FIN7 Cybercrime Group: Evolution from POS Attacks to Ransomware-as-a-Service (RaaS) Operations

FIN7 (aka Carbon Spider / GOLD NIAGARA) is a long-running, financially motivated cybercriminal group that evolved from large-scale POS card‑skimming campaigns into targeted ‘big‑game’ ransomware and supply‑chain attacks; the report details its multi-stage, fileless execution techniques (PowerShell, VBS, JavaScript), custom obfuscation and junk‑code tactics, use of fraudulent front companies to recruit contractors, notable intrusions and timelines, ATT&CK TTP mappings, and specific indicators (MD5s, commands) and behaviors for detection and simulation.