How to get rid of this banner?

Question

Internet advertising

At first, all browsers switched to the search engine from Mail (perhaps it has nothing to do with it). At the same time, such banners began to appear on all sites (1st screenshot from Mozilla without adblock (the very first search query, it didn’t exist before); 2nd screenshot from chrome with adblock (well, here you yourself see what not to be must)). At first I rolled back the system 5 days ago, I thought it would disappear, the PC worked fine for 1 day, but then all these banners returned. I installed Kaspersky, scanned the system, found 5 malicious files, deleted them and rebooted the system, but after the reboot, the banners did not disappear anywhere, and Kaspersky did not find anything else. There is also such a nuance that I went into the network from 2 different cities, from 2 different routers, but the problem is the same. I have Windows 8.1, the provider is the same in both cities: Rostelecom. Help, please, otherwise I can’t find anything on this problem in Google, and these banners greatly interfere with my life. I don’t want to demolish the system, but if no solutions are found, then apparently I will have to, although another person who also asked a question about banners here on the Toaster did not help demolition of the system.

Answer 1

what I would do:
0) use the scanner for autorun applications in the system (registry) you can reg organaizer, etc. - perhaps there is some kind of starter that works in the background
1) synchronization in chrome - so as not to lose bookmarks)
2) reset settings in browsers
3) if the above did not help, delete using the same reg organaizer (erases data in the registry and garbage files ) recently installed programs and browsers
And due to the fact that the search engine gives you not always accurate data next to the search results or imposes stores) - this will pass with time, this is the policy of search servers

Answer 2

Ran into this too.
I think these are extensions for Chrome and Firefox.
In Firefox, I removed the anticontainerdownthemallnet plugin, and it was cured, but after a reboot it became the same. Wait, I'll try to install the Extension Defender plugin to combat this evil.

Answer 3

Try avast, he seems to have had some kind of built-in feature for cleaning browsers before.

Answer 4

I would suggest checking your browser shortcuts. Recently, more and more often I began to find links to redirector sites there. And it turns out the system is clean, but everything works "wrong" in the browser.