Koilk “Virus” Removal

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The Koilk “virus” is terrorizing numerous PC users around the world. This nasty parasite enters your computer in complete silence and wreaks total havoc. It interferes with every aspect of your daily web-browsing. Every time you as much as touch your browser, numerous pop-ups cover your screen. You cannot get any work done without being redirected to some shady website. On top of that, your computer seems to be slower than ever. Yes, these issues are caused by Koilk. This parasite, however, is not a full-fledged virus. It is a malicious ad-generating application — adware. The Koilk adware uses aggressive and misleading marketing strategies to turn you from a visitor into a customer. The adware injects various adverts on every website you open. It can also redirect your web traffic to sponsored websites and pause your online videos for commercial breaks. This parasite is a pain in the neck that is hard to be tolerated. It prevents you from using your machine normally. It is also jeopardizing your privacy. To select the most appealing ads for you, the adware is actually spying on you. It monitors your browsing-related data. It knows which websites you visit, what search inquiries you make, what videos you watch. Even the Incognito mode of your browser cannot hide you from the hijacker. The parasite knows everything. And when it has a sufficient amount of information, it espouses it. The Koilk adware has no place on your computer. Remove it now, so you won’t regret it letter!

How did I get infected with?

The Koilk adware did not hack your computer. The parasite is not an advanced computer virus. It is a simple application. And just like any other app, to be installed, it needs your (the user’s) approval. What it doesn’t need is to ask you openly. The adware uses trickery to lure you into installing it unintentionally. The scheme is simple. Software developers attach it as an extra to the payload file of many third-party programs. When you start the installation process of such a bundled app, you will be asked to select a setup option. There are only two setup types: Standard and Advanced. Which one do you prefer? If your answer is the Standard, change your habits. This process is completely automatic. It installs the additional apps. Your explicit approval is not needed, hence, you are not asked. Under the Advanced setup, however, you will be presented with a list of all extras. You can deselect all suspicious apps. Other adware distribution methods you should keep an eye out for are the good old spam emails, torrents, and fake updates. There is myriad of methods the crook can choose from. All of them, however, share a common necessity. To succeed, they must steal your approval. Don’t be naive. Always make sure you know what you are giving your approval to. Be always vigilant and doubting!

Why is this dangerous?

The Koilk adware interferes with your every online action. Every page you open, every link you follow, every video you watch, everything is covered in ads provided by the adware. You seem to be unable to stop the massive ad-bombardment. Your browser struggles to display the numerous adverts correctly. It freezes and crashes frequently. You cannot get any work done without being interrupted. Your comfort, however, is not the biggest issue here. The Koilk adware is actually jeopardizing your security. This parasite does not verify the ads it displays so freely. Crooks and hackers alike take advantage of the parasite. They use it to redirect web traffic to scam and infected pages. One click is all it takes for a virus to be downloaded. The adware may redirect you to infected pages too. You are dealing with a nasty parasite. It may cause cyber infections. That is not even the tip of the iceberg. Lurking in the shadows, this adware collects data about you. It knows your every online step. What do you think happens with this information? It is sold to third-parties. Numerous crooks are using the adware and its resources to target potential victims. They are after your money. They will do anything to get them. Do not all this scenario to unfold. Protect yourself. Remove the Koilk adware as soon as possible!

How to Remove Koilk virus

The Koilk 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 Koilk 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 Koilk in the computer memory

STEP 2: Locate Koilk startup location

STEP 3: Delete Koilk traces from Chrome, Firefox and Internet Explorer

STEP 4: Undo the damage done by the virus

STEP 1: Track down Koilk 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 Koilk 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 Koilk 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”

• WARNING! be very careful when editing the Microsoft Windows Registry as this may render the system broken.

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
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run]

• and delete the display Name: [RANDOM]

• 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 3 : Clean Koilk traces from Chrome, Firefox and Internet Explorer

• Open Google Chrome

• In the Main Menu, select Tools then Extensions
• Remove the Koilk by clicking on the little recycle bin
• Reset Google Chrome by Deleting the current user to make sure nothing is left behind

• Open Mozilla Firefox

• Press simultaneously Ctrl+Shift+A
• Disable the unwanted Extension
• Go to Help
• Then Troubleshoot information
• Click on Reset Firefox

• Open Internet Explorer

• On the Upper Right Corner Click on the Gear Icon
• Click on Internet options
• go to Toolbars and Extensions and disable the unknown extensions
• Select the Advanced tab and click on Reset

• Restart Internet Explorer

Step 4: Undo the damage done by Koilk

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 Koilk, 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!!!

You must clean all your browser shortcuts as well. To do that you need to

• Right click on the shortcut of your favorite browser and then select properties.

• in the target field remove Koilk argument and then apply the changes.
• Repeat that with the shortcuts of your other browsers.
• Check your scheduled tasks to make sure the virus will not download itself again.

How to Permanently Remove Koilk Virus (automatic) Removal Guide

Please, have in mind that once you are infected with a single virus, it compromises your system 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 registry leftovers or temporary files.