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Remove Questdns.com virus (Virus Removal Guide) - Chrome, Firefox, IE, Edge

removal by Jake Doevan - - | Type: Browser hijacker

Should I consider Questdns.com search service dangerous?

Questdns.com virus is a nasty computer program that is designed to hijack unprotected computers[1] and affect browsers installed on them. This pesky program aims to compromise web browsers to make them launch Questdns.com site at random times. Google Safe Browsing[2] feature identifies this URL as potentially dangerous, warns that it might contain harmful programs, and advises not to visit it. Your browsers might start redirecting you to the indicated website after installing a program called QuestDNS Desktop, which is known to be a potentially unwanted program (PUP), too. We decided to analyze legal documents provided on the site that this shady application promotes, and we found some very suspicious details about it. It turns out that Questdns.com hijacker collects user’s IP address[3], type of OS and browser used, a list of search queries and similar information. Such information allows authors of this browser hijacker determine what kind of content interests you. Using collected data, this browser hijacker might start generating targeted ads and send them to you in pop-up ads and banners, although the majority of sponsored content will be provided via Questdns.com search results.

QuestDNS.com virusOnce the user attempts to enter QuestDNS.com site, such security warning shows up - do not ignore it!

Questions about Questdns.com virus

Please take note that Questdns.com malware authors claim no responsibility for anything that happens on external websites, so take this as a hint that the indicated search engine is untrustworthy. The creators of it aim to advertise third-parties but refuse to review content they upload, and we believe that it is not a professional behavior. Besides, you can quickly enter websites that you promised yourself to stay away from. These sites are likely to be filled with harmful content – the alert from Google Safe Browsing confirms that. Therefore, if privacy and computer protection[4] matters to you, better remove Questdns.com hijacker right away. Use anti-spyware program for that (such as ReimageIntego), or rely on yourself and use Questdns.com removal instructions (provided below) to delete the infection.

Ways to get infected with a browser hijacker

There are numerous ways how browser hijackers can sneak into your computer. You can come across their official websites when exploring annoying ads and banners on third-party websites, or if you have an adware-type program installed on your PC. However, in the majority of cases, users install this browser hijacker without having any intentions to do it. It happens because it spreads in software packages that are also called software bundles[5]; almost every free program available online has several additional programs attached to it, and in order to install your selected piece of software without obtaining any extra programs, we suggest choosing Custom or Advanced settings when installing it on the system. This configuration will provide you with a list of extra items bundled with your download and will advise you to install all of them. Please, do not agree to do so! These extra items typically are highly annoying programs that can affect the way you use your PC on a daily basis. Once you deselect them, proceed with the installation.

What is the best way of removing Questdns.com hijacker?

You should definitely remove Questdns.com virus because it won’t let you browse the Internet safely, besides, it can cause other issues such as system slowdowns and similar problems. Another reason to get rid of it is the fact that it tracks your browsing habits and delivers targeted ads just to draw your attention and make you click on them. It seems that once you decide to click on them, Questdns.com redirect virus immediately opens a pre-determined website that it seeks to promote. As we said, such sites can be dangerous, so we can only advise you to stay away from them by removing the program that seeks to redirect you to them. To find and uninstall the problematic software, use Questdns.com removal instructions provided down below.

You may remove virus damage with a help of ReimageIntego. SpyHunter 5Combo Cleaner and Malwarebytes are recommended to detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

To remove Questdns.com virus, follow these steps:

Uninstall Questdns.com from Windows systems

You should find QuestDNS Desktop software installed on your computer. Do not let it stay there for any longer – delete it ASAP.

