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HC3: Sector Alert: Rhysida Ransomware

Posted on August 7, 2023 by Dissent

August 4, 2023
TLP:CLEAR
Report: 202308041500

Executive Summary

Rhysida is a new ransomware-as-a-service (RaaS) group that has emerged since May 2023. The group drops an eponymous ransomware via phishing attacks and Cobalt Strike to breach targets’ networks and deploy their payloads. The group threatens to publicly distribute the exfiltrated data if the ransom is not paid. Rhysida is still in early stages of development, as indicated by the lack of advanced features and the program name Rhysida-0.1. The ransomware also leaves PDF notes on the affected folders, instructing the victims to contact the group via their portal and pay in Bitcoin. Its victims are distributed throughout several countries across Western Europe, North and South America, and Australia. They primarily attack education, government, manufacturing, and technology and managed service provider sectors; however, there has been recent attacks against the Healthcare and Public Health (HPH) sector.

Read the full report or download it at https://www.hhs.gov/sites/default/files/rhysida-ransomware-sector-alert-tlpclear.pdf

For related media coverage, see also Authorities Warn Health Sector of Attacks by Rhysida Group

Category: Commentaries and AnalysesHealth DataMalwareOf NoteU.S.

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