Btnw – General Info
Btnw is a destructive software functioning as common ransomware. Michael Gillespie, the well-known virus researcher, very first discovered this new name in the DJVU ransomware family.
Btnw was developed for the sole purpose to encrypt all popular file types. Rationally, as soon as the file encryption is effectively accomplished, the users are not able to get access to them. Btnw ransomware adds its own “.btnw” to all the encrypted data. For instance, the file “price_list.xls”, once modified by Btnw, will be entitled as “price_list.xls.btnw”. Once the encryption is accomplished, Btnw puts its own special text file (_readme.txt) into all the folders that save the encrypted files.
The alert mentioned by text file requesting the random os extremely comparable to the alerts given by other ransomware threats belonging to the DJVU family. The caution basically shows that the data has been secured and the only option to get access to it is to use a distinct standalone key. Regretfully, this declaration is absolutely true.
The approach to secure the files utilized by Btnw is not entirely looked into. Nevertheless, there is no doubt that each computer system owner may be released a special decryption key, which is definitely distinct. It is exceptionally tough to recover the information without the suitable key in location.
“Don’t worry, you can return all your files!”, from text file message:
One more peculiarity of the Btnw infection is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the complete control by the criminals who have actually released the Btnw infection into the world wide web. In order to obtain the key and restore the important data, the users are informed to contact the frauds through email or by telegram and to pay the ransom in the amount of $980.
The message likewise says that the people need to call the Btnw authors within 72 hours upon the minute of the information file encryption. The alert suggests that by doing so individuals will get a 50% discount rate, for that reason, the ransom amount falls to $490.
Btnw modified your information, however, it may not be the only risk on your computer. Plus, the ransomware may be concealed deep in the system. To identify and erase the threat totally, we advise you to refer to the aid of GridinSoft Anti-Malware tool.
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No matter what the amount of the ransom is, we highly recommend that you do not pay the ransom. There is no assurance that these online scoundrels will keep their guarantees, so they may not care at all what the victims feel about the file encryption, even when the amount of the ransom is gotten into their accounts. Thus, paying ransom typically does not result in an effective recovery. So, the users may just lose their money for nothing.
Similarly, we urge you not to contact the scams as they instruct. Do not move money into their wallets. There are no applications that might break the Btnw ransomware or restore the data at no charge. Therefore, the only proper decision is to bring back the data from possible backups (if available).
Virus Summary
| Name | Btnw Ransomware |
| File Extension | btnw |
| 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 .btnw extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Btnw Removal Tool | GridinSoft Anti-Malware |
| Btnw Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now filled with infections comparable to the Btnw ransomware. For example, this particular hazard is basically similar to Brusaf and other ransomware-type infections. These destructive energies have actually been developed in order to secure the important information and express the need for the users to pay the ransom. All these infections use the identical algorithm to create the specific key for effective files decryption.
Unless the Btnw ransomware is still under the development procedure or has actually got some hidden bugs, it is not possible to restore the data manually. Therefore, the only working option to prevent the loss of your important information is to routinely keep up-to-date backups of all your important data.
Another important piece of advice is to save the backups on special storage not linked to your primary computer. For example, you may save it on the USB Flash Drive, or some external disk drive, or by using the cloud data storage services. Keeping the backups on your routine drive is very risky, given that the backup might also be encrypted by the Btnw ransomware.
Leaks for the Btnw ransomware attack.
Btnw utilizes numerous courses to penetrate the susceptible computers. It is not specific what specific technique was used in your case, however, the intrusion might happen via the following channels:
- bundling with third-party programs, generally free apps;
- spam e-mails from the unknown senders;
- websites supplying complimentary hosting;
- P2P (peer-to-peer) torrent downloads.
There are times when the Btnw virus may disguise itself as some real application, for example, through the misleading informs requiring setup of some software application update. This is the most common trick utilized by the scams to inject the Btnw virus files into the system. This way users partly take part in its setup, without plainly comprehending the threat.
Additionally, the scams may send unsolicited spam email with tricky signals encouraging the people to open suspicious attachments or click on some download links, for instance, those motivating individuals to open specific pictures, text files, tax documents and other info.
No doubt, opening these files or clicking the destructive links might essentially damage the system. Fake Media Player upgrade alerts may lead to the Btnw ransomware seepage. Likewise, downloading the cracked software application might furthermore consist of the ransomware installer. The last however not the least, installation of Btnw may occur through some Trojan horses that might be installed stealthily into the system and without the user’s direct consent or even permission.
Preventing the Btnw attack.
Of course, there is no absolute guarantee that your computer system will be constantly without any malware attacks, nevertheless, we wish to share some beneficial suggestions with you to make it safer. Make certain to pay very attention while browsing the web and especially while getting cost-free programs. Do not open any dubious email accessories, specifically if the sender is not understood to you.
Do not forget that specific freeware installer may also contain some other extra apps in the bundle. These additional applications might be really damaging. It is of utmost significance to keep your anti-virus software application and your operating system in general to be always properly upgraded.
It is rather logical that downloading cracked software is unlawful, nevertheless, furthermore, such unapproved software use may likewise bring serious damage to your PC. Thus, do not download any broken programs. Plus, the truth that your current anti-virus did not secure the system from the Btnw ransomware is an excellent factor for you to reassess your options and change to another program that can render the protecting functions on a far better level.
Below please find the quotation from the Btnw 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 “.btnw” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Btnw ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can get GridinSoft Anti-Malware by clicking the button below:
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 btnw files
You can download Emsisoft Decryptor by clicking the button below:
- Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
- Once the license terms are accepted, the primary decryptor user interface opens.
- 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.
- 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.
- 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
- 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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