  1. Click Start Control Panel Programs and Features (if you are Windows XP user, click on Add/Remove Programs). Click 'Start -> Control Panel -> Programs and Features' (if you are 'Windows XP' user, click on 'Add/Remove Programs').
  2. If you are Windows 10 / Windows 8 user, then right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel and Uninstall a Program. If you are 'Windows 10 / Windows 8' user, then right-click in the lower left corner of the screen. Once 'Quick Access Menu' shows up, select 'Control Panel' and 'Uninstall a Program'.
  3. Uninstall Questdns.com and related programs
    Here, look for Questdns.com or any other recently installed suspicious programs.
  4. Uninstall them and click OK to save these changes. Right click on each of suspicious entries and select 'Uninstall'
  5. Remove Questdns.com from Windows shortcuts
    Right click on the shortcut of Mozilla Firefox and select Properties. Right click on browsers' icon and select 'Properties'
  6. Go to Shortcut tab and look at the Target field. Delete malicious URL that is related to your virus. Select 'Shortcut' tab and delete 'http://isearch.babylon.com...' or other suspicious URL

Repeat steps that are given above with all browsers' shortcuts, including Internet Explorer and Google Chrome. Make sure you check all locations of these shortcuts, including Desktop, Start Menu and taskbar.

Delete Questdns.com from Mac OS X system

If your macOS is displaying some infection symptoms, proceed with the following guide:

Remove Questdns.com from Applications folder:

  1. From the menu bar, select Go > Applications.
  2. In the Applications folder, look for Questdns.com-related entries.
  3. Click on the app and drag it to Trash (or right-click and pick Move to Trash)Uninstall from Mac 1

To fully remove Questdns.com, you need to access Application Support, LaunchAgents, and LaunchDaemons folders and delete relevant files:

  1. Select Go > Go to Folder.
  2. Enter /Library/Application Support and click Go or press Enter.
  3. In the Application Support folder, look for any dubious entries related to Questdns.com and then delete them.
  4. Now enter /Library/LaunchAgents and /Library/LaunchDaemons folders the same way and terminate all the Questdns.com-related entries.Uninstall from Mac 2

Remove Questdns.com from Internet Explorer (IE)

If your IE browser was affected by this highly annoying program, fix it by completing these steps.

Remove dangerous add-ons:

  1. Open Internet Explorer, click on the Gear icon (IE menu) on the top-right corner of the browser
  2. Pick Manage Add-ons.
  3. You will see a Manage Add-ons window. Here, look for Questdns.com and other suspicious plugins. Click on these entries and select Disable.Remove add-ons from Internet Explorer

Change your homepage if it was altered:

  1. Open IE and click on the Gear icon.
  2. Select Internet Options.
  3. In the General tab, delete the Home page address and replace it by your preferred one (for example, Google.com).
  4. Click Apply and then select OK.Reset IE homepage

Delete temporary files:

  1. Press on the Gear icon and select Internet Options.
  2. Under Browsing history, click Delete…
  3. Select relevant fields and press Delete.Clear temporary files from Internet Explorer

Reset Internet Explorer:

  1. Click on Gear icon > Internet options and select Advanced tab.
  2. Select Reset.
  3. In the new window, check Delete personal settings and select Reset again to complete Questdns.com removal.Reset Internet Explorer

Erase Questdns.com virus from Microsoft Edge

Delete unwanted extensions from MS Edge:

  1. Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
  2. From the list, pick the Questdns.com-related extension and click on the Gear icon.
  3. Click on Uninstall at the bottom.Remove extensions from Edge

Clear cookies and other browser data:

  1. Click on the Menu (three horizontal dots at the top-right of the browser window) and select Privacy & security.
  2. Under Clear browsing data, pick Choose what to clear.
  3. Select everything (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.Clear Edge browsing data

Reset MS Edge if that above steps did not work:

  1. Press on Ctrl + Shift + Esc to open Task Manager.
  2. Click on More details arrow at the bottom of the window.
  3. Select Details tab.
  4. Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.Reset MS Edge

If this solution failed to help you, you need to use an advanced Edge reset method. Note that you need to backup your data before proceeding.

  1. Find the following folder on your computer: C:\\Users\\%username%\\AppData\\Local\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  2. Press Ctrl + A on your keyboard to select all folders.
  3. Right-click on them and pick DeleteAdvanced MS Edge reset 1
  4. Now right-click on the Start button and pick Windows PowerShell (Admin).
  5. When the new window opens, copy and paste the following command, and then press Enter:

    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\\AppXManifest.xml” -VerboseAdvanced MS Edge reset 2

Instructions for Chromium-based Edge

Delete extensions from MS Edge (Chromium):

  1. Open Edge and click select Settings > Extensions.
  2. Delete unwanted extensions by clicking Remove.Remove extensions from Chromium Edge

