DNS Changer is a Trojan trying to alter the DNS settings on the compromised machine in order to serve malicious purposes. Personal information theft and browser hijacks are often part of the DNS Changer attacks. Experts report that banker Trojans, TDSS rootkits and other malicious software has been used in several DNS Changer attacks in order to improve their spyware capabilities and lower the security of the targeted system.
DNS Changer Aliases: Windows DNS Changer, Trojan:W32/DNSChanger, FBI DNS Changer, DNS Changer Trojan, Doomsday Virus, DNSChanger, Ghost Click Malware, Win32.DNSChanger, DNS Changer Malware, DNS Changer Virus, Ghost Click Virus.
DNS Changer Distribution and Infection
Mostly, DNS Changer is distributed via links spread through the social networks. Recently, many DNS Changer attacks have been using TDSS rootkits to gain access to the targeted machine. Computers running Windows are the target of the DNS Changer attacks. By abusing the DNS settings, the attackers can transmit online traffic, which lets the DNS Changer a perfect tool in many different hijack-based attacks. For example, to cause redirects to phishing websites, disguised as legitimate ones. This way the DNS Changer can steal personal information and login credentials by requesting the user to log-in to his supposedly real account. The DNS Changer can also redirect the user’s browser to fraudulent web pages created to generate pay-per-click revenue for the authors of the attack.
DNS Changer can be installed by rootkits like TDL4 rootkit that may trigger other types of attacks on your computer. The security of your system should be considered majorly reduced until you remove the threat with a reputable AV product.
Experts have discovered examples of DNS Changer attacks where the settings of a communal modem or router have been changed, and the ones on a private computer. Users are advised to strong passwords and login names in order to avoid device hijacks and other, similar computer threats. Even if a machine itself is not infected by DNS Changer, it may experience the infection’s consequences if it uses infected routers.
DNS Changer – How to Protect Your System?
Since DNS Changer alters the DNS settings on the compromised machine, users may have to set them back to normal after the infection has been deleted. The different versions of DNS Changer use various methods to hide their presence on the affected computer. Some variants can harm certain drivers and if the user tries to restore them from backup copies the infection itself may get restored.
Here are a few suggestions on how to prevent DNS Changer infections:
- Make sure to use unique and long usernames and password when you create online accounts
- Pay attention to the activity of the other PCs in your network
- Be careful with PC threats that are disguised as legit programs and program updates
- Always use trustworthy AV products and keep them up-to-date
Spy Hunter FREE scanner will only detect the threat. If you want the threat to be automatically removed, you need to purchase the full version of the malware tool. Find Out More About SpyHunter Anti-Malware Tool
- Guide 1: How to Remove DNS Changer from Windows.
- Guide 2: Get rid of DNS Changer on Mac OS X.
- Guide 3: Remove DNS Changer in Google Chrome.
- Guide 4: Erase DNS Changer from Mozilla Firefox.
- Guide 5: Uninstall DNS Changer from Microsoft Edge.
- Guide 6: Remove DNS Changer from Safari.
- Guide 7: Eliminate DNS Changer from Internet Explorer.
- Guide 8: Disable DNS Changer Push Notifications in Your Browsers.
How to Remove DNS Changer from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove DNS Changer
Step 2: Uninstall DNS Changer and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by DNS Changer on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by DNS Changer there. This can happen by following the steps underneath:
Get rid of DNS Changer from Mac OS X.
Step 1: Uninstall DNS Changer and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove DNS Changer via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove DNS Changer files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as DNS Changer, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Remove DNS Changer from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Erase DNS Changer from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Uninstall DNS Changer from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Remove DNS Changer from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the DNS Changer will be removed.
Eliminate DNS Changer from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.
Remove Push Notifications caused by DNS Changer from Your Browsers.
Turn Off Push Notifications from Google Chrome
To disable any Push Notices from Google Chrome browser, please follow the steps below:
Step 1: Go to Settings in Chrome.
Step 2: In Settings, select “Advanced Settings”:
Step 3: Click “Content Settings”:
Step 4: Open “Notifications”:
Step 5: Click the three dots and choose Block, Edit or Remove options:
Remove Push Notifications on Firefox
Step 1: Go to Firefox Options.
Step 2: Go to “Settings”, type “notifications” in the search bar and click "Settings":
Step 3: Click “Remove” on any site you wish notifications gone and click “Save Changes”
Stop Push Notifications on Opera
Step 1: In Opera, press ALT+P to go to Settings
Step 2: In Setting search, type “Content” to go to Content Settings.
Step 3: Open Notifications:
Step 4: Do the same as you did with Google Chrome (explained below):
Eliminate Push Notifications on Safari
Step 1: Open Safari Preferences.
Step 2: Choose the domain from where you like push pop-ups gone and change to "Deny" from "Allow".