Nasoh Virus - How to remove

Nasoh infection perfectly fits the description of a ransomware virus because it enters computer systems illegally, encrypts all personal files stored on the hard drive and then demands a ransom to be paid in order to provide working decryption key that could unlock those files.

Usually, people get really scared when a virus like this one occurs on their computers. It seems like there is no other way to get out of this troubling situation than pay a ransom. But actually, there is. You can eliminate this virus from your computer and then restore your locked files from a backup or use some sort of file restoring software to do that for you.

So if your computer is currently infected with Nasoh ransomware or you just want to learn more about this malware and its’ distribution methods, please keep reading this article. If you have any particular questions about this virus, you can ask us in the comments section below and we will do our best to answer them all.

Why Nasoh is So Dangerous

So you already know that Nasoh is classified as ransomware and there are plenty of those viruses like this one – Carote, Cetori, or Stare. However, this infection originates from an infamous family of ransomware infections called DJVU. All those ransomware infections share the same deadly feature – they use some strong cryptography algorithm to change the structure of your personal files stored on the hard drive. Unfortunately, you won’t be able to use them after this happens. Eventually, you will be asked to pay a ransom in order to receive a special decryption key that should allow you to reverse that encryption process and get your files back.

It’s usual for ransomware viruses to use a specific extension to mark encrypted files and in this particular case it’s “.nasoh”. So if you had a file named “file.txt”, after the encryption it will be renamed to “file.txt.nasoh”. Also, after the encryption, you will notice a new file named “_readme.txt” placed on your desktop. It’s a ransom note and it goes like this:

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:
hxxps://we.tl/t-dIIHZji8hl
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 protected]

Reserve e-mail address to contact us:
[email protected]

Your personal ID:
–

Those crooks behind Nasoh Virus want you to contact them via email [email protected] or [email protected] to receive further instructions. However, we already know that you are required to pay $980 (or $490 if you pay within the first 72 hours). We do not recommend to either pay the ransom or contact them via email. Instead of that, you should immediately remove the virus from your computer and restore your locked files. This will be easier, cheaper and much safer.

How to Eliminate Nasoh Infection

To effectively eliminate Nasoh virus you need to scan your system with Spyhunter. Either one of those tools will immediately detect and remove Nasoh itself and other malicious files that are currently operating on your computer.

Sadly, it’s not enough to get your locked files back. To do that you will have to perform a system restore. This will return your computer to a previous date (before it was infected). If this doesn’t work, please follow instructions provided below this article.

Important -- edit the hosts file to unblock security websites

TL DR : The hosts file is edited to block security sites Before the virus can be removed, it's necessary to fix the hosts file (the file which controls which addresses connect to which IPs). That is the reason the majority of security websites is inaccessible when infected with this particular parasite. This infection edits this file to stop certain websites, including anti-malware download sites, from being accessed from the infected computer, making browsers return the "This site can't be reached" error. Luckily, it's trivial to fix the file and remove the edits that were made to it.

Find and edit the hosts file

The hosts file can be found on C:/Windows/System32/Drivers/etc/hosts. If you don't see it, change the settings to see hidden files.

1. In the Start Menu, search for Control Panel.
2. In the Control Panel, find Appearance and Personalization.
3. Select Folder Options.
4. Open the View tab.
5. Open Advanced settings.
6. Select "Show hidden files...".
7. Select OK.

Open this file with administrator privileges.

1. Open the Start Menu and enter "notepad".
2. When Notepad shows up in the result, right-click on it.
3. In the menu, choose "Run as administrator"
4. File->Open and browse for the hosts file.

The hosts file should look like this: Delete additional lines that they connect various domain names to the wrong IP address. Save the file.

Download and run the antivirus program

After that, download antivirus programs and use them to remove the ransomware, the trojan, and other malware. Spyhunter (https://www.2-viruses.com/reviews/spyhunter/dwnld/).

Automatic Malware removal tools

How to recover Nasoh Virus encrypted files and remove the virus

Step 1. Restore system into last known good state using system restore

1. Reboot your computer to Safe Mode with Command Prompt:

for Windows 7 / Vista/ XP

• Start → Shutdown → Restart → OK.
• Press F8 key repeatedly until Advanced Boot Options window appears.
• Choose Safe Mode with Command Prompt.

for Windows 8 / 10

• Press Power at Windows login screen. Then press and hold Shift key and click Restart.
• Choose Troubleshoot → Advanced Options → Startup Settings and click Restart.
• When it loads, select Enable Safe Mode with Command Prompt from the list of Startup Settings.

 

2.Restore System files and settings.

• When Command Prompt mode loads, enter cd restore and press Enter.
• Then enter rstrui.exe and press Enter again.
• Click “Next” in the windows that appeared.
• Select one of the Restore Points that are available before Nasoh Virus has infiltrated to your system and then click “Next”.
• To start System restore click “Yes”.

 

Step 2. Complete removal of Nasoh Virus

After restoring your system, it is recommended to scan your computer with an anti-malware program, like Spyhunter and remove all malicious files related to Nasoh Virus. You can check other tools here.  

Step 3. Restore Nasoh Virus affected files using Shadow Volume Copies

If you do not use System Restore option on your operating system, there is a chance to use shadow copy snapshots. They store copies of your files that point of time when the system restore snapshot was created. Usually Nasoh Virus tries to delete all possible Shadow Volume Copies, so this methods may not work on all computers. However, it may fail to do so. Shadow Volume Copies are only available with Windows XP Service Pack 2, Windows Vista, Windows 7, and Windows 8. There are two ways to retrieve your files via Shadow Volume Copy. You can do it using native Windows Previous Versions or via Shadow Explorer. a) Native Windows Previous Versions Right-click on an encrypted file and select Properties → Previous versions tab. Now you will see all available copies of that particular file and the time when it was stored in a Shadow Volume Copy. Choose the version of the file you want to retrieve and click Copy if you want to save it to some directory of your own, or Restore if you want to replace existing, encrypted file. If you want to see the content of file first, just click Open.

b) Shadow Explorer It is a program that can be found online for free. You can download either a full or a portable version of Shadow Explorer. Open the program. On the left top corner select the drive where the file you are looking for is a stored. You will see all folders on that drive. To retrieve a whole folder, right-click on it and select “Export”. Then choose where you want it to be stored.

Step 4. Use Data Recovery programs to recover Nasoh Virus encrypted files

There are several data recovery programs that might recover encrypted files as well. This does not work in all cases but you can try this:

• We suggest using another PC and connect the infected hard drive as slave. It is still possible to do this on infected PC though.
• Download a data recovery program.
• Install and scan for recently deleted files.

Note: In many cases it is impossible to restore data files affected by modern ransomware. Thus I recommend using decent cloud backup software as precaution. We recommend checking out Carbonite, BackBlaze, CrashPlan or Mozy Home.