The Hunters International Ransomware-as-a-Service (RaaS) operation is shutting down and rebranding with plans to switch to date theft and extortion-only attacks.

As threat intelligence firm Group-IB revealed this week, the cybercrime group remained active despite announcing on November 17, 2024, that it was shutting down due to declining profitability and increased government scrutiny.

Since then, Hunters International has launched a new extortion-only operation known as “World Leaks” on January 1, 2025.

“From the administrator’s perspective, ransomware is no longer profitable and risky. The criminals collaborating with the group will be provided with a purportedly self-developed exfiltration tool designed to automate the process of data exfiltration in the victims’ networks,” Group-IB said on Wednesday.

“Unlike Hunters International, which combined encryption with extortion, World Leaks operates as an extortion-only group using a custom-built exfiltration tool.”

The new tool seems to be an upgraded variant of the Storage Software exfiltration tool that Hunters International’s ransomware affiliates also use.

​Hunters International surfaced in late 2023 and was flagged as a possible rebrand of Hive because of code similarities. Its ransomware targets a wide range of platforms, including Windows, Linux, FreeBSD, SunOS, and ESXi (VMware servers), and it also supports x64, x86, and ARM architectures.

Since its emergence, this ransomware gang has claimed over 280 attacks against organizations worldwide, making it one of the most active ransomware operations.

Notable victims claimed by Hunters International include Tata Technologies, North American automobile dealership AutoCanada, U.S. Marshals Service, Japanese optics giant Hoya, U.S. Navy contractor Austal USA, and Oklahoma’s largest not-for-profit health network, ​​​​Integris Health.

Hunters International also breached the Fred Hutch Cancer Center in December, threatening to leak the stolen data of over 800,000 cancer patients if they weren’t paid.

So far, Hunters International operators have targeted companies of all sizes. BleepingComputer has seen ransom demands ranging from hundreds of thousands to millions of dollars, depending on the breached organization’s size.