Djvu VirusRansomwareRemoval Guide

Mpaj Virus Removal Guide (+Decrypt .mpaj files)

Mpaj – Ransomware

Mpaj is a destructive software application functioning as common ransomware. Michael Gillespie, the well-known virus researcher, very first found this new name in the DJVU ransomware family.

Mpaj was created for the sole function to encrypt all popular file types. Rationally, as soon as the encryption is effectively achieved, the users are unable to get access to them. Mpaj virus includes its own “.mpaj” to all the encrypted files. For instance, the file “price_list.xls”, once crypted by Mpaj, will be titled as “price_list.xls.mpaj”. Once the file encryption is accomplished, Mpaj puts its own unique text document (_readme.txt) into all the folders that save the encrypted files.

The message mentioned by text file asking for the random os very similar to the notices provided by other ransomware hazards belonging to the DJVU family. The warning generally indicates that the files have been encrypted and the only solution to get access to it is to use an unique standalone key. Regretfully, this declaration is absolutely real.

The technique to encrypt the files utilized by Mpaj is not totally investigated. However, there is no doubt that each computer owner may be issued a special decryption key, which is absolutely special. It is incredibly tough to recover the information without the suitable key in place.

“Don’t worry, you can return all your files!”, from _readme.txt message:

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

One more peculiarity of the Mpaj virus is that the users are not able to get access to the key. The decrypting key is hosted on an unique server under the total control by the criminals who have introduced the Mpaj infection into the internet. In order to acquire the key and restore the important information, the users are informed to get in touch with the frauds by means of email or by telegram and to pay the ransom in the quantity of $980.

The message likewise says that individuals ought to call the Mpaj authors within 72 hours upon the moment of the data encryption. The alert shows that by doing so the people will acquire a 50% discount rate, therefore, the ransom amount falls to $490.

No matter what the quantity of the ransom is, we highly recommend that you do not pay the ransom. There is no assurance that these online scoundrels will keep their promises, so they may not care at all what the victims feel about the encryption, even when the amount of the ransom is received into their accounts. Thus, paying ransom often does not result in a successful healing. So, the users might simply lose their money for nothing.

Likewise, we advise you not to call the frauds as they advise. Do not transfer cash into their wallets. There are no applications that could break the Mpaj ransomware or restore the information for free. For that reason, the only right decision is to restore the information from possible backups (if readily available).

Virus Summary

NameMpaj Ransomware
File Extensionmpaj
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 .mpaj extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsJope, Mado, Opqz
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Web is now loaded with infections similar to the Mpaj ransomware. For instance, this specific threat is essentially identical to Brusaf and other ransomware-type infections. These damaging utilities have been developed in order to encrypt the essential information and reveal the need for the users to pay the ransom. All these infections utilize the similar algorithm to produce the specific key for successful information decryption.

Unless the Mpaj ransomware is still under the advancement procedure or has got some hidden bugs, it is not possible to bring back the data manually. Therefore, the only working solution to avoid the loss of your crucial information is to routinely keep current backups of all your important data.

Another important piece of advice is to save the backups on unique storage not connected to your primary computer. For example, you might store 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 really dangerous, since the backup might also be secured by the Mpaj infection.

Leaks for the Mpaj ransomware attack.

Mpaj uses numerous courses to infiltrate the susceptible computer systems. It is not certain what particular technique was used in your case, however, the intrusion may happen through the following channels:

  • bundling with third-party programs, generally free apps;
  • spam emails from the unidentified senders;
  • sites offering free hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Mpaj ransomware might disguise itself as some real application, for example, through the deceptive signals requiring installation of some software update. This is the most common technique used by the frauds to inject the Mpaj infection files into the system. In this manner users partially participate in its installation, without clearly comprehending the danger.

Additionally, the scams might send unsolicited spam e-mail with difficult informs encouraging individuals to open suspicious accessories or click on some download links, for instance, those motivating individuals to open certain pictures, text files, tax documents and other info.

No doubt, opening these files or clicking on the malicious links may basically damage the system. Fake Media Player update notifications may cause the Mpaj ransomware infiltration. Likewise, downloading the broken software application may additionally contain the ransomware installer. The last however not the least, setup of Mpaj may take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct approval and even authorization.

Preventing the Mpaj virus injection.

Of course, there is no outright warranty that your computer will be always free of any malware attacks, however, we would like to share some beneficial ideas with you to make it much safer. Make certain to pay very very close attention while searching the web and specifically while getting cost-free programs. Do not open any suspicious e-mail accessories, particularly if the sender is not understood to you.

Do not forget that specific freeware installer might also contain some other additional apps in the package. These additional applications might be really damaging. It is of utmost importance to keep your anti-virus software application and your operating system in basic to be always properly upgraded.

It is quite sensible that downloading cracked software is unlawful, however, in addition, such unapproved software use may likewise bring major damage to your PC. Thus, do not download any broken programs. Plus, the reality that your current anti-virus did not safeguard the system from the Mpaj ransomware is an excellent reason for you to reevaluate your choices and change to another program that can render the protecting functions on a much better level.

Below please find the quotation from the Mpaj 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 “.mpaj” extension added by the virus:”

Mpaj Ransomware - encrypt files with .mpaj extension

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

1.Download GridinSoft Anti-Malware.

You can get 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

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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.

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