Gunra Ransomware Expands With Powerful Linux Variant
Gunra ransomware has unveiled a sophisticated Linux variant, marking a significant expansion beyond its original Windows-focused operations. First observed in April 2025, this strain demonstrates advanced capabilities such as running up to 100 encryption threads in parallel, supporting partial encryption, and allowing attackers to control how much of a file is encrypted. Unlike traditional ransomware, the Linux version forgoes ransom notes in favour of rapid, customizable encryption, with the option of storing RSA-encrypted keys in separate keystore files. Victims already span industries including healthcare, manufacturing, IT, law, and agriculture, across regions such as Brazil, Canada, Japan, South Korea, and the United States.
The group, which made headlines earlier this year for leaking 40 terabytes of hospital data, is clearly positioning itself for broader cross‑platform reach. Security agencies and experts warn that Gunra’s technical innovations in speed and configurability highlight an ongoing trend of ransomware groups adapting to exploit enterprise Linux environments. To mitigate risk, organizations are urged to strengthen asset visibility, enforce rigorous patching, conduct red‑team exercises, and leverage advanced AI‑powered threat detection platforms.
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