Djvu VirusRansomwareRemoval Guide

Matu Virus Removal Guide (+Decrypt .matu files)

Matu – Ransomware

Matu is a malicious software working as typical ransomware. Michael Gillespie, the popular malware researcher, very first found this new name in the DJVU ransomware family.

Matu was developed for the sole purpose to encrypt all popular file types. Realistically, as quickly as the file encryption is effectively accomplished, the users are unable to get access to them. Matu ransomware adds its own “.matu” to all the encrypted files. For instance, the file “price_list.xls”, when modified by Matu, will be entitled as “price_list.xls.matu”. As soon as the file encryption is accomplished, Matu puts its own unique text document (_readme.txt) into all the folders that save the encrypted files.

The message specified by _readme.txt asking for the random os very similar to the notices offered by other ransomware hazards coming from the DJVU family. The caution basically indicates that the data has been secured and the only solution to get access to it is to use an unique standalone key. Regretfully, this statement is absolutely real.

The method to encrypt the files utilized by Matu is not completely looked into. Nevertheless, there is no doubt that each computer owner may be released an unique decryption key, which is definitely special. It is very hard to recover the data without the appropriate key in location.

“Don’t worry, you can return all your files!”, from text file message:

Don't worry, you can return all your files! virus

One more peculiarity of the Matu ransomware is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the total control by the criminals who have launched the Matu virus into the web. In order to get the key and restore the crucial data, the users are informed to get in touch with the scams via e-mail or by telegram and to pay the ransom in the amount of $980.

The message likewise states that the people should call the Matu authors within 72 hours upon the minute of the information encryption. The alert suggests that by doing so individuals will get a 50% discount rate, therefore, the ransom amount falls to $490.

No matter what the amount of the ransom is, we highly recommend that you do not pay the ransom. There is no guarantee that these online criminals will keep their promises, so they might not care at all what the victims feel about the file encryption, even when the quantity of the ransom is gotten into their accounts. For this reason, paying ransom typically does not lead to an effective recovery. So, the users may simply lose their money for absolutely nothing.

Likewise, we prompt you not to get in touch with the scams as they instruct. Do not transfer cash into their wallets. There are no applications that could break the Matu virus or restore the data at no charge. For that reason, the only proper decision is to restore the information from possible backups (if offered).

Virus Summary

NameMatu Ransomware
File Extensionmatu
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .matu extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Matu Removal Tool   GridinSoft Anti-Malware
Matu Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Web is now full of infections comparable to the Matu virus. For example, this particular hazard is generally similar to Brusaf and other ransomware-type infections. These harmful utilities have actually been developed in order to encrypt the important information and express the need for the users to pay the ransom. All these infections utilize the identical algorithm to generate the specific key for successful files decryption.

Unless the Matu ransomware is still under the advancement process or has got some hidden bugs, it is not possible to restore the information by hand. Hence, the only working option to prevent the loss of your crucial data is to frequently maintain current backups of all your important documents.

Another important piece of advice is to store the backups on unique storage not linked to your main PC. For example, you might save it on the USB Flash Drive, or some external hard disk, or by using the cloud data storage services. Keeping the backups on your regular drive is very risky, because the backup might also be secured by the Matu .

Leakages for the Matu ransomware attack.

Matu uses numerous paths to infiltrate the vulnerable computer systems. It is not specific what particular technique was used in your case, however, the intrusion may happen through the following channels:

  • bundling with third-party programs, generally freeware;
  • spam e-mails from the unidentified senders;
  • websites providing free hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Matu ransomware may camouflage itself as some genuine application, for example, through the misleading informs demanding installation of some software application upgrade. This is the most typical trick used by the scams to inject the Matu virus files into the system. By doing this users partly take part in its setup, without clearly comprehending the danger.

Furthermore, the scams may send unsolicited spam email with tricky notifies motivating the people to open suspicious accessories or click on some download links, for instance, those motivating the people to open particular photos, text files, tax files and other info.

No doubt, opening these files or clicking the harmful links might essentially damage the system. Fake Media Player update notifications may cause the Matu ransomware seepage. Similarly, downloading the broken software might in addition contain the ransomware installer. The last but not the least, setup of Matu might occur through some Trojan horses that may be installed stealthily into the system and without the user’s direct authorization or even permission.

Preventing the Matu ransom virus injection.

Of course, there is no outright guarantee that your computer system will be constantly devoid of any malware attacks, however, we want to share some beneficial tips with you to make it safer. Make sure to pay really very close attention while browsing the web and especially while downloading cost-free programs. Do not open any suspicious email accessories, especially if the sender is not understood to you.

Do not forget that particular freeware installer may likewise contain some other additional apps in the bundle. These additional applications may be very damaging. It is of utmost value to keep your anti-virus software and your os in general to be constantly properly upgraded.

It is quite sensible that downloading cracked software is unlawful, however, in addition, such unauthorized programs usage may also bring severe damage to your system. Thus, do not download any broken programs. Plus, the reality that your current anti-virus did not secure the system from the Matu ransomware is a great reason for you to reevaluate your options and change to another program that can render the protecting functions on a much better level.

Below please find the quotation from the Matu text file:


 Don't worry, you can return all your files!
 All your files like photos, 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:
 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:

 Reserve e-mail address to contact us:

 Our Telegram account:

Screenshot of files with “.matu” extension added by the ransomware:”

Matu Ransomware - encrypt files with .matu extension

Use GridinSoft Anti-Malware to remove Matu ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore matu files

You can get Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
  4. Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
  5. After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
  6. The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *


This site uses Akismet to reduce spam. Learn how your comment data is processed.

Back to top button