Ransomware | 08/26/2019

How to remove Brusaf ransomware from your system?

About: Brusaf Ransomware is a malicious program designed with strong financial motive. It encrypts the files & blackmails the user to pay hefty ransom, usually in bitcoins.

| Ransomware | How to remove Brusaf ransomware from your system?

Understanding Brusaf Ransomware

The developers of ransomware are coming up with more dangerous variants with each passing day. Recently, DJVU ransomware family welcomes another high-risk member! Brusaf ransomware is what developers call it! Alike its siblings, the malicious crypto virus aims at extorting large amount of money from users. This article will give you the gist about the menace caused by dangerous .brusaf file virus in targeted system.

Brusaf-file virus

Once your system is encrypted with Brusaf ransomware, it will immediately encrypt the stored files on your system. The strong algorithm used by the developers, make it a difficult task to decrypt .Brusaf files manually. This encryption eventually ends with demanding large amount of ransom. In order to restore the corrupted files, you will need to download Brusaf decrypter tool ASAP.

 

Threat Summary
Name Brusaf Ransomware
Type Ransomware
Category Malware
Targeted OS Windows
Symptoms Once the files are locked, they can only be restored with Brusaf decrypter. Additionally, you can get this decryption tool only after paying the asked ransom.
Damage You cannot open a locked file without paying the asked ransom. Additionally, it may increase the malicious payload in your system.
Removal Download Removal Tool

 

Distribution Technique

The infiltration of Brusaf ransomware is primarily conducted via the spam campaigns. During spam campaign, hackers sent spammed e-mails with malicious attachments to the targeted system. Though the e-mails look legitimate, but the danger lies within the content or the attachment. Most of the time, such e-mails are sent with the name of some well-known shipping companies or financial organisations. PayPal, FedEx, eBay or DHL are a few mentions. Generally, it informs you about an undelivered package or the invoice of a shipment that you made. Either way, when you open/download the attachment, your system is exposed to the risk of destructive crypto virus – Brusaf. The content of attachment is basically the hidden malicious macros. Once opened, it triggers the script of .Brusaf extension and launches the malware payload on your system.

Even though the sender of such e-mails looks trustworthy or real, you should avoid opening such suspicious e-mails or files. Also, immediately delete such questionable e-mails from your inbox.

Spam attacks are not the only way to spread this infection. There are many more! Software update is another way! Fake updaters may infiltrate your system by exploiting the outdated bugs or installing other malicious applications in your system without your knowledge.

To conclude, we can say that the main reason for such infiltration is lack of proper knowledge and reckless behavior. Hence, be careful during your online sessions.

 

Threat Behavior

Being the newest member of infamous DJVU ransomware family, Brusaf drops one or more executable files in “%AppData%” windows directory. It is followed by the modifications in windows registry entries. Furthermore, as soon as the destructive Brusaf extension sneaks in your system, it scans every inch to locate the targeted files! The files may include your personal documents, images, audio-video files and even backups. After successful scanning and allocating, Brusaf initiates to execute its mal intentions.

The destruction starts with the encryption process! The malicious crypto virus, lock the files using strong cryptographic algorithm. Simultaneously, to show its unethical presence, it appends .Brusaf extension to the filenames.

After successful infiltration, the nasty crypto virus generates a unique .Brusaf decryption tool. Unfortunately, it is true! Furthermore, this decryption tool/key is stored on the hacker’s server. Hence, getting it is not an easy task! In order to recover .Brusaf files, you have to pay hefty ransom amount. Cyber criminals demand this ransom in the form of bitcoins – a crypto currency! Hackers say, if the victims fail to make the payment within the prescribed time, they might lose their data permanently. Hence, with the fear of losing the data, victims get ready to pay the demanded amount. However, even paying does not assure decryption! Instead, it encourages these crooks to commence another mal project. Below is the detailed description about the amount of ransom demanded and ransom note.

Ransom Note & Ransom Amount

The mastermind behind Brusaf ransomware demands hefty ransom in exchange of Brusaf decrypter. The price for decryption key is $980, which is demanded by cyber crooks in the form of bitcoins. In addition, the victim users are encouraged to make the payment ASAP by offering discount of 50% in the ransom. Hence, the price directly reduced to $490! However, to claim the offer, you have to contact the hackers within 72 hours of .Brusaf file virus attack. Users, the threat is not over yet! To demand the ransom, a text file is generated with the name ‘_readme.txt’ and copies are dropped in every folder containing .brusaf files.

Ransom – Demanding Message:

Ransom note - Brusaf

The ransom-demanding file will display the ransom note on your screen whenever you try to open a locked file. This ransom note will assist you to make the payment successfully. Even if you face any difficulty, you can contact the hackers on the given e-mail addresses: gorentos@bitmessage.ch or gorentos@firemail.cc.

Moreover, hackers trickily trap the users to get the payment done. They permit you to send one .Brusaf file, which they decrypt for free. However, even after paying the ransom, there is no guarantee about the decryption of encrypted files. Hence, it is advisable to remove Brusaf ransomware from your system or download Brusaf decrypter tool.

