How to remove Tapsnake, CronDNS, Dubfishicv pop-up ads

Have you noticed irritating ads on the Internet, flagged as “Tapsnake, CronDNS, Dubfishicv”? Did you see the name Adware anywhere else on the PC? If something similar happened lately – your computer is penetrated by an advertising program, and our item will help you to delete it.


What is pop-up ads

The tool that generates banners is called Adware. Advertising program can do nothing well, as it’s developed to achieve a sole goal: to drive you crazy. Well, the mere annoyance is not its real task, but it’s lightly achieved when the virus does what it does – displays ads. It gets into the device, it changes the settings of your browser and delivers you as much spam as it can and even more, making sure that you click at least on a few of them. Hackers receive a couple of cents for every click you’ve made, so you can see why the ads keep coming: it’s a gold mine. In the sections below, we will tell you how Adware infected the laptop and how you might guard it against similar viruses. In case you know everything that you need on that topic and just want to get rid of Adware ASAP – don't mind the other sections and go to the removal instructions.

Right after the infestation, "Tapsnake, CronDNS, Dubfishicv" alters the controls of the browsers. That's its most important function, as the main part of this fraud system is the fake search engine which takes over the browser when you download Adware. So, Adware changes the pre-set start page, as well as the default search engine and places the scammer’s website instead of them. Now you cannot use the well-known Yahoo, Bing, Google or another search you prefer – you will surf the Net via the miserable scammers' tool that displays ads fake pages pop-ups of all sorts and sizes. Adware also alters the controls of the shortcuts of your browsers so that even if you recover the default settings, you'll automatically open the untrusted search in the starting tab.

If you've already bothered to remove this virus, you might have realized that it returns, regardless of how many times you erased it. It occurs thanks to the virus' defensive algorithms, and we will unriddle to you how they function:

  • The easiest technique of protection is to create a system task on the restoration of the adware after its deletion. Such tasks aren’t typically utilized by regular PC owners, so Adware simply develops a task to see if it is running, and if it isn't – to download and install it again. The task verifies the virus' presence each time you reboot your PC, and that’s why Adware is so difficult to erase.
  • The second manner is very much like the previous one, but it employs the system registry instead of the system tasks. Scammers make a new entry to system's registry and you have to detect and erase it, which might be difficult. All other registry values are required for the PC to function, and by clearing any of them, you might bring serious harm to the OS.


How virus was installed in the system

To clarify everything, we’ll picture the process in total. 99% of the advertisement-oriented utilities are clones of each other, replicated millions of times and transferred to various fraudsters with lesser alterations made. One of the suchlike dudes purchased this one from an underground auction, set it up and uploaded it to file-exchanging services all over the Internet. That’s where you got it from, right? Okay, are you sure that you didn’t search for adware that will drive you mad? Possibly, you needed the best spoiling-it-all-up utility for the PC, and someone sent you a link to Adware downloader? Still wrong? Okay, then, it was another program that's actually good. Some free program from a not-so-famous company, or a hacked copy of a paid tool you're not going to purchase.

This method is called “affiliate installation”, and its essence is that hackers are merging the installers of 2-3 harmful programs and one helpful software to create one file. The primary peculiarity of this bundle is that its scheme prevents a victim from discovering the viruses inside of it. On one of the last stages, they show an offer to install extra programs, with all checkmarks filled and the mouse cursor is already hovering over “proceed”. And you clicked on it. It could be a little different: there could be the “manners of installation”. It's very simple: the installation for expert customers gives you the possibility to pick a folder for this software to be established, and how exactly you need it to be done. In case of Adware, if you clicked the offered manner of installation, you admit all the trash from the viral installer into the workstation laptop.

