.ENCRYPTED Virus (Crypren Ransomware) – Remove + Restore Files

.ENCRYPTED Virus (Crypren Ransomware) – Remove + Restore Files

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This article has been created in order to help you by explaining how to remove the .ENCRYPTED files virus from your computer and how to restore files encoded by Crypren ransomware on your PC.

The Crypren ransomware, which previously used the .encrypted file suffix it adds to the encoded files of the computers infected by it, has been reported by security researchers to have come back in a new version, using the .ENCRYPTED file extension. The ransomware virus this time demands victims to pay the sum of around 37 USD in order to get their files to be working again and it also drops a ransom note file, named READ_THIS_TO-DECRYPT.html, which contains detailed ransom instructions on how to make the ransom payoff. In case your computer has been infected by the Crypren ransomware, recommendations are to read this article and learn how to remove this virus from your PC and how to restore files, encrypted by it on your computer.

Threat Summary

NameCrypren Ransomware
TypeRansomware, Cryptovirus
Short DescriptionEncrypts the files on your computer and then asks to pay 37 dollars to recover them.
SymptomsThe virus sets the .ENCRYPTED file extension to the encrypted files and then drops a ransom note, called READ_THIS_TO_DECRYPT.html with instructions to pay the ransom.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by Crypren Ransomware


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Crypren Ransomware.
Data Recovery ToolWindows 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.

Crypten .ENCRYPTED Files Virus – Distribution Means

The .ENCRYPTED variant of the Crypren Ransomware has been reported to be spread via multiple different methods. Similar to the other ransomware viruses, Crypren ransomware may be spread via malicious spam e-mails, carrying malicious attachments or legitimate attachments, combined with malicious infection code. The usual pretext for those attachments to be spread is via a purchase of a product which you are awaiting shipment for, from a big retailer, like eBay, DHL or any other form of online service.

And in some cases, the infection can even be triggered as a result of simply downloading the malicious file, so experts strongly advise to check the sender e-mail address and to refrain from downloading malicious attachments on your computer, since it is also a risky move. If you believe the e-mail sent to you contains a malicious attachment, a good idea would be to forward the e-mail to an online service which will check it for viruses without you even downloading it. One such service is ZipeZip and it’s absolutely free.

In addition to this, Crypren ransomware may also be spread on victims computers via other menas as well, for instance if the virus file comes as a fake program of some sort, like:

  • Setups of software or games.
  • Cracks.
  • Patches.
  • Key generator programs.
  • Other executable type of files.

Crypren .ENCRYPTED Ransomware – More Information

Crypren is the type of ransomware infection, which emerged back in March, 2016 and now the threat has been reported to return in a new variant. The new variant of Crypren does not differ much from the older one and still aims to encrypt the files on your PC and hold them hostage, until you pay a hefty ransom. The virus makes sure to instruct you of the situation and also ensures that it’s presence is known via it’s ransom note file. It is called READ_THIS_TO_DECRYPT.html and looks like the following:

Text from image:


Your data (photos, documents, databases, etc.) have been encrypted with a private and unique key generated for this computer. This means that you will not be able to access your files anymore until they are decrypted. The private key is stored in our servers and the only way to receive your key to decrypt your files is making a payment.
The payment has to be done in Bitcoin to a unique address that we generated for you. Bitcoins are the virtual currency to make online payments. If you don’t know how to get Bitcoins, you can click the button “How to buy Bitcoins” below and follow the instructions. If you have problem with this task use internet.
You have only 1 week to submit the payment. When this time ends, the unique key will be destroyed and you won’t be able to recover your files anymore.
To recover your files, you must send 0,1 Bitcoins ( ~$37 ) to the next Bitcoin address…

The virus demands you to pay the sum of 37 dollars and it’s primary purpose is to scare you into paying by giving you a deadline of one week time to pay the ransom. The virus threatens to erase your encrypted files otherwise.

In addition to this, the newer version of Crypren Ransomware may come together with some extra “features”. The virus may delete the shadow volume copies on you PC and eliminate any chances of you recovering your files by using Windows recovery methods. This is done by executing a script as an administrator on the computers of victims. The script contains the following commands which are silently input in Windows Command Prompt:

→ process call create “cmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures”

After this, the ransomware may initiate it’s file encryption operations.

Crypren .ENCRYPTED Ransomware – Encryption Process

In order to encrypt the files on your computer system, the Crypren ransomware may also begin to perform multiple different types of operations on the victim’s computer, starting with possibly checking if the virus is running in the virtual environment or not. If so, the Crypren ransomware may self-delete and will not encrypt any files whatsoever. But if the virus is running on an actual OS, it may begin to encrypt the files that may contain the following file extensions:

→ .html, .jpg, .jpg2, .mdb, .mp3, .mp4, .mp4infovid, .mp4v, .pdf, .php, .php3, .png, .ppt, .pptm, .pptx, .accdb, .accde, .accdr, .accdt, .bmp, .cpp, .cs, .css, .csv, .csy, .doc, .docm, .docx, .docxml, .docz, .gif, .gzip, .py, .rar, .rar5, .rb, .rtf, .sql, .sqlite, .sqlite3, .sqlitedb, .swf, .swfhtml, .tar, .targz, .targz2, .tarlzma, .tarxz, .txt, .xlmv, .xls, .xlsm, .xlsx, .xml, .zip, .zipx

If those files are detected on your, computer, the Crypren ransomware may use the AES-256 encryption mode to encrypt those files, after which the malware may begin to apply a second encryption algorithm, known as RSA-2048 to encrypt the decryption key and make decryption even more impossible than before. After doing so, this malware sets the .ENCRYPTED file extension to the files and they may start to appear like the following:

Remove Crypren Ransomware and Restore .ENCRYPTED Files

In order to make sure that the malicious files and objects, belonging to Crypren ransomware are fully gone from your computer, security researchers recommend to follow the removal instructions underneath this article. They are divided in manual and automatic removal instructions whose primary purpose is to help you based on how much experience you have with malware removal. In addition to this, security researchers strongly advise users to download and install and advanced anti-malware software as the most effective way to remove Crypren Ransomware from your PC.

If you want to restore files, encrypted by this malware on your computer, there are other methods to do that, besides paying a hefty ransom. We have outlined several of those alternative methods in step “2. Restore files, encrypted by Crypren Ransomware” underneath. They may not be 100% effective, but may help you to restore as many files as possible.


Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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  1. AvatarJoni

    Hello, i want to ask how to remove extension file .pumax?

  2. AvatarVenom Spectre

    Hello, i want to ask how to remove extension file .tcgmif?
    Created by gandcrab v5.0.4


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