Remove Btc Virus (+Decrypt .[].btc files) – Oled Ransomware

Btc Virus – Details

The Btc stands for a ransomware-type infection. The virus comes from the Oled ransomware family. Btc was elaborated specifically to encrypt all major file types. Once the file is encrypted people are not able to use them. Btc adds the “.[].btc” extension for each file encrypted by it. For example, the file “myphoto.jpg“, as soon as encrypted by Btc, will be renamed into “myphoto.jpg.[].btc“. As quickly as the encryption is completed, Btc places a special text file into every folder containing the encrypted data.

The message given by Btc text file requesting for the ransom is definitely the same as the statements given by other ransomware representatives belonging to the Oled family. It actually points out that the information is encrypted and that the only way to restore it is to use a a special decryption key. Unfortunately, this is definitely true. The sort of cryptography mechanism applied by Btc is still not correctly examined. Still, it is absolutely particular that each victim might be given the specific decryption key, which is totally unique. It is difficult to restore the files without the key available.

Another technique of Btc is that the victims cannot access to the key. The key is saved on a specific server run by the frauds connected with Btc ransomware. To get the key and recover the important info people need to pay the ransom.

Nonetheless, irrespective of the asked for quantity, people must stay away from paying the virus. Cyber frauds are not fair, so they tend to entirely disregard what their victims feel about the issue, even when the payment reaches their pockets. This is why paying the ransom normally does not provide any positive outcome and people simply lose their money for absolutely nothing.

We highly advise that you do not contact these crooks and absolutely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack Btc ransomware and to recover the data data totally free. Thus, the only best decision is to recover the lost information from the available backup.

Virus Summary

NameBtc Ransomware
File Extension.[].btc
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 [].btc extension to all the files modified by it.
Distribution MethodSpam Emails, Email Attachments
Similar InfectionsOled, Remove, Remove
Removal Tool   GridinSoft Anti-Malware

Bear in mind that the web is now overwhelmed with threats that look comparable to Btc ransomware. It is similar Oled and many other ransomware-type threats. Malicious programs of such kind are normally elaborated to encrypt essential data and to state the need prior to the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a similar algorithm to produce the distinct decryption key for data decryption.

Hence, as long as the ransomware is still being developed or has some hidden bugs, by hand recovering the information is just not feasible. The only way to prevent the loss of your important files is to regularly create backups of your important information.

Bear in mind that even if you create such backups, they must be placed into a special storage utility not connect to your main PC. You may use the 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 together with other files, so it’s absolutely not a good storage place.

How did ransomware infect my PC?

There are several ways used by online scams to distribute Btc ransomware. Even though it doubts how exactly Btc injects your computer, there are some leaks through which it may penetrate the system:

  • integration with third-party apps, especially freeware;
  • spam emails from unknown senders;
  • websites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Often Btc ransomware might exist as some legitimate software application, for instance, in the pop-ups advising users to implement some crucial software updates. This is the common technique used by online frauds to persuade people into downloading and installing Btc infection manually, by methods of their direct participation in the installation process.

In addition, the criminals may describe various email spam tactics to inject harmful codes into copmuter. So, they may refer to to sending unsolicited spam emails with tricky notices 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 significantly damage the system. Fictitious Adobe Flash Player update notifies may result in Btc ransom injection. As for the cracked software, these illegally downloaded programs may likewise consist of malicious codes leading to Btc secret installation. Finally, injection of Btc may happen by ways of Trojans that covertly get injected into the system and set up harmful utilities without the user’s consent.

Is there any method to avoid the injection of Btc ransomware?

Despite the fact that there is no 100% guarantee to avoid your computer from getting infected, there are some pieces of guidance we want to share with with you. To start with, be very cautious when you browse the web and especially while downloading totally free programs. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Remember that some freeware installers may include other unwanted utilities in the package, so they may be harmful. Ensure that your current antivirus software and your entire OS is always appropriately updated.

Naturally, downloading pirated software is illegal and may result in important damage to be produced your PC. Hence, stay away from downloading cracked software. You are likewise strongly encouraged to reconsider your existing security software and possibly change to another security solution that can render far better services of protecting your Windows.

Below please find the quotation from the Btc text file:


All your files, documents, photos, databases and other important files are encrypted.

You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key.
Only we can give you this key and only we can recover your files.

2. INSTALL TOR BROWSER AND OPEN THIS LINK url 1: hxxp://kcxb2moqaw76xrhv.onion/contact/kjnsdj7873  OR
url 2: hxxp://hc3zgfx4ai2wc6lu5jlmr2xdzeshd5ogis2mc7pnl42pz4x4pxbppqid.onion/contact/kjnsdj7873

- Notice: You are sending a message as guest. Once you send the message you will be able to send and receive further messages by login in with your guest id:     

4. If you have not been answered within 6 hours, write to us by e-mail:

If you apply and buy a decoder within 36 hours of infection, you pay 2 times less.

 * Do not rename encrypted files.
 * Do not try to decrypt your data using third party software, it may cause permanent data loss.
 * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Screenshot of files with “.[].btc” extension added by the ransomware:
Btc Ransomware - encrypt files with .[].btc extension

Use GridinSoft Anti-Malware to remove Btc 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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