Fake Windows 11 installers are injecting malware into PCs, researchers warn

Cybercriminals are cashing in on Windows 11 hype

Kaspersky researchers have warned against downloading fake Windows 11 installers that could inject malware, adware and other malicious programmes on unsuspecting users' PCs.

Researchers have seen several malware-riddled fake installers online in recent days, targeting keen Microsoft fans who have been impatient to try the firm's new OS.

Microsoft hasn't yet released Windows 11, but its preview versions are available for Windows Insider Program members and developers.

When it announced the new Windows OS last month, Microsoft said it would make Windows 11 available on new desktops, laptops and other devices by the end of the year. It will also be available as a free upgrade for certain Windows 10 devices.

Windows 11 is cosmetically very different from Windows 10, including a redesigned Start button, revamped task bar and sounds, and a variety of other features that are designed to enhance efficiency and speed.

Users who want to get their hands on the new OS before its official release can join the Windows Insider programme and download preview versions officially from Microsoft.

However, cybercriminals are keen to exploit the hype around the newest version of Windows.

In one instance, Kaspersky researchers spotted an installable 1.76GB file called '86307_windows 11 build 21996.1 x64 + activator.exe', which appeared genuine but actually had a DLL file with mostly useless information.

Instead of installing Windows 11, the installer ran another executable file with a license agreement. If a user agreed to the terms, the executable file began to download malicious software onto the system.

This is just one example of a fake installer, and there are several others floating around on the web.

Users who really want to get Windows 11 on their PCs should enrol in the Windows Insider Program, or wait a few more months until Microsoft releases an official public build.

Users should also note that the new OS update is still in beta, so downloading and installing it on a main machine may not be a good idea right now. Instead, users can install Windows 11 on a secondary PC, or on a virtual machine if the system supports it.