Windows 11: these fake installation files hide malware

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Fake installation files for Windows 11 are currently circulating on the web, reveals Kaspersky in a report published on July 23, 2021. While Microsoft makes it easy to download Windows 11 from its official website, many Internet users continue to retrieve programs installation on other sites.

These files often contain malware , such as adware or Trojan horse spyware. Sometimes the files really contain Windows 11. The hackers just dragged a few unwanted programs into them. In other cases, the program does not even allow installing Microsoft’s new operating system.


Kaspersky takes the example of an installation file called “ 86307_windows 11 build 21996.1 x64 + activateator.exe”. This file has been widely shared by cyber criminals. Once launched on the computer, the .exe file will open a window that “looks like a regular Windows installation wizard” . Unfortunately, this dummy installer will mostly download and install another installer file . He will claim your agreement by ensuring that he wants to install “certain sponsored software” from Microsoft. This will then drag unwanted software onto your PC.

“These other programs can be very varied,” warns the firm specializing in computer security. After investigation, Kaspersky mostly discovered rather harmless adware . Concretely, this malware will bombard you with advertisements continuously. This method, popular with Android malware, allows hackers to quickly rake in ad revenue.

More seriously, Kaspersky has also detected Trojans, malware that will take the appearance of a harmless program in order to deploy attacks. Finally, the report also warns against malware capable of capturing Internet users’ passwords . We therefore advise you to be very careful. As a reminder, Windows 11 should land on compatible computers during the month of October 2021 .

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