Trojan.Multi.DNSChanger.a Virus Removal

This article can help you to remove Trojan.Multi.DNSChanger.a Virus. The step by step removal works for every version of Microsoft Windows.

Trojan.Multi.DNSChanger.a falls under the Trojan umbrella. It’s a dangerous cyber threat. One that slithers into your system via cunning, and deceit. Then, once inside, takes control and wreaks havoc. Trojan are an utter cyber plague. They spread throughout your system fast, then corrupt it. You face daily interference. Your browsing experience turns into utter hell. You suffer lag, and continuous crashes. You get forced into restarting your computer all the time. But the restarts don’t help, and you end up facing the same issues, and having to restart again. It’s a nightmare. But it gets worse. The Trojan.Multi.DNSChanger.a infection doesn’t only mess with your settings. And, the general well-being of your system. It takes aim at your privacy, as well. If you give it enough time on your PC, it will succeed with its dreadful agenda. That being, to steal and expose your private information. Don’t allow that. Don’t let it succeed. Take actions against the cyber threat as soon as the opportunity presents itself. The sooner you get rid of it, the better.

remove Trojan.Multi.DNSChanger.a

How did I get infected with?

You either clicked on the wrong thing by accident. Like, a link in a spam email, or a fake download link. Or, you quite purposefully, agreed to install the cyber threat. If you’re wondering how that’s even possible, it’s simple. You gave into distraction, naivety, and haste. And, now you’re paying for your carelessness. Confused? Let’s elaborate. Infections, like Trojan.Multi.DNSChanger.a, need permission to access a system. The user’s permission. Your permission. For the Trojan to enter, you have to let it. The tool must ask whether you agree to install it, and only goes forward, if you do. Odds are, you have no memory of such an exchange taking place. And, that’s no surprise. Trojans are sly. They turn to deception and finesse. And, seek your consent via the sneakiest ways possible. Think about it. If they’re straightforward with their advances, you can say NO with ease. And, they can’t have that. It’s not a risk, they can take. So, instead, they resort to trickery. And, employ the assistance of the old but gold means of invasion. Freeware, spam emails, corrupted sites. There’s an entire array of methods, they can use. Including, posing as a fake system or program update. Above all, be cautious! Every time, you install a tool, update, anything off the web, be wary. Do your due diligence, and be extra attentive. It goes a long way. Carelessness tends to lead to infections. Vigilance helps to avoid them.

Why is this dangerous?

Trojan.Multi.DNSChanger.a acts as a gateway. It opens your system to danger. The infection opens a backdoor for viruses, and hackers alike. It exposes you to further grievances. What’s more, it exhibits ransomware-like characteristics. The Trojan locks a variety of your files by password-protecting them. It makes it so you cannot access your own files. And, of course, blackmails you afterwards. The scam goes like this. It encrypts files, archives, and whatever else it decides. Then, states that if you wish to decrypt, you must purchase a decryption key. Do NOT pay a single dime! The people behind the infection are dangerous. If you pay them, they will get access to your personal and financial details. Information, which they can then further exploit. Don’t let these cyber criminals get a hold of your private data. Protect yourself. Protect your system from the clutches of the Trojan. Trojan.Multi.DNSChanger.a is bad news whichever way you look at it. Delete it the first chance you get. Its prompt removal is the best course of action, you can take. One that earns you the gratitude of your future self. So, take it ASAP.

Manual Trojan.Multi.DNSChanger.a Removal Instructions

The Trojan.Multi.DNSChanger.a infection is specifically designed to make money to its creators one way or another. The specialists from various antivirus companies like Bitdefender, Kaspersky, Norton, Avast, ESET, etc. advise that there is no harmless virus.

If you perform exactly the steps below you should be able to remove the Trojan.Multi.DNSChanger.a infection. Please, follow the procedures in the exact order. Please, consider to print this guide or have another computer at your disposal. You will NOT need any USB sticks or CDs.

STEP 1: Track down Trojan.Multi.DNSChanger.a related processes in the computer memory

STEP 2: Locate Trojan.Multi.DNSChanger.a startup location

STEP 3: Delete Trojan.Multi.DNSChanger.a traces from Chrome, Firefox and Internet Explorer

STEP 4: Undo the damage done by the virus

STEP 1: Track down Trojan.Multi.DNSChanger.a related processes in the computer memory

  • Open your Task Manager by pressing CTRL+SHIFT+ESC keys simultaneously
  • Carefully review all processes and stop the suspicious ones.


  • Write down the file location for later reference.

Step 2: Locate Trojan.Multi.DNSChanger.a startup location

Reveal Hidden Files

  • Open any folder
  • Click on “Organize” button
  • Choose “Folder and Search Options”
  • Select the “View” tab
  • Select “Show hidden files and folders” option
  • Uncheck “Hide protected operating system files”
  • Click “Apply” and “OK” button

Clean Trojan.Multi.DNSChanger.a virus from the windows registry

  • Once the operating system loads press simultaneously the Windows Logo Button and the R key.


  • A dialog box should open. Type “Regedit”


Depending on your OS (x86 or x64) navigate to:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run] or
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] or

  • and delete the display Name: [RANDOM]

delete backgroundcontainer

  • Then open your explorer and navigate to: %appdata% folder and delete the malicious executable.

Clean your HOSTS file to avoid unwanted browser redirection

Navigate to %windir%/system32/Drivers/etc/host

If you are hacked, there will be foreign IPs addresses connected to you at the bottom. Take a look below:


Step 4: Undo the possible damage done by Trojan.Multi.DNSChanger.a

This particular Virus may alter your DNS settings.

Attention! this can break your internet connection. Before you change your DNS settings to use Google Public DNS for Trojan.Multi.DNSChanger.a, be sure to write down the current server addresses on a piece of paper.

To fix the damage done by the virus you need to do the following.

  • Click the Windows Start button to open the Start Menu, type control panel in the search box and select Control Panel in the results displayed above.
  • go to Network and Internet
  • then Network and Sharing Center
  • then Change Adapter Settings
  • Right-click on your active internet connection and click properties. Under the Networking tab, find Internet Protocol Version 4 (TCP/IPv4). Left click on it and then click on properties. Both options should be automatic! By default it should be set to “Obtain an IP address automatically” and the second one to “Obtain DNS server address automatically!” If they are not just change them, however if you are part of a domain network you should contact your Domain Administrator to set these settings, otherwise the internet connection will break!!!


  • Check your scheduled tasks to make sure the virus will not download itself again.

How to Permanently Remove Trojan.Multi.DNSChanger.a Virus (automatic) Removal Guide

Please, have in mind that once you are infected with a single virus, it compromises your whole system or network and let all doors wide open for many other infections. To make sure manual removal is successful, we recommend to use a free scanner of any professional antimalware program to identify possible virus leftovers or temporary files.

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