Thursday, August 28, 2025

Ryuk ransomware distribution

From Advintel.io, now part of Redsense:

"The group behind Ryuk ransomware distribution, referenced as "one" continues to target various industries including healthcare relying on BazarBackdoor. Currently, the healthcare and social services targeting comprises 13.36% of the total victim by industries."

Ryuk “one” Adversary Dossier

  • Average Payment: 48 Bitcoin
  • Largest Confirmed Payment: 2,200 Bitcoin
  • Crime Salary: Over $150 Million in Bitcoin
  • Psychology Type: Tough Negotiator, Rare Leniency
  • Actor Origin: Russian-speaking Eastern Europe
  • Reliability: High
  • Recent Sector Breach Activities:
  • Technology
  • Healthcare
  • Energy
  • Financial services
  • Government
October, 2021

https://web.archive.org/web/20230208190313/https://www.advintel.io/post/anatomy-of-attack-inside-bazarbackdoor-to-ryuk-ransomware-one-group-via-cobalt-strike