Methods to remove Adware

Method 1. Use special removal software

Method 2. Remove Adware manually

Step 1. Uninstall Adware from the operation system

Step 2. Remove Adware from the browser (Google Chrome/Mozilla Firefox/IE/Opera/Safari/Edge)


If you are MAC user, follow this guide How to remove virus from MAC

Now you realize how Tapsnake, CronDNS, Dubfishicv pop-ups works, and you know in which way it penetrated your computer. You know everything you have to, besides the very important thing: how to uninstall this adware. Let’s get to it. You can uninstall Adware with the help of two plain methods. The first one is what you have already tried to execute – removal in manual mode. We know how to make it easier, and below this part, you will see the hints on manual elimination. Its worst drawback is that you cannot remove many advertising tools with its help as it'll require many hours to do. We suggest to you another method: you can fully uninstall Adware within ten minutes via Spyhunter antivirus. This antivirus has a lot of pluses, and among them are high operation speed, 24/7 support service, the compatibility with many anti-viruses and decent signature database. It's time to stop trying to guard the PC with free software – try the real antivirus. Push the button below to download an unpaid scanner.

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Instructions for manual deletion

Step 1. Uninstall software from the system

Windows 7

1. Uninstall Adware from Control Panel

  • Start
  • Control Panel
  • Programs
  • Programs and Features
  • Uninstall a program
  • Select Adware and press Uninstall

2. Delete elements that stayed after uninstalling from Control Panel

  • C:\Program Files\Adware
  • C:\ProgramData\Adware
  • C:\Users\YOUR_USER\AppData\Roaming\Adware

3. Clean registry:

  • Click Start
  • Type Regedit.exe
  • Search for "Adware" and delete these elements


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Windows 10

1. On the field Search Windows type 'Control Panel'

2. Click Uninstall a program

3. Select Adware and press Uninstall


Windows 8

1. Point to the upper-right corner of the screen, move the mouse pointer down, and tap Search.

2. Enter control panel in the search box, and then click Control Panel.

3. Under View by:, select Large Icons, and then click Programs and features.

4. Click the program, and then click Uninstall.

5. Follow the instructions on the screen.

6. Delete Adware from Control Panel

  • Start
  • Control Panel
  • Programs
  • Programs and Features
  • Uninstall a program
  • Select Adware and press Uninstall

7. Remove elements like on Win7.


Step 2. Remove Adware from the browser

Internet Explorer

Step 1. Disable add-on:

  • Tools
  • Manage add-ons
  • Remove Adware

Step 2.Change homepage:

  • Tools
  • Internet Options
  • General
  • Home page
  • Put “about:blank”

Step 3. Change new tab page:

  • Tools
  • Internet Options
  • General
  • Tabs


Google Chrome

Step 1. Remove add-on:

  • Customize and Control Google Chrome
  • More Tools
  • Extensions
  • Remove Adware

Step 2. Change homepage:

  • Customize and Control Google Chrome
  • Settings
  • Open a specific page or set of pages
  • Delete all specific pages


Mozilla Firefox

Step 1. Delete add-on:

  • Open menu
  • Add-ons
  • Extensions
  • Remove Adware

Step 2. Change homepage:

  • Open menu
  • Options
  • General
  • Put “about:blank” into Home page field


Opera browser

Step 1. Disable add-on:

  • Open Opera;
  • Customize and Control Opera;
  • Extensions;
  • Choose Adware and press button "Remove from Opera"

Step 2. Change homepage:

  • Open Opera browser;
  • Customize and Control Opera;
  • Settings;
  • On Startup;
  • Open a specific page or set of pages;
  • Press button "Set pages" and change Homepage to your favorite one.



Step 1. Start Safari browser

Step 2. Display a menu of General Safari Settings

Step 3. Reset Safari...

Step 4. Press "Reset"


Microsoft Edge

Step 1. Delete the suspicious extensions.

  • Menu
  • Extensions
  • Choose unfamiliar extension
  • Press Uninstall

Step 2. Change homepage.

  • Go to the website of the search engine you want
  • Select More actions
  • Settings
  • View advanced settings
  • Change search engine
  • Select search engine you want and Set as default


Video how to reset browser and remove all extensions


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