Btos Virus Removal Guide (+Decrypt .btos files)

Btos Virus Ransomware

Btos is a malicious software application functioning as common ransomware. Michael Gillespie, the widely known virus researcher, very first discovered this new name in the DJVU ransomware family.

Btos was created for the sole function to encrypt all popular file types. Realistically, as quickly as the file encryption is successfully achieved, the users are unable to get access to them. Btos ransomware includes its own “.btos” to all the encrypted data. For example, the file “price_list.xls”, once crypted by Btos, will be titled as “price_list.xls.btos”. When the file encryption is achieved, Btos puts its own unique text document (_readme.txt) into all the folders that keep the encrypted files.

The alert mentioned by text file asking for the random os very similar to the notices given by other ransomware hazards belonging to 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 distinct standalone key. Regretfully, this statement is absolutely real.

The method to encrypt the files utilized by Btos is not completely investigated. However, there is no doubt that each computer owner may be released an unique decryption key, which is definitely unique. It is incredibly difficult to recuperate the data without the proper 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 Btos infection is that the users are unable to get access to the key. The decrypting key is hosted on an unique server under the complete control by the criminals who have actually introduced the Btos ransomware into the web. In order to get the key and restore the essential 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 quantity of $980.

The message likewise says that the people should call the Btos authors within 72 hours upon the minute of the data file encryption. The alert suggests that by doing so the people will acquire a 50% discount rate, for that reason, the ransom quantity drops down to $490.

No matter what the amount of the ransom is, we highly encourage that you do not pay the ransom. There is no guarantee that these online crooks 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 often does not lead to a successful healing. So, the users might just lose their money for absolutely nothing.

Likewise, we advise you not to get in touch with the frauds as they instruct. Do not move money into their wallets. There are no applications that might split the Btos virus or bring back the information for free. For that reason, the only proper choice is to restore the data from possible backups (if offered).

Virus Summary

NameBtos Ransomware
File Extensionbtos
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 .btos extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsReha, Topi, Nosu
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Web is now loaded with infections similar to the Btos ransomware. For example, this particular hazard is generally identical to Brusaf and other ransomware-type infections. These destructive utilities have been developed in order to encrypt the crucial information and reveal the demand for the users to pay the ransom. All these infections utilize the identical algorithm to generate the particular key for successful data decryption.

Unless the Btos ransomware is still under the advancement process or has got some concealed bugs, it is not possible to restore the data by hand. Thus, the only working option to prevent the loss of your essential information is to routinely keep up-to-date backups of all your crucial data.

Another essential piece of suggestions is to store the backups on unique storage not connected to your main computer. For instance, you may keep it on the USB Flash Drive, or some external drive, or by using the cloud data storage services. Keeping the backups on your system drive is extremely risky, because the backup might likewise be secured by the Btos ransomware.

Leakages for the Btos ransomware attack.

Btos uses many courses to infiltrate the vulnerable computer systems. It is not particular what particular technique was utilized in your case, nevertheless, the invasion might happen via the following channels:

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

There are times when the Btos virus may camouflage itself as some real application, for instance, through the deceptive alerts demanding installation of some software application upgrade. This is the most typical trick utilized by the scams to inject the Btos virus files into the system. This way users partially participate in its installation, without clearly understanding the danger.

Additionally, the frauds may send out unsolicited spam e-mail with difficult informs motivating the people to open dubious accessories or click some download links, for example, those encouraging individuals to open specific photos, text files, tax documents and other info.

No doubt, opening these files or clicking on the malicious links might essentially harm the system. Fake Acrobat Reader update alerts may lead to the Btos ransomware infiltration. Likewise, downloading the broken software application might in addition consist of the ransomware installer. The last but not the least, setup of Btos might take place through some Trojan horses that might be set up stealthily into the system and without the user’s direct approval and even consent.

Preventing the Btos injection.

Naturally, there is no outright guarantee that your computer will be always free of any malware attacks, however, we want to share some useful ideas with you to make it much safer. Ensure to pay very close attention while searching the web and specifically while getting cost-free programs. Do not open any suspicious e-mail accessories, specifically if the sender is not known to you.

Do not forget that certain freeware installer might also consist of some other extra apps in the bundle. These extra applications may be very destructive. It is of utmost significance to keep your anti-virus software application and your os in basic to be constantly properly updated.

It is quite sensible that downloading cracked software is unlawful, however, in addition, such unapproved software application use may also bring major damage to your computer. Thus, do not download any broken programs. Plus, the truth that your present anti-virus did not safeguard the system from the Btos ransomware is a good factor for you to reconsider 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 Btos 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 “.btos” extension added by the ransomware:”

Btos Ransomware - encrypt files with .btos extension

Use GridinSoft Anti-Malware to remove Btos 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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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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  1. I can’t open the antivirus. It seems i don’t have administrator access. Please help

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