Gusau Virus Removal Guide (+Decrypt .gusau files) – DJVU Ransomware
Gusau Virus Ransomware
The Gusau mean a ransomware-type infection. Initially, it was revealed by Michael Gillespie. The infection comes from the DJVU ransomware family. Gusau was elaborated specifically to encrypt all major file types. As soon as the file is encrypted people are unable to use them. Gusau adds the “.gusau” extension for each file encrypted by it. For example, the file “myphoto.jpg“, when encrypted by Gusau, will be renamed into “myphoto.jpg.gusau. As quickly as the encryption is completed, Gusau places a special text file (such as “_readme.txt“) into every folder containing the encrypted data.The message given by Gusau text file asking for the ransom is definitely the same as the statements given by other ransomware virus representatives coming from the DJVU family. It actually discusses that the information is encrypted which the only way to bring back it is to use a a special decryption key. Regretfully, this is definitely true. The kind of cryptography mechanism applied by Gusau is still not properly examined. Still, it is definitely certain that each victim may be given the specific decryption key, which is absolutely distinct. It is difficult to bring back the files without the key available.
“Don’t worry, you can return all your files!”, Gusau message:
Another technique of Gusau is that the victims cannot gain access to the key. The key is saved on a specific server run by the frauds related to Gusau ransomware. To get the key and recover the important info people have to pay the ransom, which totals up to $980. To get the payment information users are instructed to contact the frauds through e-mail or telegram. The alert also shows that the users need to contact the Gusau developers within 72 hours after the files encryption took place. The message says that doing so users will get a 50% discount, so the ransom quantity will drop down to $490.
Gusau encrypted your documents, but that might not be the only damage done to you. The ransomware might still be hidingon your computer. To identify and remove whether this holds true, we suggest downloading GridinSoft Anti-Malware tool.
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Nevertheless, irrespective of the asked for amount, people should keep away from paying the ransom. Cyber frauds are not fair, so they tend to entirely ignore what their victims feel about the issue, even when the payment reaches their pockets. This is why paying the ransom typically does not provide any positive result and people just lose their money for nothing.
We highly recommend that you do not contact these crooks and certainly do not transfer money into their accounts. It is said to admit that there are no utilities able to crack Gusau ransomware and to recover the data data free of charge. Hence, the just right decision is to recover the lost information from the available backup.
Virus Summary
| Name | Gusau Ransomware |
| File Extension | gusau |
| Type | Ransomware |
| Family | DJVU |
| Short Description | The 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. |
| Symptoms | File encryption by the ransomware is performed by means of the RSA-1024 encryption algorithm. Once the encryption is completed, the ransomware adds its special gusau extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Madek, Gehad, Vusad |
| Removal Tool | GridinSoft Anti-Malware |
Remember that the internet is now overwhelmed with threats that look similar to Gusau ransomware. It is similar Madek and many other ransomware-type threats. Destructive programs of such kind are typically elaborated to encrypt crucial information 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 unique decryption key for information decryption.
Thus, as long as the ransomware is still being developed or has some hidden bugs, manually recovering the information is merely not feasible. The only way to avoid the loss of your important information is to frequently create backups of your important information.
Remember that even if you create such backups, they must be put into a special storage utility not connect to your main computer. You may use the USB Memory Stick or external hard disk 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 along with other files, so it’s certainly not a good storage place.
How did ransomware infect my system?
There are several ways used by online scams to distribute Gusau virus. Even though it doubts how precisely Gusau injects your system, there are some leaks through which it may penetrate the system:
- integration with third-party software application, especially freeware;
- spam e-mails from unidentified senders;
- sites rendering free hosting services;
- pirated peer-to-peer (P2P) downloads.
Frequently Gusau virus might be presented as some legitimate software application, for example, in the pop-ups instructing users to carry out some crucial software updates. This is the typical technique used by online frauds to persuade people into downloading and installing Gusau infection manually, by methods of their direct participation in the installation process.
Additionally, the criminals may refer to different e-mail spam techniques to inject harmful codes into PC. 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 encouraging users to open some receipts, files, tax reports or invoices.
Needless to mention, opening such documents or clicking on such dangerous links may significantly damage the PC. Fictitious Adobe Flash Player upgrade informs may result in Gusau virus injection. When it comes to the cracked applications, these illegally downloaded programs may also include destructive codes resulting in Gusau secret installation. Finally, injection of Gusau may occur by ways of Trojans that privately get injected into the system and install malicious utilities without the user’s authorization.
Is there any way to avoid the injection of Gusau ransomware?
Even though there is no 100% guarantee to prevent your PC from getting infected, there are some pieces of suggestions we wish to share with with you. First of all, be really mindful when you browse the web and especially while downloading complimentary apps. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.
Bear in mind that some freeware installers may contain other unwanted utilities in the package, so they may be malicious. Make certain that your current antivirus software and your entire operating system is always duly updated.
Obviously, downloading pirated software is prohibited and may result in necessary damage to be produced your PC. Thus, stay away from downloading cracked software. You are likewise highly advised to reconsider your existing security software and potentially change to another security solution that can render better services of defending your PC.
Below please find the quotation from the Gusau text file:
ATTENTION! Don't worry, you can return all your files! All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-hvv30uAtTY Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: gorentos@bitmessage.ch Reserve e-mail address to contact us: ferast@firemail.cc Our Telegram account: @datarestore
Screenshot of files with “.gusau” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Gusau ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
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.
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.
3. Press Install button for run GridinSoft Anti-Malware.
3.Once installed, GridinSoft Anti-Malware will automatically run.
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.
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.
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