Ransomware Group Demands Nearly $3 Million

This report documents the discovery and technical analysis of a new ransomware strain called "Underground Team," detailing its 64-bit Visual C/C++ executable (SHA256 provided), use of ShellExecuteW to run commands that delete Volume Shadow Copies and stop MSSQL, volume and file enumeration and selective encryption, dropping of a multi-folder ransom note and a self-deleting CMD cleanup script, and an Onion-based negotiation/ticketing portal; the report includes IOCs, MITRE ATT&CK mappings, and defensive recommendations.