Grandoreiro (Windows Banking Trojan)
Takeaway: A mature, Delphi‑based banking trojan active since 2016, now using DLL side‑loading, P2P communications, and anti‑analysis techniques to steal banking credentials across 45+ countries. What it is A Windows banking trojan targeting thousands of financial institutions globally. Active since 2016 , continuously updated, and operated as Malware‑as‑a‑Service (MaaS) . Recent Campaigns (2024–2026) Targeting Spain, Portugal, Mexico , and expanding globally after law‑enforcement pressure. Distributed via phishing emails with malicious links or ZIP/VBS loaders. Uses DLL side‑loading through legitimate software to evade detection. Incorporates CAPTCHA checks to resist sandboxing and automated analysis. Technical Capabilities Credential theft for banks and fintechs (Santander, Revolut, Wise, etc.). DLL side‑loading using Delphi‑built DLLs (e.g., mingwm10.dll , libwebp.dll ). P2P/WebRTC communications using STUN/ICE to blend into noisy conferencing traffic. Anti‑analysis : o...