Tasa Virus Removal Guide (+Decrypt .tasa files)

Tasa Virus Ransomware

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

Tasa was developed for the sole function to encrypt all popular file types. Realistically, as soon as the encryption is effectively achieved, the users are not able to get access to them. Tasa virus includes its own “.tasa” to all the encrypted data. For instance, the file “price_list.xls”, as soon as crypted by Tasa, will be entitled as “price_list.xls.tasa”. Once the file encryption is achieved, Tasa puts its own unique text document (_readme.txt) into all the folders that save the encrypted files.

The alert mentioned by document asking for the random os really similar to the alerts offered by other ransomware risks belonging to the DJVU family. The caution basically shows that the files have been secured and the only option to get access to it is to use an unique standalone key. Regretfully, this statement is definitely true.

The technique to encrypt the files used by Tasa is not totally investigated. However, there is no doubt that each computer system owner might be issued a special decryption key, which is absolutely distinct. It is extremely difficult to recuperate the data without the proper key in location.

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

One more peculiarity of the Tasa infection is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the complete control by the criminals who have introduced the Tasa virus into the world wide web. In order to get the key and restore the crucial information, the users are told to contact the frauds by means of e-mail or by telegram and to pay the ransom in the quantity of $980.

The message also says that the people ought to call the Tasa authors within 72 hours upon the minute of the data encryption. The alert suggests that by doing so the people will acquire a 50% discount rate, for that reason, the ransom amount falls to $490.

No matter what the quantity of the ransom is, we strongly advise that you do not pay the ransom. There is no warranty that these online criminals will keep their guarantees, 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. For this reason, paying ransom often does not lead to an effective recovery. So, the users might simply lose their money for nothing.

Likewise, we advise you not to get in touch with the frauds as they instruct. Do not transfer loan into their wallets. There are no applications that could break the Tasa virus or restore the data at no cost. Therefore, the only right choice is to bring back the data from possible backups (if available).

Virus Summary

Name Tasa Ransomware
File Extension tasa
Type Ransomware
Family DJVU
Short Description The 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.
Symptoms File 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 .tasa extension to all the files modified by it.
Distribution Method Adware bundles and software cracks
Similar Infections Lokas, Besub, Nusar
Tasa Removal Tool   GridinSoft Anti-Malware
Tasa Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Internet is now loaded with infections similar to the Tasa virus. For example, this specific hazard is basically identical to Brusaf and other ransomware-type infections. These destructive utilities have actually been established in order to secure the essential information and express the demand for the users to pay the ransom. All these infections use the similar algorithm to produce the specific key for successful files decryption.

Unless the Tasa ransomware is still under the advancement process or has got some hidden bugs, it is not possible to restore the data manually. Therefore, the only working solution to prevent the loss of your important information is to routinely maintain updated backups of all your essential documents.

Another important piece of guidance is to keep the backups on special storage not linked to your primary PC. For instance, you might save it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your regular drive is very risky, since the backup may also be encrypted by the Tasa virus.

Leakages for the Tasa ransomware attack.

Tasa uses lots of paths to penetrate the vulnerable computer systems. It is not specific what particular approach was utilized in your case, however, the intrusion might occur by means of the following channels:

  • bundling with third-party programs, mainly free apps;
  • spam e-mails from the unidentified senders;
  • sites offering complimentary hosting;
  • P2P (peer-to-peer) torrent software.

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

Additionally, the scams might send out unsolicited spam e-mail with tricky signals encouraging individuals to open suspicious attachments or click some download links, for example, those encouraging the people to open particular pictures, text files, tax files and other information.

No doubt, opening these files or clicking on the destructive links might basically harm the system. Fake Acrobat Reader update alerts may result in the Tasa ransomware infiltration. Similarly, downloading the cracked software might additionally consist of the ransomware installer. The last but not the least, setup of Tasa might happen through some Trojan horses that might be installed stealthily into the system and without the user’s direct authorization and even permission.

Avoiding the Tasa ransomware attack.

Obviously, there is no absolute assurance that your computer system will be constantly devoid of any malware attacks, however, we wish to share some useful suggestions with you to make it more secure. Make certain to pay extremely close attention while searching the web and particularly while getting cost-free programs. Do not open any suspicious email attachments, especially if the sender is not known to you.

Do not forget that particular freeware installer may also consist of some other additional apps in the package. These extra applications may be extremely damaging. It is of utmost value to keep your anti-virus software application and your os in general to be always properly upgraded.

It is quite rational that downloading pirated programs is prohibited, however, furthermore, such unauthorized programs use may likewise bring severe damage to your computer. For this reason, do not download any cracked programs. Plus, the fact that your current anti-virus did not safeguard the system from the Tasa ransomware is an excellent reason for you to reevaluate your choices and change to another program that can render the securing functions on a far better level.

Below please find the quotation from the Tasa text file:

ATTENTION!

 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:
 https://we.tl/t-2P5WrE5b9f
 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:
 restorealldata@firemail.cc

 Reserve e-mail address to contact us:
 gorentos@bitmessage.ch

 Our Telegram account:
 @datarestore

Screenshot of files with “.tasa” extension added by the virus:”

Use GridinSoft Anti-Malware to remove Tasa 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.

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.

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

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

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.

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.

Use Emsisoft Decryptor for restore tasa 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.
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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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