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The Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the Department of the Health and Human Services (HHS) released a joint Cybersecurity Advisory (CSA) with technical details associated with Hive ransomware variants identified through FBI investigations as recently as November 2022.
From June 2021 through at least November 2022, threat actors have used Hive ransomware, which follows the Ransomware-as-a-Service (RaaS) model, to target a wide range of businesses and critical infrastructure sectors, including government facilities, communications, manufacturing, information technology, and especially organizations in the Healthcare and Public Health (HPH) sector.
The method of initial intrusion depends upon the Hive RaaS affiliate that targets the network, which include using compromised credentials in Remote Desktop Protocol (RDP), virtual private networks (VPNs), and other remote network connection protocols in which multifactor authentication (MFA) is not enabled.
Actions that organizations can take today to mitigate cyber threat to ransomware include:
CISA, FBI and HHS urge all organizations, particularly those in the HPH sector, to apply the recommended mitigations in this CSA to reduce the likelihood of compromise from Hive and other ransomware operations. Victims of ransomware should report the incident to their local FBI field office or CISA.