Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Remove Cryptowall 4.0 Ransomware and Restore Encrypted FilesRemove Cryptowall 4.0 Ransomware and Restore Encrypted FilesRemove Cryptowall 4.0 Ransomware and Restore Encrypted Files

If your computer has been infected by Cryptowall 4.0 then you have a serious problem. It’s probably that by this time all of your files have acquired a strange file extension with random numbers and letters and are unusable. Your files are encrypted and this is the work of the virus.

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

These type of viruses are known as Ransomware and they will make your data unusable and blackmail you for the recovery key needed to access it. Cryptowall 4.0 will display the message about the terms of the ransom and it will try to scare you not to attempt any alternative methods of recovering your things. Don’t believe its lies. Your files will only be damaged if you delete some of the encrypted files, change their names or file extensions. None of the recovery methods included in this article will tamper with these, so rest assured that if everything else fails you can always choose to pay the ransom as a very last resort.

Should you actually pay the ransom demanded by Cryptowall 4.0?

Paying the ransom may seem like the safest way to recover your data, but it is far from it. Remember that you are dealing with criminals – people who have absolutely no obligation to keep their end of the bargain. In fact these types of viruses are usually handled by an automated software system and should any irregularity or bug occur there will be nobody to assist you. Also remember that any money paid to the hackers behind Cryptowall 4.0 will go towards the development of new and more advanced Ransomware – which could infect your computer again to milk you for more money! You should only ever considering paying this blackmail money if you have vital information still encrypted on your computer all other other recovery options were exhausted.

How to deal with Cryptowall 4.0

Dealing with this Ransomware is generally a two step process – first you need ot remove the ransomware itself and then you have to recover your files.

Unfortunately the hackers are right about one thing – the only way to decrypt the files is to obtain the key used in the ecryption process. Fortunately this is not the only option available. Instead of trying to decrypt the encrypted files we are going to try to restore the originals instead.

When Cryptowall 4.0 began encrypting your files it deleted the originals and left these new encrypted copies in their place. Recovering these deleted files is very similar to what you would do if you wanted to recover a file you accidentally deleted yourself. You will find the detailed instructions in the guide below. Remember that the soon you act and the less files were written on the HDD the better your chances

Name Cryptowall 4.0
Type  Ransomware
Danger Level High. There are very few things more dangerous currently that you might encounter on the internet.
Symptoms Your files are locked and encrypted.
Distribution Method Through a different virus, most often a Trojan Horse.
Detection Tool Malware and Adware are notoriously difficult to track down, since they actively try to deceive you. Use this professional parasite scanner to make sure you find all files related to the infection.Sponsored

Remove Cryptowall 4.0

Readers are interested in:

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

The first thing to do is a reboot in Safe Mode. If you already know how to do it, just skip this and proceed to Step 2. If you do not know how to do it, continue reading:

For Windows 98, XP, Millenium and 7: 

Restart your computer. To be sure you don’t miss the time when you need to press it, just spam F8 as soon as the PC starts booting. Then choose Safe Mode With Networking.

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

For W8 and 8.1:

Click the Start button, then Control Panel —> System and Security —> Administrative Tools —> System Configuration.Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Then check the Safe Boot option and click OK.  Click  Restart in the pop-up.

For W10:

  1. Open the Start menu.
  2. Click the power button icon in the right corner of the Start menu to show the power options menu.
  3. Press and hold down the SHIFT key on the keyboard and click the Restart option while still holding down the SHIFT key.

W10 will perform the reboot. Next do the following:

Click the Troubleshoot icon, then Advanced options —> Startup Settings. Click Restart.
After the reboot click on Enter Safe Mode With Networking (Fifth Option).

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Hold the Windows Key and R and copy + paste the following, then click OK:

notepad %windir%/system32/Drivers/etc/hosts

A .txt file will open – don’t type or change it. If you are hacked and someone has access to your PC, there will be a bunch of other IPs connected to you at the bottom. This is what a hosts file looks like:

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

If there are a bunch of strange IPs connecting to you below “Localhost” you may be hacked, and it’s best to ask us in the comments for directions.

Now hold the windows Key and R again but type %temp% in the field and hit enter. Delete everything in that directory.

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Right click on each of the malware processes separately and select Open File Location. Also, End the process after you open the folder. Just to make sure we don’t delete any programs you mistakenly took for a malware, copy the folders somewhere, then delete the directories you were sent to. There’s a good chance Cryptowall 4.0 is hiding somewhere in here.


This is perhaps the most important and difficult step, so be extremely careful. Doing this can damage your PC significantly if you make a big mistake. If you are not feeling comfortable, we advise you to download a professional Cryptowall 4.0 remover. Additionally, accounts connected to your credit cards, or important information, may be exposed to the virus.

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files


Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Take a look at the following things:

Type msconfig in the search field and hit enter: you will be transported to a Pop Up window. 

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Go in the Startup tab and Uncheck anything that has “Unknown” as Manufacturer.

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files  

How to Restore Encrypted files infected with Cryptowall 4.0

There is only one known way to remove this virus successfully, barring actually giving in the to the demands of the people who created the virus – reversing your files to a time when they were not infected.

There are two options you have for this:

The first is to do a full system restore. This can take care of the file extension for you completely. To do this just type System Restore in the windows search field and choose a restore point. Click Next until done.

Remove Cryptowall 4.0 Ransomware and Restore Encrypted Files

Your second option is a program called Recuva

Go to the official site for Recuva and download it from there – the free version has everything you currently need.

When you start the program select the files types you want to recover. You probably want all files.

Next select the location. You probably want Recuva to scan all locations.

Now click on the box to enable Deep Scan. The program will now start working and it may take a really long time to finish – maybe even several hours if your HDD is really big, so be patient and take a break if necessary.

You will now get a long list of files to pick from. Select all relevant files you need and click Recover.

Did we help? Found an alternative solution? Share your feedback with us so we can help other people in need!


About the author


Nathan Bookshire


  • Hello Rahul, if you followed our instructions and still you were not able to recover your files, then sadly not much could be done. The methods we described are especially contingent on how much time has actually passed since the initial encryption of your files.

  • To be honest, I tried finding any information that would help you, but no one seems to know. The ransom message states that you need not only the key, but the decryption software as well. We really tried (honestly!) finding anything that can help you, but there just doesn’t seem to be anything you can do just with the key… someone has to created a software that can open the decryption.

Leave a Comment