risk due to its ability to achieve full remote administrative control and facilitate extensive data exfiltration while maintaining a low detection profile through continuous updates and evasion-heavy tradecraft.

Key Details

Threat Name

Snake Keylogger Best Private LOGGER Variant

Affects

—

Adversary

—

Malware/Tools

Agent Tesla, Remcos, XWorm, Best Private LOGGER, Snake Keylogger, Donut, Formbook

Report Score

9out of 10
Quality Score
Excellent
IOC Quality9
TTP Details9
Detection Guidance6
Enterprise Relevance8
Clarity & Structure10
Technical Depth9

Sources