Mool Virus Removal Guide (+Decrypt .mool files)

Mool Virus – Details

Mool is a malicious software working as typical ransomware. Michael Gillespie, the popular virus researcher, first discovered this new name in the DJVU ransomware family.

Mool was developed for the sole function to encrypt all popular file types. Rationally, as quickly as the file encryption is effectively accomplished, the users are not able to get access to them. Mool ransomware adds its own “.mool” to all the encrypted files. For example, the file “price_list.xls”, when crypted by Mool, will be titled as “price_list.xls.mool”. When the file encryption is achieved, Mool puts its own distinct text file (_readme.txt) into all the folders that save the encrypted files.

The alert mentioned by text file requesting for the random os extremely similar to the notifications offered by other ransomware threats belonging to the DJVU family. The caution basically shows that the data has been encrypted and the only option to get access to it is to use an unique standalone key. Regretfully, this statement is absolutely real.

The technique to encrypt the files utilized by Mool is not totally researched. Nevertheless, there is no doubt that each computer system owner might be released an unique decryption key, which is absolutely special. It is extremely tough to recuperate the data without the appropriate key in place.

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

message from Mool virus

One more peculiarity of the Mool ransomware is that the users are unable to get access to the key. The decrypting key is hosted on an unique server under the total control by the crooks who have actually launched the Mool virus into the internet. In order to acquire the key and bring back the important data, the users are informed to contact the frauds by means of e-mail or by telegram and to pay the ransom in the amount of $980.

The message also states that individuals ought to contact the Mool authors within 72 hours upon the moment of the data file encryption. The alert suggests that by doing so individuals will get a 50% discount, for that reason, the ransom amount falls to $490.

No matter what the amount of the ransom is, we highly advise that you do not pay the ransom. There is no guarantee that these online scoundrels will keep their promises, so they may not care at all what the victims feel about the file encryption, even when the quantity of the ransom is received into their accounts. Thus, paying ransom often does not result in an effective recovery. So, the users might just lose their money for absolutely nothing.

Likewise, we urge you not to get in touch with the frauds as they advise. Do not move cash into their wallets. There are no applications that might break the Mool virus or restore the data at no charge. For that reason, the only right decision is to restore the data from possible backups (if readily available).

Virus Summary

NameMool Ransomware
File Extensionmool
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 .mool extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsOoss, Mmnn, Rooe
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Internet is now loaded with infections comparable to the Mool virus. For instance, this specific hazard is basically identical to Brusaf and other ransomware-type infections. These harmful utilities have actually been established in order to secure the crucial information and reveal the need for the users to pay the ransom. All these infections use the similar algorithm to create the specific key for successful data decryption.

Unless the Mool ransomware is still under the development procedure or has got some hidden bugs, it is not possible to restore the information manually. Hence, the only working solution to prevent the loss of your essential information is to routinely keep up-to-date backups of all your crucial documents.

Another essential piece of advice is to save the backups on unique storage not linked to your main computer. For example, you may 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 routine drive is very dangerous, since the backup might also be secured by the Mool virus.

Leakages for the Mool ransomware attack.

Mool uses numerous paths to infiltrate the susceptible computers. It is not certain what particular approach was utilized in your case, however, the intrusion may occur through the following channels:

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

There are times when the Mool may camouflage itself as some genuine application, for example, through the misleading signals demanding setup of some software update. This is the most common trick utilized by the scams to inject the Mool infection files into the system. By doing this users partly take part in its setup, without plainly comprehending the danger.

Moreover, the frauds may send unsolicited spam e-mail with tricky alerts motivating individuals to open dubious accessories or click some download links, for instance, those encouraging individuals to open certain images, text files, tax documents and other info.

No doubt, opening these files or clicking on the harmful links might essentially harm the system. Fake Media Player update alerts may result in the Mool ransomware seepage. Similarly, downloading the broken software may additionally consist of the ransomware installer. The last however not the least, installation of Mool may happen through some Trojan horses that may be installed stealthily into the system and without the user’s direct consent or perhaps permission.

Avoiding the Mool virus injection.

Obviously, there is no outright assurance that your computer will be constantly devoid of any malware attacks, however, we wish to share some helpful suggestions with you to make it more secure. Ensure to pay really 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 certain freeware installer may likewise consist of some other extra apps in the package. These additional applications may be extremely harmful. It is of utmost significance to keep your anti-virus software and your operating system in general to be always properly upgraded.

It is quite sensible that downloading cracked apps is prohibited, however, in addition, such unauthorized programs use may likewise bring major damage to your PC. For this reason, do not download any split programs. Plus, the fact that your present anti-virus did not protect the system from the Mool ransomware is an excellent reason for you to reconsider your options and change to another program that can render the safeguarding functions on a much better level.

Below please find the quotation from the Mool 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 “.mool” extension added by the ransomware:”

Mool Ransomware - encrypt files with .mool extension

Use GridinSoft Anti-Malware to remove Mool 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

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About 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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