How to remove Wyvern virus and restore encrypted files

Wyvern ransomware virus

The article is dedicated to virus called Wyvern which gets onto users' computers around the world, and corrupts the data. In this item we've gathered full info on Wyvern's essence, and how to delete Wyvern from your computer. Besides, we'll tell you how to get back the cyphered files and is it possible.

Wyvern is a version of BTCWare virus. It's a dangerous software getting into computers mainly via Trojans and phishing e-mails. Sometimes fraudsters use exploits to take control over the system, but they are speedily fixed. After the infection, ransomware examines the hard disc, determines the quantity of files for encryption and their general price. Currently, any new virus knows how to cypher image, audio, text and video files in all popular formats. Wyvern corrupts all files and adds HELP.hta information file to the desktop. All software on PC will be unaffected because criminals are interested only in information. Encryption is carried out through famous RSA-2048 algorithms, and its complexity is so high that decipherment of information with no key is impossible. This is the ground for unbelievable efficiency of this sort of viruses in last years: common customer, even if he has a very high experience in suchlike things, won't ever decrypt the files, and will have to pay the price. The only method to restore files is to hack the scam webpage and retrieve the master key. Also there's a way to retrieve encryption keys via defects in viruse's program code. The encrypted files get .[email]-id-[id].wyvern extension, and requires between 500 and 1500 $ for data recovery.

The knowledge of computers is extremely substantial in our century, since it assists you to defend the workstation from computer viruses. Statistically, 90% of users understand the significance of PC literacy only after ransomware infection. To defend your data, you need to keep in mind these three elementary principles:

    • Take notice to the pop-up windows. One of the easiest ways of information restoration is the recovery through Shadow Copies, so scammers have included the removal of those copies in the default features of malware. Anyway, deletion of shadow copies requires admin rights and user's acceptance. If you'll stop for few seconds before confirming the dialogue box, it may save your files and your money.
    • Do not disregard the red flags that your computer displays. File encryption is a complicated act that consumes a high amount of computer resources. If you mention a noticeable reduction in PC power or detect a weird string in the Process Manager, you can switch off the machine, launch it in safe mode, and run the antivirus. This, if the laptop is really infected, will guard some of your files.
    • Be cautious with the messages which contain something more than a message. If you don't know the user who send an e-mail and it notifies about earning some prize, a lost package or anything like that, this could be a fraud message. The other popular sort of scam messages is a "business messages". lawsuits, summaries, Bills for goods and services, reports and similar specific information do not come accidentally, and the addressee should know the person who sent it. In all other cases it is a scam.

Ransomware deletion is not the happy end - it's just a first move from many until the full file recovery. To recover the data you will have to read the instructions in the following section of this article. To uninstall the ransomware, you have to load the computer at safe mode and check it via AV-tool. High class ransomware can't be uninstalled even via AV-program, and have many effective mechanisms of defense. The most effective ransomware defensive manner is the uninstalling of information in case of data restoration or virus deletion attempt. This is very unwanted, and the below part will assist you to avoid it.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner


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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

How to decrypt files

After erasing the virus from the computer, you should decrypt the encrypted information. Actually, this is not about decryption, because the encryption manners owned by fraudsters are very complex. Generally, to get back the data, you should seek assistance on targeted forums or from renowned malware fighters and antivirus software vendors. If you choose the independent file restore - read this entry, which shows all the most efficient manners.

To restore information, follow the article about files decryption.

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