A new trojan named TCLBanker, which targets 59 banking, fintech, and cryptocurrency platforms, uses a trojanized MSI installer for Logitech AI Prompt Builder to infect systems. Additionally, the malware includes self-spreading worm modules for WhatsApp and Outlook that automatically infect new victims. The new banking trojan was discovered by Elastic Security Labs, whose researchers believe it’s a major evolution of the older Maverick/Sorvepotel malware family. While TCLBanker currently appears focused in Brazil, specifically checking timezone, keyboard layout, and locale, LATAM malware has, in the past, been updated to broaden its targeting scope, so the risk of the threat expanding is real. Elastic warns that TCLBanker is extremely well protected against analysis and debugging, featuring environment-dependent payload decryption routines that fail in sandboxes or analyst environments. It also runs a persistent watchdog thread that continuously hunts for analysis tools like x64dbg, IDA, dnSpy, Frida, ProcessHacker, Ghidra, de4dot, and others. The malware is loaded within the context of the legitimate Logitech application via DLL side-loading, so it won’t trigger any alarms from security products protecting the infected host. The researchers noted that, while the loader is rich in features, none go very far toward being truly advanced, and code artifacts indicate that AI may have been used in its development.