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The Latest Hack: There’s A Worm in Your Apple

An old threat is back, and it’s nastier than ever. If you use a Mac, you’ll want to pay attention – XCSSET has evolved, and it’s more dangerous than before. But what is XCSSET and what can you do to stay safe from this returning threat? Let’s get right into it.

What Is XCSSET?

Most of you have probably never heard of XCSSET. This piece of malware, discovered in 2020, aims to steal digital wallets, snoop through Notes, and spy on system files. Scary, huh?

Even scarier: Microsoft warns that XCSSET has evolved with stronger evasion tactics and new ways to stick around on infected Macs.

The Hack

XCSSET sneaks onto computers through Xcode, a developer tool used to build Mac applications. That means app developers – not everyday users – are the first to get hit. But if an infected app is downloaded, the malware can compromise a user’s system without their knowledge. It’s like a disease in a meat distribution plant – if contaminated products hit shelves, unsuspecting customers are exposed.

One of XCSSET’s tricks is obfuscation – a technique that helps it hide from antivirus programs by disguising its true behavior. And the latest version of XCSSET is better than ever at staying under the radar.

New Version, New Problems

While XCSSET’s goal remains the same – stealing data – the virus has leveled up. It’s harder to detect, harder to remove, and better at infecting systems.

Side-Stepping Security

Even with antivirus software, XCSSET knows how to slip past security. It modifies system files, swapping out real files with fake versions that keep the malware running undetected.

Take Mac’s Launchpad, – the built-in application launcher for your Mac. XCSSET replaces it with a fake version, so every time you use Launchpad to view your apps, you’re unknowingly running the malware in the background. Many users wouldn’t think twice before clicking on an application you’ve used for years. That’s why this is so effective.

Hard to Kill

Even if an antivirus program removes XCSSET, it has ways of coming back. That’s because it can hide inside software updates, meaning that a simple update could reinstall the malware, even after you thought it was gone – ironic, since updates are meant to protect your system. In this case, doing the right thing can backfire.

What Can You Do?

Microsoft reports that XCSSET remains a limited threat for now, primarily targeting developers, but staying vigilant is key. As with all cyber security, prevention is key.

  • Be cautious when downloading any application. Just because something is on the App Store doesn’t mean it’s safe.
  • If you’re a developer that uses Xcode, verify your projects. XCSSET spreads primarily through infected Xcode files.
  • Keep your Mac and security software up to date. While XCSSET can hide in updates, they also patch vulnerabilities that malware like XCSSET exploits.

Moral of the Story

XCSSET is back and it’s more dangerous than ever. By embedding itself in apps and software updates, it can sneak onto a computer and steal valuable data.

Be careful about what you install, check with IT before downloading anything, and – if you’re a developer – double-check your Xcode projects. You never know which app might be hiding a nasty surprise.

About The 20 MSP

As a leading provider of managed IT services, The 20 MSP serves thousands of businesses nationwide, providing each one with white-glove service, secure and streamlined IT infrastructure, and 24/7/365 support. We believe in building lasting relationships with clients founded on trust, communication, and the delivery of high-value services for a fair and predictable price. Our clients’ success is our success, and we are committed to helping each and every organization we serve leverage technology to secure a competitive advantage and achieve new growth. To learn more, visit the20msp.com.