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. https://blog.malwarebytes.com/trojans/2019/07/extenbro-a-new-dns-changer-trojan-protecting-adware/
blog article
MEET EXTENBRO, A NEW DNS-CHANGER TROJAN PROTECTING ADWARE
Recently, we uncovered a new DNS-changer called Extenbro that comes with an adware bundler. These DNS-changers block access to security-related sites, so the adware victims can’t download and install security software to get rid of the pests. From our viewpoint, this might be like sending in an elephant to save the mosquito, but the threat actors behind this attack have been known to use aggressive tactics in the past. What do they care if they open up your machine to all kinds of threats by disallowing you access to security sites and blocking any existing security software from getting updates? They just want to serve you adware. Unfortunately, we have seen this kind of behavior before. But since this one uses a few fancy tricks, we’ll give you a quick overview of what it does and how you can get rid of it. For those just looking for a quick fix, there is a removal guide on our forums. READ MORE