The virus has appeared which uses a very strong encryption to encode files of infected computers. The virus is known as BitStak Ransomware, and it demands from affected users to make a payoff of roughly 50 US dollars in BitCoins (~0.08BTC). All users who have been affected by the BitStak Ransomware, are strongly advised not to pay any ransom money and instead focus on removing this malware from their computers. A preferable way for removal and file restoration you will find if you read this article thoroughly.
|Short Description||The malware encrypts users’ files asking the sum of approximately 50 US dollars for decryption.|
|Symptoms||The user may witness ransom message set as a wallpaper. Files no longer accessible with changed names and an added .bitstak file extension to them.|
|Detection Tool|| See If Your System Has Been Affected by malware |
Malware Removal Tool
|User Experience||Join our forum to Discuss BitStak Ransomware.|
|Data Recovery Tool||Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.|
BitStak Ransomware – Spreading Methods
BitStak Ransomware – Activity Overview
As soon as it has been activated on the victim’s PC, BitStak may create a malicious executable that may have different names and be situated in key Windows directories, for example:
After creating its malicious executable(s), BitStak may use the Windows Registry Editor to add malicious registry entries in it. This may be done for the virus to run on Windows boot and start encrypting files. The following keys may be targeted by BitStak:
As soon as it runs on startup, BitStak Ransomware may target the following folders for encryption:
- %Program Files%
- %Program Files (x86)%
BitStak Ransomware has also been reported to detect and encrypt every file of the following type, if existing:
Not only this, but BitStak Ransomware also adds the .bitstak file extension and in addition to that changes the names of the encrypted files with alpha-numerical sequence, for example, if the original file is New Text Document.txt, the encrypted file is Z8932h3.bitstak
After doing this, BitStak uses a picture which it may set as a wallpaper on the infected machine. The picture has the following ransom message:
→ “Your all files are locked and encrypted with a strong encryption method. You cannot get your files back without paying. We expect you to make a payment in 3 days, or your files will be permanently deleted.
Your all files are locked. To release your files, you need to pay 40(eur) fee using Bitcoin as a payment method. If you have any external hard-drives plugged, remember to plug them before restoring or you won’t be able to restore them later.
40.00 EUR / 0.07867 BTC or…
45.464 USD / 0.07867 BTC
Or pay with Blockchain mobile app…
Verify your payment so you can get your files back.
Already paid? Verify now to restore your files.”
This is one of the few ransomware viruses that allow payment via a Blockchain mobile app. This is very clever because the payment is faster and easier as well. Cyber-criminals behind BlockChain Ransomware have really thought this through. Despite the offer, we strongly advise you not to pay the ransom fee and read our proposals for removal and file restoration below.
BitStak Ransomware – Removal and File Restoration
To remove BitStak, we advise you to use the instructions below. They are divided on manual and automatically based on how much experience you have with the removal of malware. In any case, we advise you to use the Automatic options, because for obvious reasons:
- It will remove other malware as well.
- All BitStak files and registry entries will be detected and permanently removed without any damage to the encrypted files.
- Your PC should be protected in the future from threats and unwanted programs and e-mails.
If you wish to restore your files, encrypted by BitStak for the moment decryptor has not been released. However, be advised that waiting for a decryptor to be developed by researchers is a way better choice than paying any ransom money to criminals and supporting their malicious activity this way. In the mean time we also advise you to check for backups, try system restore and data restoration software as well as Kaspersky’s free decryptors as well. You can find instructions for them if you check step “3. Restore files encrypted by BitStak” below.
- Guide 1: How to Remove BitStak from Windows.
- Guide 2: Get rid of BitStak from Mac OS X.
- Guide 3: Remove BitStak from Google Chrome.
- Guide 4: Erase BitStak from Mozilla Firefox.
- Guide 5: Uninstall BitStak from Microsoft Edge.
- Guide 6: Remove BitStak from Safari.
- Guide 7: Eliminate BitStak from Internet Explorer.
How to Remove BitStak from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove BitStak
Step 2: Uninstall BitStak and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by BitStak on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by BitStak there. This can happen by following the steps underneath:
Get rid of BitStak from Mac OS X.
Step 1: Uninstall BitStak and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove BitStak via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove malware from your Mac
When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Remove BitStak from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Erase BitStak from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Uninstall BitStak from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Remove BitStak from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the BitStak will be removed.
Eliminate BitStak from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.