Djvu VirusRansomwareRemoval Guide

Pola Virus Removal Guide (+Decrypt .pola files)

Pola Virus – Details

Pola is a harmful software functioning as typical ransomware. Michael Gillespie, the widely known malware researcher, first discovered this new name in the DJVU ransomware family.

Pola was developed for the sole purpose to encrypt all popular file types. Rationally, as quickly as the file encryption is successfully accomplished, the users are unable to get access to them. Pola ransomware includes its own “.pola” to all the encrypted data. For example, the file “price_list.xls”, as soon as modified by Pola, will be titled as “price_list.xls.pola”. Once the encryption is achieved, Pola puts its own special text document (_readme.txt) into all the folders that store the encrypted files.

The message specified by text file asking for the random os extremely similar to the alerts given by other ransomware dangers coming from the DJVU family. The warning generally indicates that the data has been secured and the only option to get access to it is to use a special standalone key. Regretfully, this declaration is absolutely true.

The technique to encrypt the files utilized by Pola is not entirely researched. However, there is no doubt that each computer owner may be released an unique decryption key, which is definitely distinct. It is very tough to recover the data without the appropriate key in place.

“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 Pola infection 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 scoundrels who have introduced the Pola virus into the web. In order to acquire the key and bring back the crucial information, the users are informed to get in touch with the scams by means of email or by telegram and to pay the ransom in the amount of $980.

The message likewise states that individuals should call the Pola authors within 72 hours upon the minute of the information file encryption. The alert indicates that by doing so the people 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 recommend that you do not pay the ransom. There is no warranty that these online scoundrels will keep their pledges, so they may not care at all what the victims feel about the encryption, even when the quantity of the ransom is received into their accounts. Hence, paying ransom typically does not result in a successful recovery. So, the users may just lose their money for nothing.

Similarly, we prompt you not to contact the frauds as they instruct. Do not transfer loan into their wallets. There are no applications that could crack the Pola virus or bring back the data at no cost. For that reason, the only appropriate choice is to restore the information from possible backups (if available).

Virus Summary

NamePola Ransomware
File Extensionpola
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 .pola extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsWbxd, Coos, Qlkm
Pola Removal Tool   GridinSoft Anti-Malware
Pola Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Internet is now full of infections similar to the Pola ransomware. For example, this specific danger is generally similar to Brusaf and other ransomware-type infections. These harmful utilities have actually been established in order to secure the crucial data and express the need for the users to pay the ransom. All these infections utilize the similar algorithm to create the particular key for effective information decryption.

Unless the Pola ransomware is still under the development process or has got some concealed bugs, it is not possible to bring back the data manually. Thus, the only working solution to prevent the loss of your crucial data is to frequently preserve current backups of all your important files.

Another essential piece of suggestions is to store the backups on special storage not connected to your primary computer. For instance, you might store it on the USB Flash Drive, or some external disk drive, or by using the cloud data storage services. Keeping the backups on your regular drive is really risky, since the backup may likewise be encrypted by the Pola infection.

Leaks for the Pola ransomware attack.

Pola uses lots of paths to penetrate the vulnerable computers. It is not specific what particular approach was used in your case, however, the intrusion may take place by means of the following channels:

  • bundling with third-party programs, mainly freeware;
  • spam e-mails from the unknown senders;
  • sites providing complimentary hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Pola may disguise itself as some real application, for example, through the deceptive signals demanding setup of some software application upgrade. This is the most common technique utilized by the scams to inject the Pola virus files into the system. This way users partially participate in its setup, without plainly comprehending the threat.

Furthermore, the frauds might send unsolicited spam e-mail with challenging notifies motivating the people to open suspicious accessories or click some download links, for example, those motivating individuals to open particular photos, text files, tax documents and other information.

No doubt, opening these files or clicking the harmful links might basically harm the system. Fake Acrobat Reader update alerts may lead to the Pola ransomware seepage. Similarly, downloading the broken software application might in addition consist of the ransomware installer. The last however not the least, setup of Pola may take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct permission or even approval.

Avoiding the Pola attack.

Naturally, there is no absolute guarantee that your computer system will be always free of any malware attacks, nevertheless, we would like to share some beneficial ideas with you to make it more secure. Make certain to pay extremely very close attention while browsing the web and especially while downloading cost-free programs. Do not open any dubious e-mail attachments, particularly if the sender is not known to you.

Do not forget that particular freeware installer may also contain some other additional apps in the package. These additional applications may be really destructive. It is of utmost significance to keep your anti-virus software application and your os in general to be constantly correctly upgraded.

It is quite rational that downloading cracked software is illegal, however, furthermore, such unapproved software usage may also bring major damage to your system. Hence, do not download any split programs. Plus, the reality that your current anti-virus did not protect the system from the Pola ransomware is a good reason for you to reassess your options and switch to another program that can render the protecting functions on a far better level.

Below please find the quotation from the Pola 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 “.pola” extension added by the virus:”

Pola Ransomware - encrypt files with .pola extension

Use GridinSoft Anti-Malware to remove Pola 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 pola files

You can download 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.
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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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