.wtdi File Virus – Remove .NET CryptoWall and Restore Files

This article will explain what is .wtdi ransomware and help you remove the .NET CryptoWall.exe ransomware plus restore encrypted files on your computer.

A ransomware virus believed to imitate the notorious CryptoWall and is written in .NET has appeared in the wild. The virus uses the .wtdi file extension which it adds to the files encrypted by it, after which changes the wallpaper on the infected computer with a message in red bold letters, reportedly written in Russian. The malicious files of the fake CryptoWall ransomware virus have a rest in peace (RIP) icon. In case your computer has been infected by this ransomware infection, we advise reading the following material.

Threat Summary

Name	.wtdi Virus
Type	Ransomware, Cryptovirus
Short Description	The ransomware encrypts the files on the infected PC’s asking a ransom to be paid to get them back.
Symptoms	Encrypts the files on the infected computer and changes the wallpaper with request to contact the crooks via ICQ. Files are appended the .wtdi file extension to them.
Distribution Method	Spam Emails, Email Attachments, Executable files
Detection Tool	See If Your System Has Been Affected by .wtdi Virus Download Malware Removal Tool
User Experience	Join Our Forum to Discuss .wtdi Virus.
Data Recovery Tool	Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

CryptoWall .wtdi – How Does It Infect

The primary method of infecting victims with this ransomware virus is via taking advantage of the inexperienced users by sending massive e-mail spam. The messages within the sent e-mails contain deceptive messages that aim to convince the victim to either click on a web link that causes a malicious redirect or open a malicious e-mail attachment. E-mails may have deceptive content, like the following:

The web link in the example above, then leads to a fake web page of DHL which automatically triggers a download of a .zip archive in which the payload of viruses, like the .wtdi CryptoWall may be contained in loaders. These loader type of files, when opened may extract the payload of the virus on the infected computer.

Other methods by which you could become a victim of the CryptoWall .wtdi ransomware virus are by downloading fake setups, clicking on malicious web links posted on suspicious sites, or downloading fake updates or installers of software.

CryptoWall .wtdi File Virus – More Information

During the infection process, the loader file downloaded from the spam e-mails or other distribution methods may drop the main payload file, named CryptoWall.exe as reported in VirusTotal:

Then, the ransomware may set the file to run automatically on Windows start-up. This is achievable by modifying the Windows Registry Editor, more specifically the following sub-keys:

• Run
• RunOnce

In those sub-keys, value strings with custom data are added. They may have random names, or the name of the executable, in this case CryptoWall. The malicious string has the location of the CryptoWall.exe file.

After this has completed, the .wtdi file virus may also delete the shadow volume copies on the infected computer. This is achievable by executing the vssadmin command in administrative Windows mode. This command is responsible for deleting those copies and eliminating all of the chances to retrieve the encrypted files via this method. The command is in different parameters, like the image below displays:

Other activity of the CryptoWall.exe .wtdi ransomware infection includes the obtaining of various system information, such as the Windows version, the IP address and other system details. In addition to this, the virus file of the .wtdi ransomware may also establish connection to multiple different third-party websites, that may eventually prove to download more malicious files on the infected computer, besides just transfer file encryption and decryption keys.

How Does CryptoWall .wtdi Encrypt Files

For the encryption process, the CryptoWall ransomware virus uses multiple different techniques by which it encrypts the files on compromised computers. The main files that are targeted for encryption by this CryptoWall imposter variant are:

• Documents.
• Music.
• Videos.
• Audio files.
• Archives.
• Disk image files.
• Other important and often used file types.

After the virus completes the encryption process, the files are rendered no longer able to be opened. This results in them being added the .wtdi file extension. The files may look like the following:

After the encryption process by this ransomware virus has already finished, this infection then drops it’s ransom note in Russian:

Translation:

In general, litter. But we’re a little pissed off and encrypted all your documentation. If you want to decipher them, you need to pay. how
It is said that only the mouse in the mousetrap is free of charge =)) Be nice and
Pay. Or you will not see your files =)
Here is the account number: UNIQUEID
And this is the connection with us: ICQ
We’ll say how much will the decoder cost …

Remove CryptoWall Imposter and Restore .wtdi Encrypted Files

For the removal of this ransomware virus, we advise following the instructions below. Since this virus may create multiple files in unknown Windows locations, malware researchers recommend hunting it down automatically by using an advanced anti-malware software. Such will also protect your computer In the future as well.

In case you are interested in restoring your encrypted files, we would suggest you to check this article regularly, since malware researchers may soon develop a decrypter for this virus. In the meantime, focus on alternative tricks to restore the files, like the ones we suggested below. They aim to help you restore at least some of the files encrypted by this ransomware virus.

