Severity scale:  
  (98/100)

Tunca ransomware. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Ransomware

Tunca ransomware – a malicious computer infection which appears to be in a development stage

Tunca ransomware
Tunca ransomware is a dangerous computer infection which is still in the development mode.

Tunca ransomware is a computer virus which relies on Microsoft .NET framework and it seems to be in the state of development. The cryptovirus was first discovered by a cybersecurity researcher named Leo.[1] This ransomware[2] acts exactly as other of its kind: once installed, Tunca virus performs the encryption process by using AES (advanced encryption standard). Once locked, files end up with the .tunca appendix. Furthermore, a pop-up window appears announcing about the secret invasion. However, this ransomware, unlikely from others, urges for 100 euros to be paid by Paysafecard[3] in order to receive the KGDecrypt key. Also, the crooks provide their lockify@protonmail.com email address to make contact with their victims. However, as the ransomware virus is not capable of locking files on the infected computer, it is clear that it hasn't been finished yet.

Name Tunca virus
Category Ransomware
Appendix .tunca
Developed by Microsoft .NET framework
Founder Leo
Ransom 100 euros
Email lockify@protonmail.com
Deletion Get Reimage to detect damaged objects

Once the user overcomes the Microsoft .NET framework error, the crooks give three options:

  • see error details;
  • continue;
  • quit.

However, if the user chooses the “Continue” button, files are re-encrypted again, and another .tunca extension is added to each locked file. Furthermore, if the victims of Tunca ransomware decide to pick the “Quit” option, nothing happens and files stay encrypted. Here you can see the ransom message:

Ooops, it seems like all of your files have been encrypted with AESencryption algorithm.

Can I get my files back?
-Yes, you can. But you need this following software :
KGDecrypt
– Without the software, no one can decrypt your files

How do I pay?
-Simply buy a 100€ Paysafecard
-Send message with the Paysafecard PIN to this account :
Lockify@protonmail.com
-Wait for us to confirm your payment
-Get the decryptor

However, there is a way to get a free decryptor!

How to get the free decryptor?
-Create a link on grabify that will download your victim the ransomware
-With this, infect at least 10 people
-Send proof to : Lockify@protonmail.com
-Get your decryptor

An interesting thing is that the cybercriminals also offer free decryption. However, it might not be that satisfying as it seems. In order to get the decryption tool, crooks require the victim to infect at least ten other users with this dangerous infection. We advise denying both paying and infecting other people. What we suggest is performing the Tunca ransomware removal with reputable tools only. Furthermore, try using Reimage to discover all malware-laden content.

The keys that are used by ransomware to encrypt and decrypt files are stored on remote servers. This hardens the decryption process even for tech-experts. However, that does not mean you have to agree with the crooks' solutions. No! After you remove Tunca virus, we suggest scrolling down this article and finding the data recovery methods. Even though these tools are third-party ones, they are still a better option than contacting the cybercriminals and risking to get scammed.

Note that, ransomware viruses can be extremely dangerous, especially, when they have other damaging abilities such as injecting other infections, placing rogue content in the system, avoiding the detection of antivirus programs, and so on. Tunca ransomware is also a threat you should get rid of as soon as possible. If you experience any ransomware-related signs such as encrypted files, rogue processes running, or the ransom message, you should take actions against the malicious activity immediately.

Email spam – ransomware's main distribution source

According to tech experts from Virusai.lt,[4] ransomware infections are most likely to come from rogue emails messages and their attachments, or links. Crooks inject malicious content to an URL which is placed inside the email letter or add a malware-laden file to the message itself. Be careful while opening suspicious-looking messages, or even better – do not open them at all. Send all rogue content straight to the trash section and delete it permanently.

Furthermore, there are some other sources that might spread ransomware infections. P2P networks and other secondary websites can be filled with potentially dangerous content. The only way to avoid it is staying cautious while browsing the web and entering various sites. However, you can increase the system's protection automatically by using reliable anti-malware tools. Besides, do not hesitate to invest in a reputable one!

Terminate Tunca virus

To remove Tunca virus, use the automatical elimination technique only. Specific anti-malware tools are created for malware elimination purposes. Furthermore, it is important to catch each infected component in the system. For this purpose, we offer to download and install a reliable computer tool such as Reimage, Malwarebytes MalwarebytesCombo Cleaner, or Plumbytes Anti-MalwareMalwarebytes Malwarebytes.

Later on, after you perform the Tunca ransomware removal, make sure you carry out some system backups and refresh your entire computer. After that, take a look at our below-provide data recovery methods. Make sure that you choose the most suitable software for you, otherwise, you might not reach wanted results. For example, if you want to use Shadow Explorer but the virus has erased Shadow Copies, better choose another method as this one is very likely not to work properly.

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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 Tunca virus, follow these steps:

Remove Tunca using Safe Mode with Networking

Safe Mode with Networking might allow you to disable the virus:

  • 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 Tunca

    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 Tunca removal.

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

Remove Tunca using System Restore

Perform these steps to turn on the System Restore feature:

  • 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 Tunca. 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 Tunca removal is performed successfully.

Bonus: Recover your data

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

Look thru the following methods and unlock your data.

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

Data Recovery Pro is used for file restoring:

Follow the below-given instructions to reach the best results.

  • 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 Tunca ransomware;
  • Restore them.

Using Windows Previous Versions feature might allow you to bring back some files:

This method might appear to be truly helpful if you enabled the System Restore feature before the cyber attack emerged.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Shadow Explorer tool might help you restore some data:

Use this tool to bring some encrypted files back. However, remember, that this method might not be useful if the ransomware virus corrupted or deleted Shadow Volume Copies of locked documents.

  • 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.

There is no official Tunca ransomware decryptor released yet.

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

About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

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References