#StopRansomware: Gunra Ransomware
Summary
CISA has issued an advisory regarding the Gunra ransomware, a ransomware-as-a-service (RaaS) variant that emerged in 2025 and expanded into RaaS operations in 2026. Gunra utilizes a double-extortion model, encrypting data and threatening to leak exfiltrated data on a dedicated leak site if ransoms are not paid. The advisory provides technical details and guidance for detection and mitigation.
IFF Assessment
This article discusses the emergence and operation of a new ransomware variant, which poses a direct threat to organizations.
Severity
CISA KEV: Listed as actively exploited. Federal patch due: January 21, 2025. Known ransomware use: Known.
Defender Context
Organizations, particularly in government and critical infrastructure sectors, need to be aware of the Gunra ransomware's tactics, including its double-extortion approach. Implementing robust security measures like patching known exploited vulnerabilities, maintaining offline backups, and segmenting networks are crucial steps to defend against this threat.