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Wyvern ransomware virus. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Ransomware
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BTCWare cybercrime gang releases Wyvern ransomware variant

Wyvern ransomware

Wyvern virus is a variant of BTCWare ransomware, a malicious program that has been making rounds on the Internet for more than six months. BTCWare Wyvern ransomware has emerged on September 21st, replacing the previous version known as Nuclear.[1] The malware sneaks into victim’s computer using Trojan deception technique and encrypts all files using sophisticated encryption ciphers.

Just like previous BTCWare versions, Wyvern malware was named after the extension it uses to mark encrypted files. While scanning the system and looking for target data to encode, it also appends a specific extension after the original file extension. The extension typically matches this pattern:

.[email address]-id-[victim’s ID].wyvern

The current variant of Wyvern virus uses .[decryptorx@cock.li]-id-.wyvern extension for encrypted files. The email address provided in the extension is also presented in the ransom note, which the virus creates and saves in every folder containing some encrypted data.

The criminals want the victim to contact them via decryptorx@cock.li so that they could present the price of the decryption tool that can restore all files back to their initial state. That is nothing else but extortion, and we do not recommend paying the ransom.

Besides, trusting cyber criminals’ promises would be a bad idea because they can simply take your money and vanish without a trace. You won’t be able to track the criminals even if you pay because they only accept the payment in Bitcoin (cryptocurrency).

If your files were encrypted, we strongly recommend you to remove Wyvern virus first. Then you can use the data recovery instructions we added at the end of this article. Although the provided options might not necessarily help you to recover your files, it cannot hurt to try.

For Wyvern ransomware removal you should choose and install a powerful malware removal software (in case you did not have one before). Our team suggests using Reimage or Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus. Before you attempt to launch these programs, restart your PC in a Safe Mode (follow the directions added to this article).

Distribution techniques used to spread BTCware ransomware variants

BTCware ransomware samples are usually distributed via Blank Slate spam, a technique that is also used for Cerber and Locky ransomware distribution[2]. In other words, you can receive Wyvern, Nuclear or Aleta malware after opening a malicious file attached to an email that has an empty subject line and delivers no message.

Stay away from such attachments because opening them is equal to pushing a button that says “infect your computer now.” Usually, the attachment is a ZIP file with a JS or VBS file inside of it. The file itself isn’t ransomware, but opening it activates a code inside of it that is set to connect to the remote domain and download malware from it.

The code also executes the file as soon as the download is complete. Zondervirus.nl experts report[3] that .wyvern file extension virus uses a strong cipher to take files hostage, and without a data backup, data recovery might be impossible.

Remove Wyvern ransomware and recover encrypted files

Once ransomware compromises a computer, it is no longer safe to use it, so remove Wyvern virus without a wait. We strongly recommend using an anti-malware program to complete this task.

Manual ransomware removal is technically possible, but to perform it in real life you have to be an IT expert and know where ransomware tends to hide its files. Each virus is different, so we strongly recommend choosing a trustworthy anti-malware solution to cleanse your computer.

You can find comprehensive Wyvern removal guidelines down below. These directions will help you to prepare your PC for malware removal.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Wyvern ransomware virus. 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.
More information about this program can be found in Reimage review.
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Manual Wyvern virus Removal Guide:

Remove Wyvern using Safe Mode with Networking

Delete BTCWare Wyvern ransomware professionally: reboot your PC into Safe Mode with Networking to disable active malicious processes and then let your anti-malware software do its job.

  • 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 Wyvern

    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 Wyvern removal.

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

Remove Wyvern using System Restore

  • 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 Wyvern. 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 Wyvern removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Wyvern 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 Wyvern, you can use several methods to restore them:

Data Recovery using special software

There are some useful programs that might help you to recover .wyvern file extension files. One of them is Data Recovery Pro.

No ways to fully recover files as decryption tool isn't available (at the moment)

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Wyvern and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

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

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