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Nasoh Virus Removal Guide (+Decrypt .nasoh files)

Nasoh – General Info

Nasoh is a harmful software working as common ransomware. Michael Gillespie, the well-known malware researcher, very first found this new name in the DJVU ransomware family.

Nasoh was developed for the sole function to encrypt all popular file types. Logically, as quickly as the file encryption is effectively achieved, the users are not able to get access to them. Nasoh virus includes its own “.nasoh” to all the encrypted data. For example, the file “price_list.xls”, when crypted by Nasoh, will be entitled as “price_list.xls.nasoh”. When the file encryption is accomplished, Nasoh puts its own special text document (_readme.txt) into all the folders that save the encrypted files.

The alert specified by document requesting the random os very similar to the alerts provided by other ransomware risks coming from the DJVU family. The warning basically indicates that the files have been encrypted and the only solution to get access to it is to use an unique standalone key. Regretfully, this statement is absolutely real.

The technique to secure the files used by Nasoh is not totally researched. However, there is no doubt that each computer system owner might be provided an unique decryption key, which is definitely special. It is extremely hard to recuperate the information without the suitable type in place.

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

Don't worry, you can return all your files! virus

One more peculiarity of the Nasoh 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 complete control by the scoundrels who have released the Nasoh infection into the internet. In order to get the key and restore the important information, the users are informed to get in touch with the frauds via email or by telegram and to pay the ransom in the amount of $980.

The message likewise states that individuals need to get in touch with the Nasoh authors within 72 hours upon the moment of the information file encryption. The alert indicates that by doing so the people will obtain a 50% discount rate, therefore, the ransom amount drops down to $490.

No matter what the quantity of the ransom is, we strongly advise that you do not pay the ransom. There is no guarantee that these online scoundrels will keep their pledges, so they may not care at all what the victims feel about the encryption, even when the quantity of the ransom is gotten into their accounts. Thus, paying ransom frequently does not result in an effective healing. So, the users may merely lose their money for absolutely nothing.

Likewise, we advise you not to get in touch with the scams as they instruct. Do not transfer loan into their wallets. There are no applications that could crack the Nasoh virus or bring back the data for free. Therefore, the only proper decision is to bring back the data from possible backups (if available).

Virus Summary

NameNasoh Ransomware
File Extensionnasoh
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-556 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .nasoh extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsCoharos, Mtogas, Krusop
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Internet is now full of infections similar to the Nasoh virus. For instance, this particular hazard is essentially similar to Brusaf and other ransomware-type infections. These damaging utilities have been developed in order to encrypt the essential data and reveal the demand for the users to pay the ransom. All these infections utilize the identical algorithm to create the particular key for successful files decryption.

Unless the Nasoh ransomware is still under the development process or has got some concealed bugs, it is not possible to bring back the data manually. Hence, the only working option to avoid the loss of your essential information is to frequently keep updated backups of all your vital files.

Another important piece of advice is to store the backups on unique storage not linked to your primary device. For instance, you may keep it on the USB Flash Drive, or some external disk drive, or by using the cloud data storage services. Keeping the backups on your regular drive is extremely risky, considering that the backup might also be encrypted by the Nasoh .

Leaks for the Nasoh ransomware attack.

Nasoh uses many courses to penetrate the vulnerable computer systems. It is not specific what specific approach was utilized in your case, nevertheless, the intrusion may take place by means of the following channels:

  • bundling with third-party programs, generally freeware;
  • spam e-mails from the unidentified senders;
  • sites supplying free hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Nasoh virus might disguise itself as some real application, for example, through the deceptive notifies requiring installation of some software application update. This is the most typical trick used by the scams to inject the Nasoh infection files into the system. In this manner users partly participate in its installation, without plainly understanding the risk.

Moreover, the frauds might send unsolicited spam email with tricky alerts motivating individuals to open suspicious attachments or click on some download links, for instance, those encouraging the people to open particular photos, text files, tax documents and other info.

No doubt, opening these files or clicking on the malicious links might basically harm the system. Fake Adobe Flash Player upgrade notices may result in the Nasoh ransomware seepage. Likewise, downloading the cracked software application might additionally include the ransomware installer. The last however not the least, installation of Nasoh might happen through some Trojan horses that might be installed stealthily into the system and without the user’s direct consent or even authorization.

Preventing the Nasoh ransom virus attack.

Naturally, there is no absolute assurance that your computer system will be always devoid of any malware attacks, however, we wish to share some beneficial suggestions with you to make it much safer. Make certain to pay extremely attention while browsing the web and especially while getting cost-free programs. Do not open any suspicious email accessories, especially if the sender is not understood to you.

Do not forget that specific freeware installer may likewise include some other extra apps in the bundle. These extra applications might be very destructive. It is of utmost significance to keep your anti-virus software application and your operating system in basic to be always properly updated.

It is rather sensible that downloading cracked apps is illegal, nevertheless, additionally, such unapproved software application use might likewise bring major 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 Nasoh ransomware is an excellent factor for you to reassess your choices and change to another program that can render the protecting functions on a much better level.

Below please find the quotation from the Nasoh 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 “.nasoh” extension added by the ransomware:”

Nasoh Ransomware - encrypt files with .nasoh extension

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

1.Download GridinSoft Anti-Malware.

You can download 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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