Remove Bossi_tosi Virus (+Decrypt files)

Bossi_tosi – General Info

The Bossi_tosi mean a ransomware-type infection. Bossi_tosi was elaborated specifically to encrypt all major file types. As soon as the file is encrypted people are not able to use them. Bossi_tosi adds the “” extension for each file encrypted by it. For example, the file “myphoto.jpg“, when encrypted by Bossi_tosi, will be renamed into ““. As soon as the encryption is finished, Bossi_tosi places a special text file into every folder containing the encrypted data.

The message given by Bossi_tosi text file asking for the ransom is absolutely the same as the statements given by other ransomware virus representatives. It actually discusses that the information is encrypted which the only way to bring back it is to use a a special decryption key. Sadly, this is absolutely true. The kind of cryptography mechanism used by Bossi_tosi is still not properly examined. Still, it is definitely certain that each victim may be given the specific decryption key, which is completely unique. It is difficult to restore the files without the key available.

Another trick of Bossi_tosi is that the victims cannot get to the key. The key is saved on a particular server run by the frauds related to Bossi_tosi ransomware. To get the key and recover the important info people need to pay the ransom.

However, regardless of the requested quantity, people need to stay away from paying the virus. Cyber frauds are unfair, so they tend to completely disregard what their victims feel about the problem, even when the payment reaches their pockets. This is why paying the ransom usually does not provide any positive result and people just lose their money for nothing.

We highly advise that you do not contact these crooks and definitely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack Bossi_tosi ransomware and to recover the information data free of charge. Therefore, the just best decision is to recover the lost information from the available backup.

Virus Summary

NameBossi_tosi Ransomware
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 and RSA encryption algorithms. Once the encryption is completed, the ransomware adds its special extension to all the files modified by it.
Distribution MethodSpam Emails, Email Attachments
Removal Tool   GridinSoft Anti-Malware

Keep in mind that the internet is now overwhelmed with threats that look similar to Bossi_tosi ransomware. Harmful programs of such kind are normally elaborated to encrypt essential data and to state the demand prior to the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a similar algorithm to generate the special decryption key for information decryption.

Hence, as long as the ransomware is still being developed or has some hidden bugs, manually recovering the information is merely not feasible. The only method to avoid the loss of your important information is to routinely create backups of your important information.

Remember that even if you create such backups, they must be put into a special storage utility not connect to your main computer. You may use the USB Memory Stick or external hard drive for this purpose, or refer to the help of the cloud storage. If you save your backup files on your common system they may be encrypted in addition to other files, so it’s definitely not a good storage place.

How did ransomware infect my PC?

There are several ways used by online scams to distribute Bossi_tosi ransom virus. Despite the fact that it is uncertain how exactly Bossi_tosi injects your system, there are some leaks through which it may infiltrate the system:

  • integration with third-party software, especially freeware;
  • spam e-mails from unidentified senders;
  • websites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Frequently Bossi_tosi ransomware might be presented as some genuine software application, for instance, in the pop-ups advising users to execute some important software updates. This is the common trick used by online scams to persuade people into downloading and installing Bossi_tosi infection manually, by means of their direct participation in the installation process.

Furthermore, the criminals might refer to different email spam strategies to inject harmful codes into Windows PC. So, they may refer to to sending unsolicited spam e-mails with tricky notifications promoting users to download the attachments or click on certain download links, for example, the ones motivating users to open some video, documents, tax reports or invoices.

Needless to mention, opening such files or clicking on such dangerous links may badly damage the PC. Fictitious Adobe Flash Player update alerts may result in Bossi_tosi virus injection. As for the cracked applications, these illegally downloaded programs may likewise consist of destructive codes resulting in Bossi_tosi secret installation. Lastly, injection of Bossi_tosi may happen by methods of Trojans that privately get injected into the system and set up destructive tools without the user’s consent.

Is there any method to avoid the injection of Bossi_tosi ransom virus?

Despite the fact that there is no 100% guarantee to prevent your computer from getting infected, there are some pieces of suggestions we want to show with you. First of all, be extremely cautious when you surf the web and specifically while downloading totally free programs. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Bear in mind that some freeware installers may contain other unwanted utilities in the bundle, so they may be harmful. Make sure that your current antivirus software and your entire operating system is always appropriately updated.

Of course, downloading pirated software is illegal and may lead to vital damage to be made for your PC. For this reason, stay away from downloading cracked software. You are also strongly recommended to reconsider your existing security software and perhaps change to another security solution that can render better services of protecting your computer.

Below please find the quotation from the Bossi_tosi text file:

your files have been encrypted! To return the files, message us at or

Please type us your ID: XXXXXXXXXX

You can send us any two encrypted files and we will decrypt them to prove our honesty.

Attention!!! Do not try to recover the files yourself, you will damage them and recovery with our key will become impossible.

Screenshot of files with “” extension added by the ransomware:
Bossi_tosi Ransomware - encrypt files with extension

Use GridinSoft Anti-Malware to remove Bossi_tosi 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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One comment

  1. Am I reading this correctly, that the Gridinsoft Anti-Malware tool will help protect me from being infected by this ransomware and having my files encrypted, but it won’t be able to decrypt any files that have already been encrypted on a machine that’s already been compromised?

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