The Gentlemen ransomware-as-a-service (RaaS) operation is rapidly gaining notoriety by targeting a wide range of platforms. This includes Windows, Linux, NAS, BSD, and VMware ESXi systems, posing a substantial threat to corporate networks globally. The operation has developed a new locker written in C, specifically designed for hypervisor environments, which enhances its ability to evade defenses and inflict damage.
Emerging around mid-2025, Gentlemen RaaS has quickly established a robust affiliate network. This network allows the operation to distribute its ransomware widely, increasing its reach and impact. The multi-platform design of the ransomware, combined with its strong defense-evasion capabilities, makes it particularly dangerous for organizations that rely on diverse IT environments.
The technical sophistication of Gentlemen RaaS is evident in its use of a C-based locker for hypervisor environments. This approach enables the ransomware to effectively target virtualized systems, which are commonly used in enterprise settings for efficiency and scalability. By compromising these environments, the ransomware can potentially disrupt a wide array of services and applications.
The impact of this ransomware can be severe, as it threatens to encrypt critical data across various platforms. Organizations affected by such attacks may face significant operational disruptions, financial losses, and reputational damage. The multi-platform nature of the threat means that businesses with diverse IT infrastructures are particularly at risk.
To protect against the Gentlemen RaaS threat, organizations should bolster their cybersecurity defenses. This includes implementing comprehensive security measures, conducting regular system backups, and ensuring that all software is up-to-date with the latest security patches. By taking these steps, businesses can reduce their vulnerability to this expanding ransomware threat.
Source: https://research.checkpoint.com/2026/dfir-report-the-gentlemen/