Manually delete .wtdi Virus from your computer

Note! Substantial notification about the .wtdi Virus threat: Manual removal of .wtdi Virus requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove .wtdi Virus files and objects

Boot Your PC Into Safe Mode

1. For Windows 7,XP and Vista. 2. For Windows 8, 8.1 and 10. Fix registry entries created by .wtdi Virus on your PC.

For Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

4. Log on to your computer using your administrator account

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Step 1: Open the Start Menu

Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

Step 5: After the Advanced Options menu appears, click on Startup Settings.

Step 6: Click on Restart.

Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

Some malicious scripts may modify the registry entries of your computer to change different settings. This is why manual clean up of your Windows Registry Database is strongly recommended. Since the tutorial on how to do this is a bit lenghty, we recommend following our instructive article about fixing registry entries.

2.Find malicious files created by .wtdi Virus on your PC

Find malicious files created by .wtdi Virus

1. For Windows 8, 8.1 and 10. 2. For Windows 7,XP and Vista.

For Newer Windows Operating Systems

Step 1:

On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

Step 2:

Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.

Step 3:

Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:

N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.

For Older Windows Operating Systems

In older Windows OS’s the conventional approach should be the effective one:

Step 1:

Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

Step 2:

After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.

Step 3:

After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.

Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.

Automatically remove .wtdi Virus by downloading an advanced anti-malware program

1. Remove .wtdi Virus with SpyHunter Anti-Malware Tool and back up your data

Remove .wtdi Virus with SpyHunter Anti-Malware Tool

1. Install SpyHunter to scan for and remove .wtdi Virus.2. Scan with SpyHunter to Detect and Remove .wtdi Virus. Back up your data to secure it against infections and file encryption by .wtdi Virus in the future.

Step 1:Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

It is highly recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter.

Step 2: Guide yourself by the download instructions provided for each browser.
Step 3: After you have installed SpyHunter, wait for it to automatically update.

Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.

Step2: After SpyHunter has finished scanning your PC for any .wtdi Virus files, click on the ‘Fix Threats’ button to remove them automatically and permanently.

Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

Back up your data to secure it against attacks in the future

IMPORTANT! Before reading the Windows backup instructions, we highly recommend to back up your data automatically with cloud backup and insure it against any type of data loss on your device, even the most severe. We recommend reading more about and downloading SOS Online Backup .

SOS Online Backup

2. Restore files encrypted by .wtdi Virus

Restore Files Encrypted by .wtdi Virus

Ransomware infections like .wtdi Virus aim to encrypt your files using an encryption algorithm which may be very difficult to directly decrypt. This is why we have suggested several alternative methods that may help you go around direct decryption and try to restore your files. Bear in mind that they may not be 100% effective but they may help you little or a lot in some situations.

Method 1: Scanning your drive’s sectors by using Data Recovery software.
Another method of restoring your files is by trying to bring back your files via data recovery software. Here are some suggestions for preferred data recovery software solutions:

• Stellar Phoenix Data Recovery Technicians License(Pro version with more features)
• Stellar Phoenix Windows Data Recovery
• Stellar Phoenix Photo Recovery

Method 2: Trying Kaspersky and EmsiSoft’s decryptors.
If the first method does not work, we suggest trying to use decryptors for other ransomware viruses, in case your virus is a variant of them. The two primary developers of decryptors are Kaspersky and EmsiSoft, links to which we have provided below:

• Kaspersky Decryptors
• Emsisoft Decryptors

Urgent! It is strongly advisable to first remove the .wtdi Virus threat before attempting any decryption, since it may interfere with system files and registries. You can do the removal yourself just in 5 minutes, using an advanced malware removal tool.

Method 3: Using Shadow Explorer

To restore your data in case you have backup set up, it is important to check for shadow copies in Windows using this software if ransomware has not deleted them:

• Shadow Explorer

Method 4: Finding .wtdi Virus decryption key while it communicates it via a network sniffing software.

Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key. See how-to instructions below:

Instructions on How to Find Decryption Key for Files Encrypted By Ransowmare

Optional: Using Alternative Anti-Malware Tools

Remove .wtdi Virus Using Other Alternative Tools

STOPZilla Anti Malware

1. Download and Install STOPZilla Anti-malware to Scan for And Remove .wtdi Virus.
Step 1: Download STOPZilla by clicking here.
Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.

Step 3: After you have downloaded the setup, simply open it.
Step 4: The installer should appear. Click on the ‘Next’ button.

Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.

Step 6: Review and click on the ‘Install’ button.

Step 7: After the installation process has completed click on the ‘Finish’ button.

2. Scan your PC with STOPZilla Anti Malware to remove all .wtdi Virus associated files completely.
Step 1: Launch STOPZilla if you haven’t launched it after install.
Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.

Step 3: After the removal of all threats and associated objects, you should Restart your PC.

Vencislav Krustev

A network administrator and malware researcher at SensorsTechForum with passion for discovery of new shifts and innovations in cyber security. Strong believer in basic education of every user towards online safety.

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