Malwarebytes for Windows Missed One

[Tnilc]

Here's a screen shot of Malwarebytes telling me nothing has been detected on a scan, immediately after which a virus ad popped up... does this happen often?

[Malwarebytes]

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[exile360]

Greetings,

That pop-up appears to be from a push notification from a web browser.  This is not actually an indication of an infection on your system.  Most likely a website someone on the system was visiting prompted them to allow notifications from the site and they clicked the option to allow it.  Once that happens, that website can push such pop-ups/notifications any time the system is online until the permission to display push notifications from that site are revoked.  This can obviously lead to some very obnoxious behavior, including being inundated with unwanted and unexpected pop-up advertisements and false alerts like the one shown in the image you posted above.

You can learn more about what push notifications are and how they are often abused, as well as how to eliminate them by reviewing the information in this Malwarebytes Labs article as well as this Malwarebytes Labs article.  The instructions vary depending on what browser the notifications are coming from, but instructions for the major browsers are included in the aforementioned article.

In the future you can prevent many of these items by installing Malwarebytes Browser Guard, a free add-on which is available for Chromium based browsers like Google Chrome and Microsoft Edge Chromium as well as Mozilla Firefox.  It blocks many of the sites that are known to abuse the push notification feature.

I hope this helps and if there is anything else we might assist you with please let us know.

Thanks

[nukecad]

As exile360 says, it appears to be a dodgy/misleading advertising pop-up.

If you look closely the site being advertised in that popup, and which you would probably go to if you clicked the link, is "Darwin2.ru" - which is a travel site and noting to do with an antivirus.
 

Quote

 

About the DARWIN2.RU project

This site specializes in producing content for package travelers and solo travelers. In the Maps.Me section , you can download ready-made tourist routes for the main attractions and memorable places of major cities in Russia, Europe and Asia for free.

 

 

[Tnilc]

Thank you, exile360 and nukecad! That explains it.

[exile360]

You're welcome.  I wish the browser developers would eliminate this feature as it has very few legitimate uses and is widely abused by scammers and advertisers.