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Tornado ransomware. How to remove? (Uninstall guide)

removal by Olivia Morelli - - | Type: Ransomware

Tornado ransomware appends .[dongeswas@tutanota.com].Tornado file extension to encrypted files

Showing Tornado ransomware

Tornado virus belongs to the crypto-malware[1] category of computer viruses since it infects random PC's and targets to encrypt personal files and, later on, demand a ransom. Once the virus is executed onto the system, it renders most of the file types useless by locking them with RSA[2] encryption algorithm. Consequently, all encrypted files get the .[dongeswas@tutanota.com].Tornado file extension. If the encryption is executed successfully, Tornado ransomware creates a .txt file in each folder, which contains at least one encrypted file.

The text file stands for a ransom note where ransomware developer “greets” the victim and outlines the current situation in which he or she is currently in. Although the text in Tornado ransom note may slightly vary, here's the initial version found by ransomware researchers:

All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail: helpcrypt@airmail.cc.You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files.In case of no answer in 48 hours write us to theese e-mails: supphelp@cock.li

Tornado is similar to many other file-encrypting ransomware regarding encryption and ransom transfer methods applied. Its developers ask the victim to contact them via email (helpcrypt@airmail.cc or supphelp@cock.li) ASAP to ask for a unique decryption code. The sooner the contact is established, the smaller the ransom is expected to be.

Currently, it's not clear how many Bitcoins[3] the Tornado ransomware virus demands, but it may vary from 0.5 to 3 Bitcoins depending on how many hours the victim hesitates to contact with the extortionists. However, it's not advisable to pay the ransom even if it's not that big. There's no guarantee that criminals do have a working decryption code or that they are going to send it to you once you transfer the ransom.

Tornado removal is the best option you have. At the moment of writing, 40 AV engines out of 66[4] are capable of detecting and immunizing this cyber threat. Thus, a reputable anti-virus with updated security definitions, for example, Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes will remove Tornado virus from the system. In many cases, Tornado ransomware is considered to be a variant of BTCWare ransomware because most AV engines identify them in the same way. However, the ransowmare analysts did not approve that.

The bad news is that Tornado removal will swipe all encrypted files away. The good news is that cyber security experts have already found Tornado decrypter that you can download from the Internet for free. If, however, it fails to work, there's a couple of alternative data recovery methods that you can use. 

Ransomware is executed via malicious email attachments

Although there's a handful of diverse virus distribution strategies, including drive-by-download, remote desktop flaws, malicious websites, ads, etc., malspam remains the most frequently used ransomware distribution technique.

Those who haven't received spam emails should be aware of various letters from unknown senders, which claim to deliver important documents (invoices, receipts) or files like .docs, .txt, .jpg, and similar. Usually, people have to enable Macros to open the malicious attachment, and that's where the trick lies. Enabling Macros drops the executable file of the ransomware, which immediately starts scanning the system and locking personal files stored on it.

Therefore, cyber security experts from novirus.co[5] strongly recommend people to pay close attention to the email messages that you open and, if you are not familiar with the sender, do not open the attachment. Double-check doubtful messages for grammar and type mistakes because authorities will never send an official message that contains errors in the name or subject. By the way, messages without body text should never be treated as serious. Empty text box signals spam immediately. If you noticed that your inbox is full of spam, you should report the senders as spam.

Tornado ransomware removal guide

Ransomware virus can hardly be removed manually due to the multiplicity of malicious files. Therefore, the only reliable way to remove Tornado ransomware virus is to run a full system scan with Reimage, Malwarebytes MalwarebytesCombo Cleaner, or Plumbytes Anti-MalwareMalwarebytes Malwarebytes program. Otherwise, you may leave some of the malicious files, which may download other malware to the system.

Ransomware researchers were quick to find the Tornado decrypter. Therefore, right after the removal of the virus, you will be able to recover all locked files by launching it.

If Tornado decrypter failed to recover some of the important files, try to apply alternative decryption methods that you can also find at the end of this post.

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What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove Tornado virus, follow these steps:

Remove Tornado using Safe Mode with Networking

If you cannot remove Tornado virus because it blocks your antivirus, you should reboot the system into Safe Mode with Networking:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Tornado

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Tornado removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Tornado using System Restore

If the first method failed, try these steps:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Tornado. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Tornado removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Tornado from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Tornado, you can use several methods to restore them:

Use Data Recovery Pro

If official Tornado decrypter failed to recover some or most of your files, you may try to use Data Recovery Pro:

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Tornado ransomware;
  • Restore them.

Check if Tornado leaves Shadow Explorer Copies

Most of ransomware virus deletes Shadow Volume Copies. Nevertheless, there are many cases when these copies were left intact and people were able to recover encrypted data by following these steps:

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Use a free Tornado decrypter

Cyber security experts have already found way to unlock files encrypted by Tornado decrypter. You can download it from the Internet for free and run a scan to find inaccessible data and restore the access to it. 

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Tornado and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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