MZTU Virus (.mztu File) Ransomware — Remove & Decrypt Files

Written by William Reddy

If you can’t open your images, documents, or other files and also see the .mztu extension on them, your computer is surely infected with Mztu ransomware. It pertains to STOP/Djvu ransomware family

Mztu ransomware encrypts personal files located on the victim’s computer with the extension “.mztu” and then leaves the ransom note in each folder which contains encrypted files. The instructions are placed on the victim’s desktop in the “readme.txt” file. Its task is generally comparable to other samples of the same ransomware family: Mzop, Mzuu, Mzqw.

What is Mztu Ransomware?

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

Mztu is file-encrypting ransomware that prevents regular access to your text files, Excel tables, videos and photos by encrypting them. It marks the encrypted files with the “.mztu” extension. Then Mztu ransomware adds a 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 utilizes to cipher the files is not decryptable with contemporary computers. Even quantum PCs that already exist will spend hundreds of years to brute force the decryption key.

How dangerous is the Mztu ransomware?

When Mztu ransomware gets on your computer, it will scan your system for images, videos, and important documents. It [ciphers all widespread file formats- .psd, .doc, .docx, .xls, .xlsx, .pdf, .jpeg, .png, et cetera. When these documents are found, the ransomware will cipher them and change their extension to “.mztu” to ensure that you understand what happened.

After the Mztu ransomware encrypted the data 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 – datarestorehelp@airmail.cc and support@fishmail.top.

Here is the ransom note that the Mztu 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:
support@fishmail.top

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

How did the Mztu ransomware get on my computer?

The Mztu ransomware spreads by placing links to download hacked programs or games. They try to keep their eye on all buzz themes which can be used to spread ransomware. New games releases, new popular movies – Mztu developers make whatever to get their victims on that. Some of the most preferred tactics these criminals use is one-day sites with torrent downloading links. Nevertheless, using the modern-day news is not the only tactic these burglars use. Ways that have already turned into classic, such as email spamming, are likewise common for STOP/Djvu ransomware spreading.

Malicious email spam

The example of email spamming that may lead to Mztu ransomware injection

Preventing this ransomware does not require a lot of initiative. Following the standard principles of computer hygiene will noticeably minimize all hazards. Remember that starting all files you get on e-mail is not a good habit. Even worse situation is to enable macros in Microsoft Office files. However, it is better to avoid the malware intrusion at the moment when you have just opened the e-mail message. Checking the sender’s address can say a lot about what you can anticipate, and when you see the thing like “support@amazon.com”– it is likely a legit e-mail. At the same time, stuff that tries to look like Amazon or FedEx delivery notification, however, uses the e-mail address of “amazonspurrot1363@gmail.com”– need to make you get on the alarm. Above, you can see the example of such a message.

Illegal sources of different digital things require some extra explanation. Violating copyright law already throws you to the possibility of being fined. Nevertheless, using torrent trackers or third-party sites to download “free” programs also exposes you to various malware. No one can oversee unnamed individuals that start the torrent seeding or release the hacked program version on the website with pirated program.

Mztu 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 Mztu 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 Mztu ransomware

In most cases, it’s impossible to recover the files encrypted by the Mztu 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 Mztu 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 .mztu 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 Mztu 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.

Remove MZTU Ransomware Virus (DECRYPT .mztu FILES)

Name: MZTU Virus

Description: MZTU Virus is a STOP/DJVU family of ransomware-type virus. It encrypts files, video, photos, documents. Encrypted files can be tracked by a specific mztu extension. MZTU 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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  2. About DJVU (STOP) Ransomware: https://gridinsoft.com/ransomware/djvu
  3. More about Trojan Killer: https://gridinsoft.com/trojankiller

About the author

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.

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