Look out - these fake Microsoft Teams installers are just spreading dangerous malware

Date:
Mon, 29 Sep 2025 13:04:00 +0000

Description:
Be careful when searching for Microsoft Teams online - you might end up on
the wrong side of the internet.

FULL STORY ======================================================================Fake Teams site delivers Oyster malware via SEO poisoning and deceptive ads
Spoofed page mimics Microsofts design, tricking users into downloading
malware Best defense: type known URLs directly, avoid relying solely on
search results

If youre looking to install the Microsoft Teams platform, be very careful how you navigate to the downloads page, as experts have warned of a new malicious campaign tricking people into downloading malware instead.

Security researchers from Blackpoint SOC recently discovered a fraudulent Microsoft Teams downloads page hosted at teams-install[.]top. It looks almost identical to the legitimate Microsoft site, with the color, design, and
fonts, all resembling the actual site.

However, instead of downloading the popular communications platform, victims are served the Oyster backdoor, a known piece of malware that grants the attackers full access to the compromised endpoint. SEO poisoning and malvertising

The site is optimized for search engines, a practice known as SEO poisoning. People searching for teams download (and probably a few other keywords) will find the spoofed site at the top of their search results, right next to the legitimate one.

If a user is not careful, it is quite easy to end up on the wrong site and download malware instead of the actual program.

To make things worse, the attackers also managed to set up a few ads on the internet, which also seem to appear at the top of the search engine results page.

SEO poisoning and malvertising campaigns like this one work well because searching for known sites and programs, instead of typing the address in the browsers address bar is a rather common behavior.

Many users treat Google as their front door to the internet. For example, in 2024, YouTube was the most searched term on Google worldwide, closely
followed by WhatsApp Web.

In the United States, Amazon led the search trends after YouTube. All these platforms are globally recognized and can all be accessed by typing their
.com domain in the browser .

This is also the best way to defend against SEO poisoning and malvertising - dont blindly trust search engine results, and navigate to as many sites as
you can - directly through your browser.

Via BleepingComputer You might also like Hackers are using fake Zoom or Microsoft Teams invites to spy on all your workplace activity Take a look at our guide to the best authenticator app We've rounded up the best password managers



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Link to news story: https://www.techradar.com/pro/security/look-out-these-fake-microsoft-teams-ins tallers-are-just-spreading-dangerous-malware


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