Grandoreiro Malware: An Evolving Threat to Banking Customers
Grandoreiro is a malware family classified as a backdoor and spyware, first seen in April 2020, and is consistently described as a banking trojan focused on credential theft, remote fraud enablement, and control of compromised Windows systems. It has remained active through recurring campaigns, including a renewed wave in May and June 2026 that concentrated heavily on Latin America, especially Mexico, while also reaching parts of Europe and North America.