Welcome back, my aspiring hackers!
Nowadays, we often discuss the importance of protecting our systems from malware and sophisticated attacks. We install antivirus software, configure firewalls, and maintain vigilant security practices. But what happens when the attack vector isn’t a malicious file or a network exploit, but rather a legitimate browser feature you’ve been trusting?
This is precisely the threat posed by a new command-and-control platform called Matrix Push C2. This browser-native, fileless framework leverages push notifications, fake alerts, and link redirects to target victims. The entire attack occurs through your web browser, without first infecting your system through traditional means.
In this article, we will explore the architecture of browser-based attacks and investigate how Matrix Push C2 weaponizes it. Let’s get rolling!
The Anatomy of a Browser-Based Attack
Matrix Push C2 abuses the web push notification system, a legitimate browser feature that websites use to send updates and alerts to users who have opted in. Attackers first trick users into allowing browser notifications through social engineering on malicious or compromised websites.
Once a user subscribes to the attacker’s notifications, the attacker can push out fake error messages or security alerts at will that look scarily real. These messages appear as if they are from the operating system or trusted software, complete with official-sounding titles and icons.
The fake alerts might warn about suspicious logins to your accounts, claim that your browser needs an urgent security update, or suggest that your system has been compromised and requires immediate action. Each notification includes a convenient “Verify” or “Update” button that, when clicked, takes the victim to a bogus site controlled by the attackers. This site might be a phishing page designed to steal credentials, or it might attempt to trick you into downloading actual malware onto your system. Because this whole interaction is happening through the browser’s notification system, no traditional malware file needs to be present on the system initially. It’s a fileless technique that operates entirely within the trusted confines of your web browser.
Inside the Attacker’s Command Center
Matrix Push C2 is offered as a malware-as-a-service kit to other threat actors, sold directly through crimeware channels, typically via Telegram and cybercrime forums. The pricing structure follows a tiered subscription model that makes it accessible to criminals at various levels of sophistication. According to BlackFog company, the Matrix Push C2 costs approximately $150 for one month, $405 for three months, $765 for six months, and $1,500 for a full year. Payments are accepted in cryptocurrency, and buyers communicate directly with the operator for access.
From the attacker’s perspective, the interface is intuitive. The campaign dashboard displays metrics like total clients, delivery success rates, and notification interaction statistics.
As soon as a browser is enlisted by accepting the push notification subscription, it reports data back to the command-and-control server.
Matrix Push C2 can detect the presence of browser extensions, including cryptocurrency wallets like MetaMask, identify the device type and operating system, and track user interactions with notifications. Essentially, as soon as the victim permits the notifications, the attacker gains a telemetry feed from that browser session.
Social Engineering at Scale
The core of the attack is social engineering, and Matrix Push C2 comes loaded with configurable templates to maximize the credibility of its fake messages. Attackers can easily theme their phishing notifications and landing pages to impersonate well-known companies and services. The platform includes pre-built templates for brands such as MetaMask, Netflix, Cloudflare, PayPal, and TikTok, each designed to look like a legitimate notification or security page from those providers.
Because these notifications appear in the official notification area of the device, users may assume their own system or applications generated the alert.
Defending Against Browser-Based Command and Control
As cyberwarriors, we must adapt our defensive strategies to account for this new attack vector. The first line of defense is user education and awareness. Users need to understand that browser notification permission requests should be treated with the same skepticism as requests to download and run executable files. Just because a website asks for notification permissions doesn’t mean you should grant them. In fact, most legitimate websites function perfectly well without push notifications, and the feature is often more of an annoyance than a benefit. If you believe that your team needs to update their skills for current and upcoming threats, consider our recently published Security Awareness and Risk Management training.
Beyond user awareness, technical controls can help mitigate this threat. Browser policies in enterprise environments can be configured to block notification permissions by default or to whitelist only approved sites. Network security tools can monitor for connections to known malicious notification services or suspicious URL shortening domains.
Summary
The fileless, cross-platform nature of this attack makes it particularly dangerous and difficult to detect using traditional security tools. However, by combining user awareness, proper browser configuration, and anti-data exfiltration technology, we can defend against this threat.
In this article, we briefly explored how Matrix Push C2 operates, and it’s a first step in protecting yourself and your organization from this emerging attack vector.
Source: HackersArise
Source Link: https://hackers-arise.com/command-and-control-c2-using-browser-notifications-as-a-weapon/