Following are a few possible steps to easily uninstall Brusaf file virus.

Download Vipre Malware Remover

Removal guidelines for Brusaf Ransomware

 

STEP A: Reboot your system to Safe Mode

Windows 7/ Vista/ XP

  1. Click on Windows icon present in the lower left corner of the computer screen.
  2. Select and click  Restart.
  3. When the screen goes blank, Keep tapping  F8  Key until you see the Advanced Boot Options window.
  4. With the help of arrow keys on keyboard, Select Safe Mode with Networking  option from the list and press the Enter Key. The system will then restart to Safe Mode with Networking.

5 Click on the username and enter the password (if any).

Windows 10 / Windows 8

  1. Press and hold the Shift Key and simultaneously click on the windows icon present in the lower left corner of your computer screen.
  2. While the Shift key is still pressed click on the Power button and then click on Restart.
  3. Now select Troubleshoot → Advanced options → Startup Settings.
  4. When the Startup Settings screen appears which is the first screen to appear after restart, select and click on Enable Safe Mode with Networking. The system will then restart to Safe Mode with Networking.
  5. Once the system restarts in Safe Mode, click on the username and enter the password, if any to log in.

STEP B: Delete the suspicious file from Configuration Settings

  1. Type “Msconfig” in search box / Run Box, select it and press Enter.
  2. Click on “Services” Tab and click on “Hide all Microsoft services”.
  3. Select Brusaf ransomware from the list of remaining services and disable it by removing the tick mark from the checkbox and click on Apply button.

Windows 7

  1. Click on the next tab – “Startup”.
  2. Find any blank or suspicious entry or the entry with Brusaf ransomware mentioned and remove the check mark.
  3. Click on Apply button and then click on OK.

Windows 10

  1. Click on the next tab – “Startup”.
  2. Take the mouse cursor to ‘Open task Manager‘ link and click on it.  This opens the Task Manager window.
  3. Find any blank or suspicious entry or the entry with Brusaf ransomware mentioned and click on it.
  4. Then click on Disable button.

STEP C: Remove malicious file from Command Prompt

Once the system starts, ensure to use an account with administrative privilege to access Safe Mode with Command Prompt.

After the user enters admin credentials, Command prompt window is displayed wherein you are entitled to enter the below commands:

  1. Type the command “sc delete Brusaf ransomware” in the command prompt and press Enter.
  2. Type “exit” to exit the command prompt and restart the system in safe mode with command prompt.

 

STEP D: Restore the system files & folders

Method 1 using Control Panel

  1. Click on the ‘Start’ button on the taskbar. This will open the Start menu.
  2. Click on the ‘Control Panel’ button in the Start menu. This will open the control panel window.
  3. In the Control Panel window, click on the ‘View by:’ button on the top right. Select the Large Icon option
  4. In the control Panel window click on the ‘Recovery Icon’. This will open a window that will ask ‘Restore the computer to an earlier point in time’.
  5. Click on the ‘Open system restore’ button. This will open the ‘system restore ’window where you need to click on the Next Button.
  6.  Select the restore point that is prior the infiltration of Brusaf ransomware. After doing that, click Next.
  7. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by Brusaf ransomware.

OR

Method 2 using Command Prompt

  1. Type cmd in the search box and click on the command prompt to open the Command Prompt window. box and clicking on it.
  2. Once the Command Prompt window shows up, enter cd restore and click Enter.(Ensure that you in the system32 directory of Windows folder in C Drive)
  3. Now type rstrui and press Enter again.
  4. When a new window shows up, click Next and select your restore point that is prior the infiltration of Brusaf ransomware. After doing that, click Next.
  5. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by Brusaf ransomware.

 

OR

Method 3 : Directly type 'rstrui' in the search box

  1. Type ‘Rstrui’ in the search box present on the task bar. This will open the System restore dialog box.

Continue to follow steps 4 & 5 of Method 2 to restore the System Files and settings.

 

Tips to prevent your system from Brusaf Ransomware

  1. Keeping the Operating System Updated- In order to remain protected and avoid such infections, it is recommended to keep your Operating System updated by enabling the automatic update on your system. The systems with outdated or older versions of Operating System become an easy target for the attackers.
  2. Resist clicking on spam emails – One of the major techniques used for malware distribution is forwarding spam emails to the user. The system gets infected as soon as the user clicks on the attachment. These mails appear to be genuine, so be aware and resist falling for these tricks.
  3. Keep an eye on third party installations- It is quite important that you take due care while installing any third party applications for they are major source of such infections. Such malware programs come bundled with the free applications thereby requiring the user to remain cautious.
  4. Regular periodical backup- In order to keep your data and files safe, it is recommended to take regular back up of all your data and files either on an external drive or cloud.
  5. Use Anti-Virus Protection- We strongly recommend the use of antivirus protection/internet security in your PC like Vipre and Kaspersky so that it remains safe.
  6. Enable the Ad Blocker/Popup Blocker in your browser- Enabling the popup blocker/ ad blocker in your chosen browser will help you to stay protected from annoying adware.

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