Remove Gusau Ransomware (Recover .gusau Files)

The purpose of this page is to help victims in removing Gusau ransom virus from the computer using only free and legitimate security applications. Decrypting .gusau infected files is also part of the topic, hence, we can only provide limited solution.

In the event that all you files were transformed into .gusau extension format, this signifies that computer is infected with hazardous virus known technically as Ransomware. This variant belongs to a group of STOP or DJVU malware where infecting a computer via spam email campaign is currently extensive. People behind this Gusau ransomware are also utilizing malicious advertising scheme as alternative method to spread the infection. Via this campaign, the ads often promote a valuable program with appealing features and benefits to influence web users into downloading a copy.

Once executed, virus drops certain executable files on system directories. It will then search the storage for common files and encrypts them with a complex algorithm that according to security experts – requires complex way of decrypting. This is also stated in the Gusau ransom note where attackers clearly mentioned that “only method of recovering files is to purchase decrypt tool and unique key.”

It is very frustrating to read the note but unfortunately, the content especially the part where attacker asserts that paying the ransom money is the only way to recover .Gusau file is somehow correct. Confronting this type of infection requires a great deal of urgency due to involved important files. Immediate decryption of Gusau-infected files also necessitate for hefty ransom payment of $980 or $490 if ever victims can execute the transaction within 72 hours.

For Gusau ransomware victims who do not want to pay the ransom money, which security experts suggests as the right thing to do, just hope and wait for the free .Gusau file decryption tool. These malware researchers are doing their best to reverse-engineer the ransom virus in hopes of developing a tool that can totally decrypt files infected by Gusau ransomware.

In the meantime, archiving important files is advice before removing the virus from infected computer.

Screenshot Image:

Gusau Ransomware

Ways to recover files encrypted by Gusau Ransomware

Gusau decryption tool (STOPDecrypter) is a recovery software that may be useful in restoring .gusau infected files if the malware uses Offline Key during the encryption process. You can download the tool from our Ransomware Decryption Tools archive.

Decryption Tool

Alternative Solution:

If your PC is running on Windows Vista and Windows 7, there is a feature called ‘Previous Versions’. Although this function only works if restore point was saved prior to Gusau infection or if System Protection is enabled on the computer. Use Previous Versions to recover files without having to pay for the private key.

Important:

Before proceeding with the removal procedure, it is important that you backup the following items for possible decryption when tool is available.
– HKEY_CURRENT_USER\Software\Gusau Registry key (if there is any)
– Ransom note file (showing the unique ID)
– Encrypted files

Gusau Ransomware Removal Procedures

Systematic procedures to get rid of the threat are presented on this section. Make sure to scan the computer with suggested tools and scanners.

Step 1 : Reboot Windows Into Safe Mode With Networking.

First thing you should do is reboot the computer in Safe Mode with Networking to avoid Gusau Ransomware from loading at start-up.

NOTE: You will need to PRINT or BOOKMARK this procedure, as we have to restart the computer during the removal process.

1 Remove all media such as Memory Card, cd, dvd, and USB devices. Then, restart the computer.

2 Boot Windows computer into SafeMode with Networking.

Instructions for Windows XP, Windows Vista, and Windows 7 system
a) Before Windows begins to load, press F8 on your keyboard.
b) It will display the Advanced Boot Options menu. Select Safe Mode with Networking.

Procedures for Windows 8 and Windows 10
a) Before Windows begins to load, press Shift and F8 on your keyboard.
b) On Recovery interface, click on 'See advanced repair options'.
c) Next, click on Troubleshoot option.
d) Then, select Advanced options from the list.
e) Lastly, please choose Windows Startup Settings and click on Restart. When Windows restarts, you will be send to a familiar Advanced Boot Options screen.
f) Select Safe Mode with Networking from the selections menu.

SafeMode

Step 2 : Detect and Remove Gusau Ransomware with Anti-malware Tool

3 Once the computer boots into Safe Mode with Networking, download the Removal Tool and save it on your Desktop or any location on your PC.

Download Tool

4 When finished downloading, locate and double-click on the file to install the application. Windows' User Account Control will prompt at this point, please click Yes to continue installing the program.

5 Follow the prompts and install with default configuration.

6 Before the installation completes, check prompts that software will run and update on itself.

7 Click Finish. Program will run automatically and you will be prompted to update the program before doing a scan. Please download needed update.

8 When finished updating, the tool will run. Select Perform full scan on main screen to check your computer thoroughly.

9 Scanning may take a while. When done, click on Show Results.

10 Make sure that all detected threats are checked, click on Remove Selected. This will delete all files and registry entries that belongs to Gusau Ransomware.

11 Finally, restart your computer.

Note: If Gusau Ransomware prevents mbam-setup.exe from downloading. Download the software from another computer. Renaming it to something like 'anything.exe' can help elude the malware.

Step 3 : Additional Anti-virus and Anti-rootkit Scans

Ensure that no more files of Gusau Ransomware are left inside the computer

12 Click on the button below to download Norton Power Eraser from official web site. Save it to your desktop or any location of your choice.

NPE Download

13 Once the file is downloaded, navigate its location and double-click on the icon (NPE.exe) to launch the antivirus program.

14 Norton Power Eraser will run. If it prompts for End User License Agreement, please click on Accept.

15 On NPE main window, click on Advanced. We will attempt to remove Gusau Ransomware components without restarting the computer.

Advance Scan

16 On next window, select System Scan and click on Scan now to perform standard scan on your computer.

Scan the System

17 NPE will proceed with the scan. It will search for Trojans, viruses, and malware like Gusau Ransomware. This may take some time, depending on the number of files currently stored on the computer.

18 When scan is complete. All detected risks are listed. Remove them and restart Windows if necessary.

Alternative Removal Procedure for Gusau Ransomware

Use Windows System Restore to return Windows to previous state

During an infection, Gusau Ransomware drops various files and registry entries. The threat intentionally hides system files by setting options in the registry. With these rigid changes, the best solution is to return Windows to previous working state is through System Restore.

To verify if System Restore is active on your computer, please follow the instructions below to access this feature.

Access System Restore on Windows XP, Windows Vista, and Windows 7

a) Go to Start Menu, then under 'Run' or 'Search Program and Files' field, type rstrui.
b) Then, press Enter on the keyboard to open System Restore Settings.

rstrui-win7

Open System Restore on Windows 8 and Windows 10

a) Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
b) Right-click on the icon and select Run from the list. This will open a Run dialog box.
c) Type rstrui on the 'Open' field and click on OK to initiate the command.

rstrui-win8

If previous restore point is saved, you may proceed with Windows System Restore. Click here to see the full procedure.

FAQs

Is Gusau Ransomware Dangerous?

Yes, Gusau Ransomware can badly affect your computer and slow down its performance and usability.

Can I Remove Gusau Ransomware from my Computer?

Yes, Gusau Ransomware can be removed by downloading our recommended antivirus software and scanner.

How Easy is it to Remove Gusau Ransomware Virus?

Nearly all paid antivirus scanners and removal tools should help remove the Gusau Ransomware virus from your computer.

Once I remove Gusau Ransomware do I still need antivirus?

Yes, new viruses such as Gusau Ransomware are created everyday and the only way to stay 100% protected is to use antivirus on your device.

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About Adam Green

Adam is an experienced security aficionado who has written 100s of articles about malware, VPNs and staying secure online. He has been writing for PreciseSecurity.com since 2010.

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