Noos Virus Removal Guide (+Decrypt .noos files)

Noos – General Info

Noos is a malicious software application functioning as typical ransomware. Michael Gillespie, the widely known malware researcher, very first found this new name in the DJVU ransomware family.

Noos was developed for the sole purpose to encrypt all popular file types. Logically, as quickly as the encryption is successfully achieved, the users are not able to get access to them. Noos ransomware includes its own “.noos” to all the encrypted data. For instance, the file “price_list.xls”, as soon as crypted by Noos, will be titled as “price_list.xls.noos”. As soon as the file encryption is achieved, Noos puts its own distinct text file (_readme.txt) into all the folders that keep the encrypted files.

The alert stated by text file requesting the random os really similar to the notices given by other ransomware dangers coming from the DJVU family. The caution essentially shows that the files have been encrypted and the only service to get access to it is to use an unique standalone key. Regretfully, this declaration is absolutely true.

The method to secure the files utilized by Noos is not entirely looked into. However, there is no doubt that each computer owner may be issued a special decryption key, which is definitely special. It is extremely tough to recuperate the data without the suitable type in location.

“Don’t worry, you can return all your files!”, from text file message:

message from Noos virus

One more peculiarity of the Noos virus is that the users are not able to get access to the key. The decrypting key is hosted on an unique server under the total control by the crooks who have launched the Noos ransomware into the web. In order to acquire the key and restore the important data, the users are informed to connect with the scams by means of e-mail or by telegram and to pay the ransom in the amount of $980.

The message also says that individuals need to contact the Noos authors within 72 hours upon the minute of the information file encryption. The alert shows that by doing so individuals will obtain a 50% discount rate, therefore, the ransom amount falls to $490.

No matter what the amount of the ransom is, we highly advise that you do not pay the ransom. There is no warranty that these online crooks will keep their promises, so they might not care at all what the victims feel about the file encryption, even when the amount of the ransom is gotten into their accounts. Hence, paying ransom frequently does not lead to a successful healing. So, the users may merely lose their money for nothing.

Similarly, we urge you not to get in touch with the scams as they advise. Do not move cash into their wallets. There are no applications that could crack the Noos ransomware or bring back the data at no charge. For that reason, the only appropriate decision is to bring back the information from possible backups (if available).

Virus Summary

NameNoos Ransomware
File Extensionnoos
Short DescriptionThe 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.
SymptomsFile 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 .noos extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsKuub, Boot, Nesa
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Internet is now loaded with infections similar to the Noos ransomware. For example, this specific hazard is generally identical to Brusaf and other ransomware-type infections. These harmful utilities have actually been established in order to secure the crucial information and reveal the demand for the users to pay the ransom. All these infections utilize the similar algorithm to create the particular key for successful information decryption.

Unless the Noos ransomware is still under the advancement process or has got some concealed bugs, it is not possible to bring back the information manually. Hence, the only working solution to avoid the loss of your important data is to routinely keep updated backups of all your crucial documents.

Another crucial piece of guidance is to save the backups on special storage not connected to your primary PC. For example, you might 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 very risky, since the backup might likewise be secured by the Noos .

Leakages for the Noos ransomware attack.

Noos uses lots of paths to infiltrate the vulnerable computers. It is not particular what particular technique was used in your case, however, the invasion may occur through the following channels:

  • bundling with third-party programs, mainly free software;
  • spam emails from the unidentified senders;
  • sites providing complimentary hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Noos virus may disguise itself as some real application, for example, through the deceptive alerts requiring setup of some software application update. This is the most common trick used by the frauds to inject the Noos ransomware files into the system. In this manner users partially participate in its installation, without plainly understanding the threat.

Furthermore, the scams may send unsolicited spam e-mail with difficult signals encouraging the people to open suspicious accessories or click some download links, for example, those encouraging individuals to open certain images, text files, tax files and other information.

No doubt, opening these files or clicking the malicious links might essentially damage the system. Fake Media Player upgrade alerts may result in the Noos ransomware seepage. Similarly, downloading the cracked software application might furthermore include the ransomware installer. The last but not the least, setup of Noos might take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct permission or perhaps consent.

Avoiding the Noos attack.

Naturally, there is no absolute assurance that your computer will be always free of any malware attacks, however, we would like to share some useful tips with you to make it more secure. Ensure to pay really close attention while searching the web and particularly while getting cost-free programs. Do not open any suspicious e-mail accessories, especially if the sender is not understood to you.

Do not forget that certain freeware installer may likewise contain some other additional apps in the bundle. These additional applications may be extremely damaging. It is of utmost significance to keep your anti-virus software application and your operating system in basic to be always correctly updated.

It is quite sensible that downloading pirated software is unlawful, however, furthermore, such unauthorized programs use may also bring major damage to your computer. Hence, do not download any broken programs. Plus, the truth that your existing anti-virus did not secure the system from the Noos ransomware is a great factor for you to reevaluate your choices and change to another program that can render the safeguarding functions on a far better level.

Below please find the quotation from the Noos text file:

 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:
 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:
 Reserve e-mail address to contact us:
 Our Telegram account:

Screenshot of files with “.noos” extension added by the ransomware:”

Noos Ransomware - encrypt files with .noos extension

Use GridinSoft Anti-Malware to remove Noos ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can get GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

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.
GridinSoft Anti-Malware
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.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

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.
GridinSoft Anti-Malware Scan

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.
GridinSoft Anti-Malware Scan Result

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About Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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