--- title: Why The Gentlemen Ransomware Should Be a Red Flag for Every Business description: A sophisticated new ransomware group, The Gentlemen, uses dual-extortion. Here’s how AppGuard can stop this modern threat- containment over detection. image: https://prevent-ransomware.com/hubfs/AI-Generated%20Media/Images/AppGuard%20computer%20being%20protected%20by%20Appguard%2c%20suited%20for%20manufacturers.jpeg --- [![CHIPS Cyber Defense Solutions, LLC](https://prevent-ransomware.com/hubfs/chips_blue_logo_higher_res-20210817212617.png) Cyber Defense Solutions, LLC](https://prevent-ransomware.com) ☰ [About](https://prevent-ransomware.com/about) [Solutions](https://prevent-ransomware.com/solutions) [Industries](https://prevent-ransomware.com/industries) [Resources](https://prevent-ransomware.com/resources) [Partner With Us](https://prevent-ransomware.com/meetings/tony-chiappetta/30-minute-initial-meeting) [About](https://prevent-ransomware.com/about) [Solutions](https://prevent-ransomware.com/solutions) [Industries](https://prevent-ransomware.com/industries) [Resources](https://prevent-ransomware.com/resources) [Partner With Us](https://prevent-ransomware.com/meetings/tony-chiappetta/30-minute-initial-meeting) # Why The Gentlemen Ransomware Should Be a Red Flag for Every Business ![Tony Chiappetta](https://prevent-ransomware.com/hubfs/Tony%20LinkedIn.jpg) by [Tony Chiappetta](https://prevent-ransomware.com/blog/author/tony-chiappetta) November 22, 2025 Ransomware threats are growing more cunning by the day — and few pose as serious a risk to businesses right now as the newly emerged gang known as **The Gentlemen**. As reported by *Cyber Security News*, this group is using a dangerous and highly effective *dual-extortion* approach, combining data encryption with exfiltration of sensitive information. [Cyber Security News](https://cybersecuritynews.com/the-gentlemen-ransomware-group/?utm_source=chatgpt.com) In this blog post, we’ll unpack what makes The Gentlemen ransomware especially alarming — and why business owners should rethink their cybersecurity strategy to emphasize *isolation and containment*, not just detection and response. --- ## What Makes The Gentlemen Ransomware So Dangerous Here’s a breakdown of how this threat works, based on recent threat reports: 1. **Dual-extortion model** The Gentlemen don’t just encrypt your files — they also steal them. - They threaten to publish or leak the stolen data on a darknet “leak site” unless their ransom demands are met. - This means that even if you recover from backups, you may still face a serious data-leak crisis, regulatory risk, reputational damage, or litigation. 2. **Advanced encryption & persistence** - The malware uses **XChaCha20** paired with **Curve25519** encryption — a cryptographic combo that is very strong. - It supports automatic restart and “run-on-boot,” making it persist on infected systems. 3. **Kernel-level defense evasion** The group abuses a legitimate, signed Windows driver — *ThrottleBlood.sys* — to gain kernel-level access. - With this, they can disable or terminate security tools (like antivirus) without triggering typical alerts. - They also deploy dynamically modified binaries (like `Allpatch2.exe`) specifically designed to target and disable security agents. 4. **Network propagation & lateral movement** Once inside, The Gentlemen move laterally using enterprise tools and techniques: - *Windows Management Instrumentation (WMI)* and **PowerShell remoting** to spread. - They exploit **Group Policy Objects (GPOs)** and NETLOGON shares to push their payload across domain-joined systems. - They target critical services: database systems like MSSQL and MySQL, virtualization environments (like VMware ESXi), and backup utilities. 5. **Anti-forensics & cover-up** - The malware deletes Windows Event Logs, Prefetch data, and even RDP connection logs to make detection harder and forensic investigation more difficult. - It disables Windows Defender and other protections via PowerShell, and adds exclusion rules so future scans won’t catch it. 6. **Exfiltration at scale** - The attackers use **WinSCP** over encrypted channels (e.g., SFTP) to exfiltrate data. - They maintain a professional leak site on the dark web, increasing pressure on victims by publicly naming them. - Communication is handled securely: they publish a **TOX ID** for negotiation, avoiding easily traceable channels. 7. **Global reach, targeted industries** - According to intelligence reports, The Gentlemen are active in at least 17 countries. - Their victims appear to come from critical sectors: manufacturing, healthcare, construction, insurance, and more. - Even in the Philippines, intelligence firm CYFIRMA observed an attack on **2GO Group Inc.**, a major logistics company.  --- ## Why Traditional “Detect and Respond” Isn’t Enough Anymore Many businesses lean heavily on solutions that detect ransomware early and respond once an attack is underway. But with a threat like The Gentlemen, this approach has major blind spots: - **Kernel-level evasion**: Because they exploit signed drivers, The Gentlemen can disable defenses before many security products even realize something is happening. - **Persistence**: Their malware can restart on boot, making traditional response slower and less effective. - **Data exfiltration before encryption**: Even if you catch the encryption, your data might already be compromised and heading to a leak site. - **Lateral spread**: Their use of enterprise tools means that once they’re in, they can quickly propagate across your network — affecting backups, shared drives, and critical systems. In short: detecting an attack is no longer half the battle. By the time you react, damage — both in terms of system access *and* data loss — may already be done. --- ## A Better Strategy: Move to Isolation and Containment with AppGuard To defend against advanced threats like The Gentlemen, businesses need to shift their security posture. That means prioritizing **isolation and containment**, not just detection. Here’s where **AppGuard** comes in. AppGuard is a proven endpoint protection solution with over **10 years of real-world success**, now available for commercial organizations. Here’s why it matters: - **Proactive protection**: AppGuard doesn’t wait to detect malicious behavior. It isolates and confines potentially dangerous processes, preventing ransomware from gaining kernel-level control. - **Containment by design**: Even if a threat actor gains a foothold, AppGuard limits what they can do. Critical parts of the system remain protected, and lateral movement is blocked. - **Minimal reliance on signatures**: Unlike traditional antivirus that depends on identifying malware, AppGuard enforces policies to prevent untrusted or abnormal behavior — making it resilient against new, unseen threats. - **Proven track record**: Over a decade, AppGuard has been battle-tested across many types of threat landscapes — and now that maturity is available for your business. By isolating processes and containing potential threats early, AppGuard drastically reduces the risk of both encryption and exfiltration. --- ## The Urgency Is Real The emergence of The Gentlemen ransomware group underscores how high-stakes the threat landscape has become: - Their **dual-extortion** model means traditional backups may not be enough. - Their **technical sophistication** allows them to neutralize security tools, persist through reboots, and move laterally in enterprise networks. - Their **professionalized leak site** adds pressure, public shaming, and long-term risk even after paying ransom. If your business relies only on detecting ransomware — and then responding — you may already be vulnerable. --- ## Call to Action Business leaders: it's time to rethink how you protect your endpoints. Don’t continue relying solely on “detect and respond.” The threat is evolving, and so must your defense strategy. [**Talk to us at CHIPS today**](https://prevent-ransomware.com/getting-started) to explore how **AppGuard** can help you move to a stronger security posture — one that emphasizes *isolation and containment*, not just detection. With AppGuard in place, you can dramatically reduce the risk of having your data not only encrypted, but also stolen. Let’s build a defense that’s ready for the next generation of ransomware. Like this article? Please share it with others! 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