Ransomware Gangs Are Hiding Inside Microsoft Teams at Work

What's Happening

Cybercriminals from the DragonForce ransomware group have found a clever way to sneak past security systems. They're hiding their malicious activity inside Microsoft Teams traffic, the same communication tool millions of workers use every day. This matters because security teams typically trust Teams traffic, making these attacks much harder to spot before damage occurs.

The Details

Here's how this works in plain terms. When you use Microsoft Teams at work, your messages travel through Microsoft's relay infrastructure. This is the digital pathway that carries your video calls, chats, and file shares. Hackers have created custom malware called Backdoor.Turn that disguises itself as normal Teams communication.

Think of it like a burglar wearing a delivery uniform to blend in with legitimate visitors. Security systems see what looks like regular Microsoft Teams traffic and let it pass through. Meanwhile, the malware is quietly establishing a connection that allows attackers to control infected computers and eventually deploy ransomware.

This technique is particularly dangerous because most companies configure their firewalls to allow Teams traffic without scrutiny. After all, blocking it would prevent employees from doing their jobs. DragonForce is exploiting this trust to hide in plain sight.

Who Is Affected

This threat primarily impacts professionals who work at organizations using Microsoft Teams. If your workplace relies on Teams for daily communication, your company's network could be vulnerable. IT departments and security teams need to pay close attention to this development.

However, families should care too. If a parent's work computer gets infected, attackers might access personal information stored on that device. Some people use work computers for personal tasks, which could expose family photos, passwords, or financial documents. The line between work and home security is thinner than most people realize.

What You Should Do Right Now

1. Keep work and personal activities completely separate. Never log into personal email, banking, or social media accounts on your work computer. Use your personal devices for personal matters.

The Bigger Picture

This attack represents a troubling evolution in cybercrime. Hackers are increasingly abusing trusted business tools like Teams, Slack, and Zoom to evade detection. As companies invest more in security, criminals adapt by hiding inside the very platforms we depend on for work. Staying informed about these emerging techniques is no longer optional for anyone who uses technology professionally or personally.

How GetCyberRight Can Help

Our Cyber Threat Radar tool tracks exactly these kinds of emerging attack techniques. It monitors how cybercriminals abuse trusted business communication platforms and translates complex threats into plain language you can actually use. When new dangers like the DragonForce Teams exploit appear, Cyber Threat Radar helps you understand what's at risk and what to do about it before your family or workplace becomes a victim.