EPUB Ransomware. How to decrypt .epub files?

If you cannot open your pics, documents, or files and see the .epub extension on them, your computer is definitely infected with Epub ransomware. It belongs to STOP/Djvu ransomware group

Epub ransomware encrypts personal documents identified on the victim’s PC with the extension “.epub” and after that leaves the ransom note in each folder which contains encrypted files. The instructions are placed on the victim’s PC in the “readme.txt” file. Its task is primarily comparable to other representatives of the same ransomware family: Eeyu, Enus, Eemv.

What is Epub Ransomware?

NameEpub Virus
Ransomware family1DJVU/STOP2 ransomware
Extension.epub
Ransomware note_readme.txt
RansomFrom $490 to $980
Contactmanager@mailtemp.ch, helprestoremanager@airmail.cc
SymptomsThe images, videos, and other documents have the “.epub” extension and cannot be opened by any programs
Fix Tool Trojan Killer – ransomware infections tool. 14-day free trial.

Epub is file-encrypting ransomware that prevents normal access to your text files, Excel tables, videos and pics by ciphering them. It marks the ciphered files with the “.epub” extension. Then Epub ransomware adds a money ransom note (readme.txt) to each folder. In this note, you can see the guidance to pay the ransom ($490-$980 in Bitcoin) to a certain BTC wallet. The AES-256 or RSA-1028 cipher it uses to cipher the files is not decryptable with modern computers. Even quantum PCs that currently exist will spend hundreds of years to find the decryption key.

How dangerous is the Epub ransomware?

When Epub ransomware gets on your computer, it will check your computer for images, videos, and important documents. It [ciphers all widespread file formats- .psd, .doc, .docx, .xls, .xlsx, .pdf, .jpeg, .png, et cetera. When these files are located, the ransomware will encrypt them and also change their extension to “.epub” to make sure that you understand what happened.

After the Epub ransomware encrypted the files on your PC, it will generate the last “readme.txt” file on the main screen. Besides the money transferring instructions, the victims also see the email addresses to contact the fraudsters – helprestoremanager@airmail.cc and manager@mailtemp.ch.

Here is the money ransom note that the Epub ransomware shows to its victims:

ATTENTION!

Don't worry, you can return all your files!
All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
https://we.tl/t-fhnNOAYC8Z
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.

To get this software you need write on our e-mail:
manager@mailtemp.ch

Reserve e-mail address to contact us:
helprestoremanager@airmail.cc

How did the Epub ransomware get on my computer?

The Epub ransomware spreads by posting websites to get hacked programs or games. They try to keep their eye on all hype subjects which can be chosen to spread ransomware. New games introductions, new popular films – Epub creators make everything to get their money on that. Some of the most popular methods these burglars utilize is one-day sites with torrent downloading links. Nonetheless, pursuing the contemporary trends is not the only way these criminals use. Methods that have already become standard, such as e-mail spamming, are likewise normal for STOP/Djvu ransomware spreading.

Malicious email spam
The example of email spamming that may lead to Epub ransomware injection

Avoiding this ransomware does not need a lot of initiative. Adhering to the ordinary principles of computer hygiene will considerably reduce all risks. Keep in mind that launching all files you get on email is not a good option. Even worse situation is to enable macros in Microsoft Office files. But it is better to prevent the malware intrusion at the moment when you have only opened the e-mail message. Inspecting the sender’s address can point out a lot about what you can anticipate, and when you see things like “support@amazon.com”– it is likely a legitimate e-mail. On the other hand, stuff that tries to appear like Amazon or FedEx shipping notice, however, uses the email address of “amazonspurrot1363@gmail.com”– need to make you be on the alarm. Above, you can see the example of such a message.

Outlaw sources of different digital things require some additional description. Going against copyright policy surely exposes you to the danger of being fined. However, using torrent trackers or third-party sites to download “free” programs likewise exposes you to a wide range of malware. No one can oversee anonymous people who start the torrent seeding or publish the hacked program version on the website with pirated software.

Epub virus removal instructions.

Download Trojan Killer Portable

Trojan Killer Portable Download

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This guide below shows how to use Trojan Killer Portable3 for Epub virus detection and removal:

  • STEP 1. Download and install Trojan Killer.

  • STEP 2. Click on "Finish".

  • STEP 3. Wait until necessary updates are downloaded and installed.

  • STEP 4. Select computer scan type.

  • STEP 5. The software will begin scanning your computer.

  • STEP 6. Click on "Cure PC".

Restore the files encrypted by the Epub ransomware

In most cases, it’s impossible to recover the files encrypted by the Epub ransomware because the private key needed to unlock the encrypted files is only available through cybercriminals. However, we’ve listed one option you can use to recover your files below.

Warning! Make sure you remove the ransomware from your system first, otherwise, it will repeatedly encrypt your files.

If your files were encrypted with an offline key, there is a chance you can recover them by using Emsisoft Decryptor for the STOP/Djvu decryption tool. Follow the below guide to recover your files using the Emsisoft Decryptor for STOP/Djvu.

  1. You can download Emsisoft Decryptor for STOP Djvu by clicking this link.
  2. When the decryptor has finished downloading, double-click on “decrypt_STOPDjvu.exe” to run this program on your computer.
  3. Click the “Decrypt” button to start the decryption process for Epub files. The screen will switch to a status view, informing you about your files’ current process and decryption status.
  4. The decryptor will inform you once the decryption process will be finished. If you require the report for your records, you can save it by clicking the “Save log” button.

If the Emsisoft Decryptor can’t decrypt your .epub files and you do not plan on paying the ransom, it is advised that you make an image of the encrypted drives so that you can decrypt them in the future.

Your computer should now be free of the Epub ransomware infection. However, suppose your current antivirus allowed this malicious program on your computer. In that case, you might want to consider purchasing the full-featured version of Trojan Killer to protect against these types of threats in the future.

EPUB Ransomware — How To Remove Virus & Decrypt Files?

Name: EPUB Virus

Description: EPUB Virus is a STOP/DJVU family of ransomware-type virus. It encrypts files, video, photos, documents. Encrypted files can be tracked by a specific epub extension. EPUB ransomware asks victims for a ransom fee about $490 - $980 in Bitcoin.

Offer price: 480

Currency: $

Operating System: Windows

Application Category: Virus

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  1. My files are encrypted by ransomware, what should I do now?
  2. About DJVU (STOP) Ransomware: https://gridinsoft.com/ransomware/djvu
  3. More about Trojan Killer: https://gridinsoft.com/trojankiller

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About William Reddy

I am from Ireland. My parents bought me a computer when I was 11, and several months after I have got a virus on this PC. I decided to enter the INSA Centre Val de Loire university after being graduated from the school. This French educational institution was offering a brand-new cybersecurity course. After getting the master's degree in cybersecurity, I've started working as a virus analyst in a little anti-malware vendor.