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Decoder ransomware virus. How to remove? (Uninstall guide)

removal by Ugnius Kiguolis - - | Type: Ransomware
12

Decoder continues nasty job of the GlobeImposter ransomware virus

Ransom note by Decoder malware

Decoder ransomware is a file encrypting virus that belongs to Globe Imposter ransomware family. Malware uses a strong encryption algorithm and appends the .decoder file extension to a bunch of different files. Following the encryption, it delivers a ransom demanding message in the Instructions.txt file.

The ransom note delivered by the Decoder virus starts with victim’s personal ID number and informs that files on the computer were encrypted due to “security problems” with the computer. In order to solve the issue and get back access to their records, victims are asked to send an email to decoder@keemail.me or decoder@expressmail.dk.

However, from the ransom note is clear that victims will need to pay some Bitcoins in order to get the decryption key. Though, authors of the Decoder do not reveal the size of the ransom. Thus, the payment might be set based on the number of encrypted files.

Crooks want to give guarantees that they can actually decrypt files and let people send one file for the decryption. However, the test file cannot include important information. We want to warn that this might be the only file that you recover with the help of criminals after the Decoder malware attack.

Security experts warn that this malicious program has been created for swindling the money from computer users illegally. Therefore, authors of the malware are only interested in getting your money, and data recovery is the matter of their conscience. For this reason, you should focus on Decoder removal.

It’s important to get rid of the virus because its appearance not only damages your files but makes the system vulnerable. The virus can inject malicious code into legit system processes, create or modify new Windows registry keys or install other dangerous programs. Thus, after the ransomware attack is impossible to use the affected PC safely and normally.

Crypto-virus is a dangerous and complicated cyber threat. Thus, it’s recommended to remove Decoder using reputable anti-virus or anti-malware program, such as Reimage.

Malware is most likely to sneak into the system via malicious spam emails

Even though there are numerous ways how ransomware might end up on your computer, the biggest chances are that malicious payload is dropped on the system when you open an infected email attachment. It might be safe looking PDF or Word file that pretends to be an invoice, statement or another important document. Thus, you have always to double-check the information about the sender, look up for grammar mistakes or other suspicious signs[1] to check if hackers did not send this email.

Additionally, the ransomware-type virus might spread via:

  • malicious ads;[2]
  • exploit kits;
  • fake software updates;
  • bogus software downloads;
  • illegal content.

Security experts from the Germany[3] remind to be careful when browsing the web and opening spam emails. Users are also advised to create and update backups and install security software to minimize the risk of the attack.

Removal of the Decoder ransomware virus

First of all, we want to discourage you from manual Decoder removal. It’s a complex program that might be hard or nearly impossible to remove safely. If you try to locate and delete malicious files, you might accidentally terminate legit entries because ransomware often hides under system file names.

Therefore, you should avoid causing more damage to your computer by choosing reputable security software to remove Decoder ransomware from the computer. We recommend using Reimage or Malwarebytes Anti Malware, but you can choose your preferred tool as well. If you cannot run security software, follow the steps below.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Decoder ransomware virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
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Manual Decoder virus Removal Guide:

Remove Decoder using Safe Mode with Networking

Folow these steps to run automatic Decoder ransomware removal:

  • 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 Decoder

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

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

Remove Decoder using System Restore

  • 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 Decoder. 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 and make sure that Decoder removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Decoder 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 Decoder, you can use several methods to restore them:

Data Recovery Pro might help after the ransomware attack

This tool might help to restore files after system wreckage or corrupted data. However, it might also help after the ransomware attack.

Try Windows Previous versions feature

If System Restore has been enabled before ransomware attack, you can follow these steps and recover individual versions of important data:

  • 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”.

Take advantage of the ShadowExplorer

ShadowExplorer can restore files from Shadow Volume Copies. Hence, if Decoder did not delete them, follow these steps:

  • 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.

Try Globe Imposter decryptor

Decoder ransomware virus is a variant of GlobeImposter which is decryptable. Thus, you can try to use its decryptor too.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Decoder and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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References