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Remove Nasoh ransomware (Removal Instructions) - Recovery Instructions Included

removal by Julie Splinters - - | Type: Ransomware

Nasoh ransomware is malware that enters host computers to encrypt all personal files

Nasoh ransomware

Nasoh ransomware is a cyberthreat that users can get infected with after opening a malicious spam email attachment, getting tricked by a fake update, using cracks/keygens or other ways. Soon after the installation, the malicious software engages in heavy Windows system modification to enable its full potential.

After that, Nasoh ransomware begins the file encryption process with the help of AES or another sophisticated cipher and appends .nasoh extension to every picture, video, music, document, etc. For that point, victims are unable to open and use any data on their PCs. Cybercriminals behind the malware want to make it clear to users of what happened, so a ransom note _readme.txt is dropped into every single affected folder where the locked files are located.

Hackers explain to users that all personal files on their computers have been locked, and the only way to retrieve them is by paying Nasoh virus developers $980/$490 in Bitcoin. Crooks also leave contact information – gorentos@bitmessage.ch, gorentos2@bitmessage.ch – these emails have been unchanged for the past few versions (Nacro, Krusop, Mogranos, and others) of the STOP/Djvu ransomware family.

Name Nasoh
Type Rasnomware
Infection Spam email attachments or links, fake updates, software cracks, web injects, exploits, etc.
Symptoms Files appended with an extension and unusable, a ransom note displayed which asks to pay a particular sum of money
File extension .nasoh
Ransom note _readme.txt
Contact gorentos@bitmessage.ch, gorentos2@bitmessage.ch, @datarestore (Telegram)
Termination Use anti-malware such as Reimage Reimage Cleaner or SpyHunter 5Combo Cleaner
File recovery STOPDecrypter [download link] might be able to retrieve some of the files.

Note that Nasoh ransomware might be capable of bringing secondary payloads into the infected machine. In the past, some STOP variants like Promorad or Kroput were noticed to drop a banking trojan AZORult. Therefore, Nasoh ransomware removal is vital to ensure that no other threats are also present on your device.

As soon as the virus locks all files, it drops the following ransom note for victims. Looking at the message, it seems that crooks are trying to encourage Nasoh ransomware victims to pay the ransom in Bitcoin as soon as possible – they even offer a 50% discount:

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:
gorentos@bitmessage.ch

Reserve e-mail address to contact us:
gorentos2@firemail.cc

While there is no universal Nasoh ransomware decryption tool that would work for every victim, recovering data without having backups or paying criminals is still possible. STOPDecrypter is a specially-crafted software by independent security researcher Michael Gillespie that allows victims to recover files for free if:

  • Nasoh did not manage to contact its Command & Control server – the malware then encrypts data using a hard-coded key;
  • The host computer was not connected to the internet during file encryption process.

Nasoh ransomware virus
Nasoh ransomware is a file locking virus that modifies Windows registry and other parts of the OS in order to perform its functions

However, in most of the cases, the malware manages to perform the encryption as intended and also deletes Shadow Volume Copies,[1] preventing easy recovery. In such a case, restoring data becomes a difficult task, although third-party recovery solutions might help some users. Nevertheless, before proceeding to use these tools, users should first remove Nasoh ransomware from their computers in order to prevent the reoccuring encryption.

To get rid of Nasoh ransomware, you will have to employ an anti-malware tool. We recommend using Reimage Reimage Cleaner or SpyHunter 5Combo Cleaner, although you can choose another software, as long is it is reputable (do not download cracked versions of security applications – they might be infested with malware!).

Do not download software cracks and be wary of email attachments

There are multiple ways of how ransomware can enter the machine. In most of the cases, hackers try to infect as many users as possible – these infections are mostly random. Nevertheless, some malware samples are known to first check for the keyboard layout before proceeding. Most of the time the ex-Soviet and Russian-speaking languages are excluded (for example, Sigrun), although the same principle is used to perform targeted attacks. If the virus detects the predetermined list of the keyboard layouts, it exists without causing any harm. Nevertheless, those who do get affected might suffer significant losses.

The most common ransomware infection methods include exploits, spam email, fake updates, software cracks, hacked sites, repacked installers, etc. Security experts[2] recommend following these simple security guidelines to avoid the devastating consequences of ransomware infection:

  • Pick reputable sources for your downloads – even when it comes to free software;
  • Do not download pirated software or cracks/keygens;[3]
  • Before opening any type of questionable executable, check it with anti-malware software or tools like Virus Total;
  • Patch your operating system and the installed software with security updates;
  • Enable ad-blocking application or extension;
  • Turn off Adobe Flash auto-run feature;
  • Only download software updates from official sites and never trust random pop-ups claiming your software is outdated;
  • Use strong passwords for all your accounts and never reuse them;
  • Backup your files regularly!

Get rid of Nasoh ransomware and only then proceed with file recovery

Nasoh virus might modify Windows hosts file to prevent users from visit predetermined sites that relate to computer security as well as websites that host links to anti-malware tools downloads. In such a case, performing Nasoh ransomware removal is only possible by accessing Safe Mode with Networking – a secure environment where the operation of malware would be temporarily disabled. Then, perform a full system scan using anti-malware software like Reimage Reimage Cleaner or another tool.

Nasoh ransomware encrypted files
As soon as Nasoh ransomware infects the machine, it performs file encryption process that prevents users from accessing them

Once you remove Nasoh ransomware, you can retrieve your data via backups, try out STOPDecrypter or make use of third-party recovery software. Please find all the detailed instructions on how to perform all these steps below.

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What to do if failed?
If you failed to remove virus damage using Reimage Reimage Cleaner, submit a question to our support team and provide as much details as possible.
Reimage Reimage Cleaner has a free limited scanner. Reimage Reimage Cleaner offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage Cleaner, try running Combo Cleaner.

To remove Nasoh virus, follow these steps:

Remove Nasoh using Safe Mode with Networking

If Nasoh ransomware is interfering with your security application, you should enter Safe Mode with Networking to perform its termination without interruptions:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Nasoh

    Log in to your infected account and start the browser. Download Reimage Reimage Cleaner or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Nasoh removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Nasoh using System Restore

If you can't access Safe Mode for some reason, you can also use System Restore to get rid of the infection:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Nasoh. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage Reimage Cleaner and make sure that Nasoh removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Nasoh from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Nasoh, you can use several methods to restore them:

Data Recovery Pro might be a useful tool when trying to recover ransomware-locked data

Data Recovery Pro might be capable of helping you restoring at least some portion of your files.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Nasoh ransomware;
  • Restore them.

Windows Previous Versions method

This feature allows you to restore a file to its previous state if you had System Restore enabled. However, you can only retrieve one file at the time, so recovery of a large amount of data might not be possible.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

In some cases, ShadowExplorer will be your savior

If Nasoh file virus failed to delete Shadow Volume Copies, ShadowExplorer should be able to recover all your files.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Make use of STOPDecrypter

Download and employ STOPDecrypter [download link] – it might be able to retrieve your data in some cases.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Nasoh and other ransomwares, use a reputable anti-spyware, such as Reimage Reimage Cleaner , SpyHunter 5Combo Cleaner or Malwarebytes

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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