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Brrr ransomware. How to remove? (Uninstall guide)

removal by Jake Doevan - - | Type: Ransomware

Brrr ransomware — another file-locking cryptovirus that offers to decrypt one file before paying the ransom

Brrr ransomware
Brrr ransomware is a new version of Dharma ransomware that was discovered in September.
Brrr ransomware is a virus that encrypts data and marks files with .brrr appendix. The virus is yet another version of Dharma ransomware that is already known as an active and dangerous crypto locker. This family is known for a few years now as a harmful infection that uses AES and RSA encryption[1] methods to modify various files on the system. This encryption process starts as soon as this virus infiltrates the system. Since files are marked with .[paydecryption@qq.com].brrr file extension you should also see a ransom note on each folder containing modified data. Two files with names Info.hta or FILES ENCRYPTED.txt contain more information about this attack and instructions on what the victim should do next. Brrr ransomware developers encourage users to pay the demanded ransom to get the encoded data back. 

Name Brrr ransomware
Type Cryptovirus
Family Dharma
Active since 2016
Ransom note Info.hta or FILES ENCRYPTED.txt
Contact email paydecryption@qq.com
File extension [paydecryption@qq.com].brrr
Distribution Infected spam email attachments
Decryption Other versions can be decrypted
Elimination Use Reimage for Brrr ransomware removal

Brrr ransomware virus locks various data, such as photos, videos, documents or even archives. Since it a variant of Dharma, developers left the same patterns for the cyber threat. Ransom note placed in files with the same names as previous variants. Info.hta or FILES ENCRYPTED.txt contain similar to other versions message about the attack and encryption. In this ransom message, you can also see that developers suggest to test decrypt one file and contact them via paydecryption@qq.com email. While experts recommend not to contact cybercriminals, Brrr ransomware is not decryptable at the time of the writing.

Researchers noted that this variant of Dharma is mainly spread using unprotected RDP[2] connections in what is called brute-force attacks. Crooks scan computers using the internet and pick the ones that are vulnerable. Then, using a pre-determined list of passwords and login names, they break in and install Brrr malware on the machine. 

At the time of the writing, Brrr ransomware is detected by 43 AVs[3] under the following names:

  • Win32:Malware-gen
  • TR/Dropper.Gen
  • W32.RansomeDNZ.Trojan
  • Ransom.Crysis.Generic
  • Ransom.Crysis/Variant
  • Trojan-Ransom.Win32.Crysis.a
  • Trojan-Ransom.Win32.Crusis.to

To remove Brrr ransomware, you must use reputable security programs. We suggest using Reimage, Malwarebytes MalwarebytesCombo Cleaner or any other reputable anti-virus application that would be able to detect the cyber threat.

As soon as Brrr ransomware removal is performed, you can attempt to recover the locked data. As we already mentioned, it is still not decryptable. However, do not lose hope, as there are alternative methods that might be able to help you. Please check the list and guide below this article.

Remember that researchers[4] advise not to contact malicious hackers behind Brrr virus because they are not trustworthy. Crooks might send you malware executable instead, or ignore you entirely after they receive the money.

This variant is spread by breaking into the computer via the RDP

Remote Desktop Protocol is a useful feature that is used by both regular users and IT professionals. It allows one to connect to a remote PC and control it. Unfortunately, not many people put enough effort to protect these connections and end up infected with such a dangerous threat like ransomware.

Brute force attacks are widespread when it comes to ransomware distribution, and this fact should not be ignored. Since hackers are using a predetermined list of most common words used as usernames and passwords, it is never advisable making “qwerty” or similar as your password. Instead, use a complicated combination of numbers, letters, upper and lower case letters, etc. Alternatively, a trusted password management app can keep your them safe and away from crooks.

Additionally, the malware can also be spread using spam emails, exploit kits, malicious websites, and similar. Therefore, make sure to protect yourself by installing reputable anti-virus with a real-time protection feature.

Eliminate Brrr ransomware from your device right now

Ransomware attack can result in damage to your data and compromise the safety of your of your device in general. You need to remove Brrr ransomware as soon as possible. Scan your system with tools like Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes and get rid of threats and restore registry entries back to normal.

As soon as Brrr ransomware removal using anti-malware tools is complete, the file recovery procedure can be started. This is important because any newly uploaded files will be encrypted immediately if malware is still present. Therefore, enter Safe Mode with Networking or use System Restore to stop the threat. Then, use your backed up files and copy them to your computer. If you do not have a backup, you can attempt to recover your data using third-party apps.

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More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
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Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove Brrr virus, follow these steps:

Remove Brrr using Safe Mode with Networking

Firstly, reboot your device in Safe Mode with Networking and scan your device with antivirus or anti-malware. Follow the guide:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Brrr

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Brrr removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Brrr using System Restore

Enabling System Restore feature is also beneficial when dealing with Brrr ransomware:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Brrr. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Brrr removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Brrr from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Brrr, you can use several methods to restore them:

Brrr ransomware encrypts various files, and you can use Data Recovery Pro to restore them

Data Recovery Pro can also restore accidentally deleted files

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Brrr ransomware;
  • Restore them.

Windows Previous Versions feature restores files after encryption process

This is a feature that can recover your data but only if System Restore was enabled before

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Another data recovery method is using ShadowExplorer for encrypted files

If Brrr ransomware encoded your data but left Shadow Volume copies untouched, you can restore those files with ShadowExplorer

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Decryption tool for this particular version is not available

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Brrr and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes

About the author

Jake Doevan
Jake Doevan - Computer technology expert

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