The metaencryptor ransomware group listed Promantra, Inc on its data leak site on 2026-09-17. Country: US Sector: Technology Domains named: promantra.us Claim as published on the leak site: ProMantra is a U.S.-based healthcare technology and business process services company specializing in Revenue Cycle Management (RCM), medical billing, healthcare data processing, and automation. Founded in 2003, the company provides technology-enabled services designed to help healthcare providers manage the financial and administrative processes associated with patient care