C0XMO Botnet Hits DD-WRT Routers, Wipes Out Rival Malware

Emily Davis · 2026-06-07

You might think your router is just a boring box that passes internet around your home, but it's actually a tiny computer running its own operating system. And like any computer, it can get infected. That's exactly what's happening right now with a nasty new piece of malware called C0XMO. This isn't some random script kiddie experiment. C0XMO is a fresh variant of the Gafgyt botnet, and it's specifically targeting routers running DD-WRT firmware. What makes it really dangerous? It doesn't stop at routers. It can jump to other devices with different CPU architectures, spreading like wildfire through your network. ### How C0XMO Spreads and What It Does The attack works by exploiting a known vulnerability in DD-WRT firmware. Once it gets in, C0XMO takes over your router and turns it into a zombie machine that can be used for all sorts of nasty stuff, like launching DDoS attacks or stealing data. But here's the wild part: C0XMO doesn't just sit there. It actively hunts down and kills other malware it finds on the same device. Think of it like a digital hitman that wipes out the competition. This is actually pretty smart from the attacker's perspective. By removing rival malware, C0XMO ensures it has full control of the infected device without any interference. - It targets routers running DD-WRT firmware - It can spread to other devices with different CPU architectures - It actively removes competing malware from infected devices - It can be used for DDoS attacks and other malicious activities  ### Why Your Router Matters Most people never think about securing their router. You plug it in, set up Wi-Fi, and forget about it. But that's exactly what attackers count on. Routers often run outdated firmware with known vulnerabilities that never get patched. DD-WRT is a popular open-source firmware that gives you tons of control over your router. But with great power comes great responsibility. If you're running DD-WRT and haven't updated it recently, you could be vulnerable to C0XMO right now.  ### What You Can Do to Protect Yourself First things first: check your router's firmware. If you're using DD-WRT, make sure you're running the latest version. The developers have likely patched the vulnerability C0XMO exploits. Second, change your default admin credentials. I know, it's annoying, but it's one of the easiest ways to keep attackers out. Use a strong password that's at least 12 characters long with a mix of letters, numbers, and symbols. Finally, consider using an antidetect browser if you're doing anything sensitive online. These browsers mask your digital fingerprint, making it harder for malware and trackers to identify and target you. It's not a cure-all, but it adds another layer of protection. ### The Bigger Picture C0XMO is a reminder that the internet of things is only as secure as its weakest link. Your router, smart TV, and even your fridge can become weapons in a botnet if they're not properly secured. The fact that C0XMO kills rival malware shows how sophisticated these attacks have become. Attackers aren't just throwing spaghetti at the wall anymore. They're building smart, adaptive malware that can survive and thrive in a hostile digital environment. Stay safe out there. Update your firmware, change your passwords, and think twice before assuming anything connected to the internet is safe.