Do you know what Extenbro Dns is?
If you are being denied access to security websites, there is a good chance that Extenbro Dns has managed to invade your Windows operating system. This infection slithers in without notice, and then it changes DNS settings to block access to specific websites. What is the purpose of that? Most likely, it is to ensure that you cannot download security software or find useful virtual security-related information. Maybe that is meant to help conceal other threats? We do not know that, but if you employ a reliable malware scanner, it will let you know if other malicious infections were dropped onto your computer. Of course, if they were, you must remove them immediately. In this article, we focus on deleting Extenbro Dns, but if you need help eliminating anything else, note that the comments section is open.
Also known as Trojan.Downloader.Agent, Extenbro Dns cannot simply appear on your computer without a cause. It must use a security loophole or backdoor to slither in, and it appears that malicious downloaders are likely to be responsible. Do you remember downloading anything new right before the symptoms of the devious Extenbro Dns started occurring? It is possible that the program you think you downloaded was fictitious, but it is also possible that it is harmless and that it was used only to help the Trojan slither in without your notice. In any case, if the infection was executed when downloading something, you want to inspect the remaining files carried by the downloader because those too could be malicious and require removal. After execution, the Trojan should be dropped to %LOCALAPPDATA%. The folder(s) created by the infection should be named as “prunld{number},” and the file inside should be named “he{number}.exe.” If you can find these components, remove them immediately.
If you do not remove Extenbro Dns right away, it changes DNS settings (92.246.76.123, 45.86.180.227, and 116.203.6.218, and 185.130.104.222 DNS servers are used) to block access to some websites. After this, a notification suggesting that the website’s server IP address was not found shows up. Extenbro Dns also creates a scheduled task to ensure that it persists and can continue blocking security websites until the infection is successfully removed. This can be incredibly annoying and, of course, dangerous because if you are denied access to websites that can help you learn about malware and install tools that would detect and delete it, you could face big security issues. The good news is that you should have no trouble executing the installers of security software, and you can drop them onto your computer using a flash drive after downloading them using a malware-free computer.
It is strongly recommended that you install automated anti-malware software to have your operating system cleaned. While detecting and removing Extenbro Dns should not be difficult if you can follow the steps below, it is very likely that other infections exist, and you also need to think about reliable protection in the future. The right anti-malware tool will take care of all of these problems, and you will not need to worry about your virtual security. If you decide to get rid of Extenbro Dns manually, you will need to find, research, and delete all other threats on your own, and you will also need to secure your system, which is easier said than done.
Delete Extenbro Dns
- Tap Win+R keys to launch Run.
- Enter regedit and click OK to launch Registry Editor.
- Move to HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\.
- Delete the {unique name} value whose value data points to a malicious file in %LOCALAPPDATA%.
- Tap Win+E keys to launch Explorer.
- Enter %WINDIR%\System32\Tasks\ into the bar at the top.
- Delete the {unique name} task (open with text editor to see the path to the file in %LOCALAPPDATA%).
- Enter %LOCALAPPDATA% into the bar at the top.
- Delete all prunld{number} folders that hold malicious he{number}.exe files inside.
- Quickly Empty Recycle Bin.
- Install and run a legitimate malware scanner to determine if there are other threats that require removal.
In non-techie terms:
The malicious Extenbro Dns is meant to block access to certain websites, and, potentially, make it easier for other malicious infections to run wild on your operating system. The Trojan can make it impossible to research these infections and also install software that could delete them. Considering that, and the fact that the Trojan is most likely to be downloaded using bundled downloaders, you need to keep in mind that other threats are likely to exist on your operating system. The instructions above show how to remove Extenbro Dns manually, but, of course, you will not erase all other threats using the same steps. If you cannot detect and remove additional threats manually, it might be the perfect opportunity for you to install an anti-malware program that would clean your operating system automatically.