Nuis Virus Ransomware
Nuis is a harmful software application functioning as typical ransomware. Michael Gillespie, the popular malware researcher, very first found this new name in the DJVU ransomware family.
Nuis was developed for the sole function to encrypt all popular file types. Logically, as soon as the encryption is effectively accomplished, the users are unable to get access to them. Nuis virus includes its own “.nuis” to all the encrypted files. For instance, the file “price_list.xls”, as soon as crypted by Nuis, will be titled as “price_list.xls.nuis”. Once the encryption is achieved, Nuis puts its own special text file (_readme.txt) into all the folders that keep the encrypted files.
The message stated by text file asking for the random os extremely similar to the notices given by other ransomware dangers coming from the DJVU family. The warning essentially indicates that the information has been secured and the only solution to get access to it is to use a special standalone key. Regretfully, this statement is definitely real.
The technique to secure the files used by Nuis is not entirely looked into. However, there is no doubt that each computer system owner may be provided a special decryption key, which is definitely distinct. It is exceptionally hard to recuperate the data without the suitable key in place.
“Don’t worry, you can return all your files!”, from text file message:
One more peculiarity of the Nuis infection is that the users are not able 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 released the Nuis ransomware into the world wide web. In order to get the key and bring back the crucial information, the users are told to connect with the frauds by means of email or by telegram and to pay the ransom in the amount of $980.
The message likewise states that the people should get in touch with the Nuis authors within 72 hours upon the minute of the data encryption. The alert suggests that by doing so individuals will acquire a 50% discount rate, for that reason, the ransom amount falls to $490.
Nuis encrypted your information, however, it might not be the only threat on your computer. Plus, the ransomware may be hidden deep in the system. To detect and erase the danger entirely, we advise you to refer to the help of GridinSoft Anti-Malware tool.
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No matter what the amount of the ransom is, we highly encourage that you do not pay the ransom. There is no guarantee that these online scoundrels will keep their promises, so they might not care at all what the victims feel about the encryption, even when the amount of the ransom is gotten into their accounts. Hence, paying ransom frequently does not result in a successful healing. So, the users might just lose their money for absolutely nothing.
Likewise, we advise you not to get in touch with the frauds as they advise. Do not transfer cash into their wallets. There are no applications that might break the Nuis virus or restore the data at no cost. For that reason, the only correct decision is to restore the information from possible backups (if available).
Virus Summary
| Name | Nuis Ransomware |
| File Extension | nuis |
| 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 AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .nuis extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Nuis Removal Tool | GridinSoft Anti-Malware |
| Nuis Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now filled with infections similar to the Nuis virus. For example, this particular hazard is essentially identical to Brusaf and other ransomware-type infections. These damaging energies have actually been established in order to secure the essential information and reveal the need for the users to pay the ransom. All these infections utilize the similar algorithm to produce the particular key for successful files decryption.
Unless the Nuis ransomware is still under the development procedure or has got some hidden bugs, it is not possible to bring back the data manually. Therefore, the only working service to prevent the loss of your important information is to regularly keep current backups of all your essential files.
Another essential piece of guidance is to save the backups on unique storage not connected to your primary computer. For instance, you may keep it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your system drive is really risky, given that the backup might likewise be encrypted by the Nuis infection.
Leakages for the Nuis ransomware attack.
Nuis utilizes many paths to infiltrate the vulnerable computer systems. It is not particular what particular approach was utilized in your case, nevertheless, the intrusion might happen via the following channels:
- bundling with third-party programs, generally free software;
- spam e-mails from the unknown senders;
- websites offering free hosting;
- P2P (peer-to-peer) torrent software.
There are times when the Nuis may disguise itself as some authentic application, for example, through the misleading informs demanding installation of some software application upgrade. This is the most common technique utilized by the frauds to inject the Nuis ransomware files into the system. By doing this users partly participate in its installation, without clearly comprehending the danger.
Additionally, the frauds might send unsolicited spam e-mail with challenging informs motivating the people to open dubious attachments or click some download links, for instance, those encouraging individuals to open specific pictures, text files, tax files and other info.
No doubt, opening these files or clicking on the malicious links may basically damage the system. Fake Acrobat Reader update alerts may result in the Nuis ransomware infiltration. Likewise, downloading the split software may furthermore include the ransomware installer. The last however not the least, setup of Nuis may happen through some Trojan horses that might be set up stealthily into the system and without the user’s direct authorization and even consent.
Preventing the Nuis ransomware attack.
Of course, there is no absolute guarantee that your computer system will be always free of any malware attacks, however, we want to share some beneficial pointers with you to make it much safer. Ensure to pay extremely very close attention while searching the web and particularly while downloading cost-free programs. Do not open any dubious email accessories, especially if the sender is not understood to you.
Do not forget that specific freeware installer might likewise contain some other additional apps in the package. These additional applications may be very damaging. It is of utmost value to keep your anti-virus software application and your operating system in basic to be always effectively updated.
It is quite logical that downloading pirated apps is illegal, nevertheless, additionally, such unapproved software application use may also bring severe damage to your computer. For this reason, do not download any split programs. Plus, the truth that your present anti-virus did not protect the system from the Nuis ransomware is a good reason for you to reevaluate your choices and change to another program that can render the protecting functions on a better level.
Below please find the quotation from the Nuis 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: restorealldata@firemail.cc Reserve e-mail address to contact us: gorentos@bitmessage.ch Our Telegram account: @datarestore
Screenshot of files with “.nuis” extension added by the virus:”
Use GridinSoft Anti-Malware to remove Nuis 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.
Use Emsisoft Decryptor for restore nuis files
You can get 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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