Remove CryptoWall 4.0 Ransomware

CryptoWall 4.0 virus is a type of ransomware that uses file encryption in order to extort money from its victims. It threatened its target that merely paying the amount demanded would be the only way to restore or access those files again.

Threat Summary

Threat:CryptoWall 4.0
Brief Description:This ransom virus encrypts selected files on the computer and prompt user to pay for decryption key.


CryptoWall 4.0 is a virus that belongs to ransomware class. It locks your files and asks to pay a ransom for the private key. Unlike other ransomware virus, victims can easily determine what files are encrypted as it has extension name. CryptoWall 4.0 virus uses random code on encrypted files. This approach add burden to its victims. It makes even harder for them to know if what files are encrypted. Right after encryption, it changes the desktop background and shows the ransom message. It contains message on how to restore your files.

CryptoWall 4.0 states that your files have been encrypted. You can regain access to your files by paying the ransom. The amount demanded or the ransom is roughly $700. You have to settle this amount within 96 hours. Once you failed to pay such amount at given time frame, crooks will multiply the ransom amount by 2.

However, dealing with cyber crooks is just a complete waste of time and money. Even if you pay the amount ordered, your files are still encrypted. It was like allowing the intruder to profit from this online modus. You cannot really regain access to your files once payment was made. It was merely a false claimed. CryptoWall 4.0 in fact, has no any intent to deliver the private key that you need to decrypt your data.

Please be warned that CryptoWall 4.0 virus is a denial-of-access attack. It refrains victims from accessing to its own files to increase chances of paying the ransom. That way, CryptoWall 4.0 can profitably extort money from its victims.

CryptoWall 4.0 is a malicious code that often established in many windows system through spam email with malicious attachments. Therefore, never open an email from an unknown source no matter how decent it may seem. Meanwhile, to save your system from further damages that CryptoWall 4.0 can cause, feel free to use the removal steps on this page.

CryptoWall 4.0

Procedures to Remove CryptoWall 4.0

Removal steps on this page will help you get rid of the threat effectively using tools and virus scanners. Please make sure that you will carry out the guide in exact order.

Procedure 1: Scan Computer in Safe Mode Using Installed Anti-virus Program

1. First, we will try to remove Remove CryptoWall 4.0 Ransomware by running a virus scan under Safe Mode with Networking. To perform this task, please complete these procedures.

Start in Safe Mode with Networking (Windows XP/Vista/7 Instruction)

- Please restart the computer and just before Windows start, press F8 on your keyboard repeatedly. You will be presented with Advanced Options Menu.
- From the selections, choose Safe Mode with Networking. Please use keyboard's arrow up/down to navigate between selections and press Enter to proceed.


Start Windows 8 in Safe Mode with Networking

- Please restart the computer and as soon as it begins to start, please press Shift+F8 keys.
- Instead of seeing Advance Boot Options, Windows 8 will display Recovery Mode. Continue with the given steps until you reach Safe Mode function.
- Click on 'See advanced repair options'.


- Then, click on Troubleshoot.
- Next, please select Advanced options.
- On the next window, please choose Windows Startup Settings.
- Lastly, click on Restart button. Windows 8 will now restart and boot into Advanced Boot Option wherein you can run the system in Safe Mode with Networking.


2. Open your installed anti-virus programs and update it to the most recent version by automatically downloading necessary updates.

3. Thoroughly scan the computer and remove all identified threats. Do not restart or turn off the computer after the scan process. You still need to run another scan. Please follow the next procedure.

Procedure 2: Scan and remove CryptoWall 4.0 files with MalwareBytes Anti-Malware

To remove CryptoWall 4.0, download Malwarebytes Anti-Malware. This tool is effective in getting rid of Trojans, viruses and malware.

Download Removal Tool

1. After downloading, please install the program using the default settings.

2. At the end of the installation, please make sure that it will download necessary updates.

3. Once update has completed, MBAM will launch.

MBAM Scanner

4. Select SCAN from the top menu. Then, click on Threat Scan (Recommended) section.

5. Click on Start Scan to thoroughly scan the computer. Remove all threats detected by this anti-malware program after the process.

Procedure 3: Run Microsoft Safety Scanner to remove CryptoWall 4.0 components.

MS Safety Scanner is a free security tool that offers on-demand virus scanning and helps remove threats from the infected computer. It is a stand-alone program that works even with existing antivirus program.

Important: Each download of Microsoft Safety Scanner expires 10 days after the acquisition date. If this period lapses, you need to download the same program from the same location again. New download contains newer virus definition and database to detect and clean most recent viruses.

To use this tool in removing CryptoWall 4.0, please follow this procedure.

1. Download Microsoft Safety Scanner from official web site. Click on the button below.

Download Safety Scanner

2. Save the file to a convenient location such as Desktop.

3. Once the download completes, browse the folder and double-click on the file msert.exe. Icon for this file looks like this.

MS Safety Scanner Icon

4. If Windows prompts for a security warning and ask if you want to run the file, click on Run. For Windows Vista/7 users, you may right-click on the file and select Run as administrator from the selection.

Run as administrator

5. On initial run, the tool will display End User License Agreement, please accept the terms and click Next. Continue on the process until you reach the Scan Type window.

6. Select on Full scan to entire the system and detect any presence of CryptoWall 4.0. Then, click Next button to begin the scan process. Scanning may take a while, please be patient.

Full Scan

7. Once Microsoft Safety Scanner finished on scanning the computer, it will display the result. If it finds presence of CryptoWall 4.0 and other malware, the tool removes them automatically.

8. Click on Finish button to close the tool.

Recover CryptoWall 4.0 Encrypted Files

Use ShadowExplorer to Recover Files

Recovering CryptoWall 4.0 encrypted files using this tool may only be possible if the virus did not erased the Shadow Copies of files on your computer. Volume Shadow Service is a Windows feature and is a component of Windows Backup and System Restore. Backup data are kept automatically in the system after enabling System Restore. Therefore, you may never use this feature when System Restore not active on the computer.

1. Download the most recent version of ShadowExplorer from their official website. Click the button below.

Download ShadowExplorer

2. Install this program on your computer. It should initialize after the installation process. You may also double-click the created icon to run ShadowExplorer.

Click Icon

3. On main interface, click on the Drive Path at upper left corner to list all Volume Shadow Copies kept on your computer.

Select Drive

4. Select preferred time and date you wish to restore. It is suggested to select the most recent copy before the CryptoWall 4.0 infection.

5. Right-click on the folder you wish to restore. Then, click on Export.

Export Files

6. ShadowExplorer will prompt for the new location of files to recover. Please specify the path where you want to save copies of your files.

CryptoWall 4.0 Decryption Tool

At this time, there is no definite way to decrypt files encrypted by CryptoWall 4.0. We are waiting for decryption tool from various computer security developers. You will see update on this area as soon as CryptoWall 4.0 decryptor was made available.

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