Gujd Virus – Details
Gujd is a destructive software application functioning as typical ransomware. Michael Gillespie, the popular virus researcher, very first found this new name in the DJVU ransomware family.
Gujd was created for the sole function to encrypt all popular file types. Realistically, as soon as the file encryption is effectively accomplished, the users are not able to get access to them. Gujd virus adds its own “.gujd” to all the encrypted files. For instance, the file “price_list.xls”, as soon as crypted by Gujd, will be titled as “price_list.xls.gujd”. As soon as the encryption is accomplished, Gujd puts its own distinct text file (_readme.txt) into all the folders that save the encrypted files.
The message mentioned by _readme.txt asking for the random os extremely similar to the notifications provided by other ransomware risks coming from the DJVU family. The warning generally indicates that the data has been encrypted and the only option to get access to it is to use an unique standalone key. Regretfully, this declaration is absolutely real.
The technique to secure the files utilized by Gujd is not completely looked into. Nevertheless, there is no doubt that each computer system owner may be released an unique decryption key, which is absolutely unique. It is very hard to recover the information without the appropriate key in place.
“Don’t worry, you can return all your files!”, from _readme.txt message:
One more peculiarity of the Gujd virus is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the total control by the crooks who have actually introduced the Gujd virus into the internet. In order to get the key and restore the crucial data, the users are informed to connect with the scams through email or by telegram and to pay the ransom in the quantity of $980.
The message likewise says that the people ought to contact the Gujd authors within 72 hours upon the moment of the data encryption. The alert indicates that by doing so individuals will obtain a 50% discount rate, for that reason, the ransom amount falls to $490.
No matter what the quantity of the ransom is, we strongly recommend that you do not pay the ransom. There is no assurance that these online criminals will keep their pledges, so they may not care at all what the victims feel about the encryption, even when the amount of the ransom is gotten into their accounts. For this reason, paying ransom frequently does not result in a successful healing. So, the users may just lose their money for nothing.
Likewise, we urge you not to get in touch with the frauds as they advise. Do not move money into their wallets. There are no applications that could break the Gujd virus or restore the information for free. Therefore, the only appropriate choice is to restore the information from possible backups (if readily available).
|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 AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .gujd extension to all the files modified by it.|
|Distribution Method||Adware bundles and software cracks|
|Similar Infections||Lokas, Besub, Nusar|
|Gujd Removal Tool||GridinSoft Anti-Malware|
|Gujd Decryption Tool||Emsisoft Djvu Decryptor|
Do not forget that the Web is now filled with infections comparable to the Gujd ransomware. For example, this specific hazard is basically similar to Brusaf and other ransomware-type infections. These harmful energies have been developed in order to encrypt the important information and express the demand for the users to pay the ransom. All these infections use the identical algorithm to generate the particular key for successful information decryption.
Unless the Gujd ransomware is still under the advancement procedure or has actually got some hidden bugs, it is not possible to restore the data by hand. Hence, the only working service to avoid the loss of your essential information is to frequently preserve up-to-date backups of all your important files.
Another essential piece of suggestions is to save the backups on special storage not linked to your main computer. For example, you might store it on the USB Flash Drive, or some external disk drive, or by using the cloud data storage services. Keeping the backups on your routine drive is really risky, given that the backup may also be encrypted by the Gujd ransomware.
Leaks for the Gujd ransomware attack.
Gujd uses lots of courses to infiltrate the vulnerable computer systems. It is not certain what specific method was utilized in your case, nevertheless, the invasion may happen by means of the following channels:
- bundling with third-party programs, primarily free apps;
- spam emails from the unidentified senders;
- websites providing complimentary hosting;
- P2P (peer-to-peer) torrent downloads.
There are times when the Gujd virus might disguise itself as some real application, for instance, through the misleading informs requiring installation of some software upgrade. This is the most common trick utilized by the scams to inject the Gujd ransomware files into the system. In this manner users partly take part in its setup, without plainly comprehending the threat.
Moreover, the frauds may send out unsolicited spam email with challenging notifies encouraging the people to open suspicious attachments or click some download links, for instance, those motivating the people to open certain images, text files, tax files and other info.
No doubt, opening these files or clicking the harmful links may essentially harm the system. Fake Acrobat Reader update notifications may cause the Gujd ransomware infiltration. Similarly, downloading the cracked software application might additionally consist of the ransomware installer. The last however not the least, installation of Gujd might take place through some Trojan horses that might be set up stealthily into the system and without the user’s direct authorization and even consent.
Avoiding the Gujd ransomware injection.
Of course, there is no absolute guarantee that your computer will be always without any malware attacks, however, we wish to share some useful tips with you to make it safer. Ensure to pay extremely close attention while browsing the web and specifically while getting cost-free programs. Do not open any dubious email attachments, particularly if the sender is not understood to you.
Do not forget that particular freeware installer might also contain some other extra apps in the package. These additional applications might be really damaging. It is of utmost significance to keep your anti-virus software and your os in basic to be constantly properly upgraded.
It is rather logical that downloading cracked software is prohibited, nevertheless, in addition, such unapproved software usage may likewise bring serious damage to your computer. Thus, do not download any cracked programs. Plus, the truth that your current anti-virus did not protect the system from the Gujd ransomware is an excellent factor for you to reassess your options and switch to another program that can render the protecting functions on a far better level.
Below please find the quotation from the Gujd 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-2P5WrE5b9f 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: email@example.com Reserve e-mail address to contact us: firstname.lastname@example.org Our Telegram account: @datarestore
Screenshot of files with “.gujd” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Gujd 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”.
Use Emsisoft Decryptor for restore gujd files
You can download Emsisoft Decryptor by clicking the button below:
- Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
- Once the license terms are accepted, the primary decryptor user interface opens.
- By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
- Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
- After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
- The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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