Clear cache and site data:

  1. Click on Menu and go to Settings.
  2. Select Privacy and services.
  3. Under Clear browsing data, pick Choose what to clear.
  4. Under Time range, pick All time.
  5. Select Clear now.Clear browser data from Chroum Edge

Reset Chromium-based MS Edge:

  1. Click on Menu and select Settings.
  2. On the left side, pick Reset settings.
  3. Select Restore settings to their default values.
  4. Confirm with Reset.Reset Chromium Edge

Eliminate Questdns.com from Mozilla Firefox (FF)

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select Questdns.com and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Change your homepage if it was altered by virus:
    Click on the menu (top right corner), choose Options General.
  4. Here, delete malicious URL and enter preferable website or click Restore to default.
  5. Click OK to save these changes. When in 'General' tab, delete malicious URL from 'Home Page' section or click on 'Restore to Default' button. Click 'OK' to save changes
  6. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select 'Troubleshooting Information'
  7. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete Questdns.com removal. Click on 'Reset Firefox' button for a couple of times

Get rid of Questdns.com from Google Chrome

Chrome is probably one of the most desirable target for all browser hijackers. If it keeps opening QuestDNS.com search engine for you, remove all associated web browser extensions this way:  

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select Questdns.com and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Change your homepage and default search engine if it was altered by your virus
    Click on menu icon and choose Settings.
  4. Here, look for the Open a specific page or set of pages under On startup option and click on Set pages. After clicking on menu and 'Settings', select 'Set pages'
  5. Now you should see another window. Here, delete malicious search sites and enter the one that you want to use as your homepage. Click 'X' to remove malicious URLs
  6. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  7. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  8. Reset Google Chrome
    Click on menu icon on the top right of your Google Chrome and select Settings.
  9. Scroll down to the end of the page and click on Reset browser settings. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  10. Click Reset to confirm this action and complete Questdns.com removal. Click on 'Reset' button to complete your removal

Uninstall Questdns.com from Safari

  1. Remove dangerous extensions
    Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for Questdns.com or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Change your homepage if it was altered by virus:
    Open your Safari web browser and click on Safari in menu section. Here, select Preferences as it was displayed previously and select General.
  4. Here, look at the Homepage field. If it was altered by Questdns.com, remove unwanted link and enter the one that you want to use for your searches. Remember to include the "http://" before typing in the address of the page. When in 'General', delete malicious URL and enter your desired domain name
  5. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and select 'Reset Safari...'
  6. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete Questdns.com removal process. Select all options and click on 'Reset' button

Access your website securely from any location

When you work on the domain, site, blog, or different project that requires constant management, content creation, or coding, you may need to connect to the server and content management service more often. The best solution for creating a tighter network could be a dedicated/fixed IP address.

If you make your IP address static and set to your device, you can connect to the CMS from any location and do not create any additional issues for the server or network manager that needs to monitor connections and activities. VPN software providers like Private Internet Access can help you with such settings and offer the option to control the online reputation and manage projects easily from any part of the world.

 

Recover files after data-affecting malware attacks

While much of the data can be accidentally deleted due to various reasons, malware is one of the main culprits that can cause loss of pictures, documents, videos, and other important files. More serious malware infections lead to significant data loss when your documents, system files, and images get encrypted. In particular, ransomware is is a type of malware that focuses on such functions, so your files become useless without an ability to access them.

Even though there is little to no possibility to recover after file-locking threats, some applications have features for data recovery in the system. In some cases, Data Recovery Pro can also help to recover at least some portion of your data after data-locking virus infection or general cyber infection. 

 

About the author
Jake Doevan
Jake Doevan - Computer technology expert

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References

  1. Ohio says:
    March 16th, 2017 at 9:43 am

    I am afraid. QuestDNS.com virus is in my system!

  2. summervibe says:
    March 16th, 2017 at 9:44 am

    I deleted it seconds ago – thanks, 2-spyware. You provide very detailed tutorials! I love it.

  3. Danszel says:
    March 16th, 2017 at 9:44 am

    I no longer have arguments against using anti-spyware program. It seems that I need one…

  4. juryj says:
    March 16th, 2017 at 9:45 am

    very suspicious search engine, better try to evade it

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