Inside Brazil’s Financial Malware Ecosystem: Deep Dive into the Eternidade Stealer

This post is the first analysis in a trilogy that I will be producing over the coming weeks and months. In it, I will conduct an in-depth examination of the infection chains and the Brazilian banking malware ecosystem , specifically Eternidade Stealer , Astaroth , and Grandoreiro , that were observed in operation during the same period ( the first or second half of 2026 ). The goal of this trilogy is to provide the community with a comprehensive technical knowledge regarding…

Diamond Model