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One Click Is All It Takes: New Mac Malware Steals Your Data

 



A growing number of Mac users are being tricked into downloading harmful software through fake verification messages. These scams look like normal human checks, such as Google’s “I’m not a robot” box, but are actually part of a malware campaign targeting Apple computers.

Researchers recently found that over 2,800 websites have been hacked to spread a malware called Atomic Stealer. This software is designed to steal passwords, browser data, crypto wallets, and personal files from infected Macs.


How the scam works

The attack begins when someone visits one of these infected websites. A fake pop-up appears, asking them to prove they’re human. It looks like a regular verification step we’re used to seeing online. Most people would not think twice before clicking.

But once the user clicks the button, a hidden code is quietly copied to their clipboard. Then, the pop-up gives strange instructions that tell the person to open the Terminal app on their Mac and paste the copied code.

If they follow these steps and press Enter, the malware gets installed on their system. The software then begins stealing information saved in the system’s password manager and browsers, as well as any crypto assets stored on the device.


Why this trick is dangerous

This attack is hard to catch because the victim unknowingly helps install the malware. Instead of using a typical virus download, the scam relies on people following the instructions themselves. This method can bypass antivirus programs, making it even more dangerous.

What makes this more troubling is that this malware is being sold as a service. Hackers pay monthly to use Atomic Stealer, which means many groups can launch similar attacks using different techniques.


How to protect yourself

If a website ever tells you to open Terminal or paste something into your system, close it right away. This is not a normal request and should be treated as a red flag.

While Apple devices include built-in security tools, it’s also a good idea to install trusted antivirus software for added safety. Identity theft protection services can also help if your personal information is ever misused.

This scam is successful because it plays on our habits. Many people don’t question familiar actions, especially when under pressure. Share this information with friends and family so they can stay safe, too. Avoid unfamiliar websites, think carefully before clicking, and never follow odd instructions from online pop-ups.

Apple Awards Bounty of $100,500 for Finding Flaws in MacBook

In 2021, Apple patched a set of MacOs vulnerabilities exposing the Safari browser to attack and letting threat actors hack users' online accounts, cameras, and mic. Cybersecurity expert Ryan Pickren, who found these vulnerabilities and reported back to company Apple, was given a $100,500 bug bounty, considering the critical scale of the vulnerabilities. These bugs exploit a set of security issues with iCloud sharing and Safari 15. 

It allows the hacker to control multimedia permissions and gain full access to all sites that the user has opened using the Safari browser. It also includes Gmail, iCloud, PayPal, and Facebook accounts. The problem is primarily concerned with ShareBear, it is an iCloud file-sharing platform that prompts users to open a shared document. Pickren noticed that the prompt doesn't ask the user to open a file after a user opened it once. 

Pickren concluded that this can allow a threat actor to play with the file's components if he has access to the files. "ShareBear will then download and update the file on the victim's machine without any user interaction or notification. 

In essence, the victim has given the attacker permission to plant a polymorphic file onto their machine and the permission to remotely launch it at any moment," explains Pickren in his writeup. In simpler terms, a .PNG format image file can have all its content and extension converted into an executable binary ("evil.dmg") once the user has opened the file. 

After this, one can launch the binary, which triggers exploit chain vulnerabilities that influence extra bugs found in Safari to control a system's mic and camera and steal local files stored in the device. It is not the first time Pickren disclosed bugs in iOS and macOS that allows a threat actor to gain access to a system and control its commands. 

The unauthorized access is gained when the victim opens a certain file type. He says "this project was an interesting exploration of how a design flaw in one application can enable a variety of other, unrelated, bugs to become more dangerous."