How to remove Thunder Ransomware and decrypt .[thunderhelp@airmail.cc].thunder files

What is Thunder Ransomware?

Thunder Ransomware is a type of malware aimed at encrypting user data. Cybercriminals mainly spread Thunder via spam emails under the guise of payment documents like bank accounts, taxes and so on. Following infiltration, it immediately starts to encode users’ files. The encryption process goes unnoticed and once it is finished, all user files become inaccessible. To get back your files, you are forced to pay $100 in bitcoins. Actually, if you have been attacked by Thunder Ransomware, there is no need to contact them and especially to make any concessions. Remember, you are up against fraudsters who don’t care about your files and whose the main purpose is to make a profit. Hence, there is a high risk of being left without decryptor and money. Instead, you may try using this guide to remove Thunder Ransomware and decrypt .[thunderhelp@airmail.cc].thunder files without spending any money.

Thunder ransomware

The principle of work of the ransomware is always the same – to encrypt files and then to require payment. Thunder Ransomware encodes users’ personal files via AES encryption algorithm. It is easy to recognize by “.[thunderhelp@airmail.cc].thunder” extension which is added to each affected file. For example, file “myfamily.jpg” will turn into “myfamily.[thunderhelp@airmail.cc].thunder”. After this, ransomware creates !=How_recovery_files=!.txt file, where the user may find the demands of criminals to decrypt encrypted files:


‘Hello, dear friend!
1. [ ALL YOUR FILES HAVE BEEN ENCRYPTED! ]
Your files are NOT damaged! Your files are modified only. This modification is reversible. The only 1 way to decrypt your files is to receive the decryption program.
2. [ HOW TO RECOVERY FILES? ]
To receive the decryption program write on our e-mail: thunderhelp@airmail.cc
And in subject write your ID: ID-[redacted 6 hex]
We send you full instruction how to decrypt all your files.
3. [ FREE DECRYPTION! ]
Free decryption as guarantee. We guarantee the receipt of the decryption program after payment. To believe, you can give us up to 3 files that we decrypt for free. Files should not be important to you! (databases, backups, large excel sheets, etc.)’

Although Thunder is a really dangerous virus, you still have a good chance to get them back. Before deciphering, you should first stay focused on removing Thunder Ransomware to avoid re-infection. Once Thunder Ransomware is removed, you can proceed with decryption. Both automatic and manual solution is presented here that we hope will help you remove Thunder Ransomware and recover your files.

How Thunder ransomware gets on your PC?

This type of virus can be infiltrated through several methods, including a freeware software, spam messages, trojans, software from dangerous sources, etc. A process of installation can start hidden and automatically. Besides that, some malware programs can mark Thunder Ransomware as a trusted software program.

How to remove Thunder ransomware?

To make sure that the ransomware won’t reappear, you need to delete Thunder ransomware completely. For this, you need to remove the files and registry entries of the ransomware. We should warn you that performing some of the steps may require above-average skills, so if you don’t feel experienced enough, you may apply to the automatic removal tool.

Download Norton

Performing an antimalware scan with Norton would automatically search out and delete all elements related to Thunder ransomware. It is not only the easiest way to eliminate Thunder ransomware but also the safest and the most assuring one.

How to decrypt .[thunderhelp@airmail.cc].thunder files

Restore files with Stellar Data Recovery

Stellar Data Recovery is an essential tool in the fight against ransomware-type viruses that can recover encrypted files.

stellar data recovery tool

  1. Download Stellar Data Recovery and launch it
  2. Select the drive you want to recover and click START SCAN
  3. After scanning is finished, you are presented with a list of recoverable files found.
  4. Select the required files and click the Recover
Download Stellar Data Recovery

Decrypt files using our decryption service

You may try using our own service for decrypting files compromised by ransomware-type viruses. The analysis of data takes 3-5 days, after which, we will let you know whether it’s decryptable or not. Note: the service is paid, payment is charged only for decryption, the analysis is free. In order to use our service, you should fill out the form listed below.

Also, please add a log file, created on your PC:

  1. Click “Start” and type: “cmd.exe” in the search box
  2. Right-click “cmd.exe” and select “Run as administrator
  3. In command line, type or copy/paste following: dir C:\ /a/s > “%userprofile%\dirc.log”
  4. Find and attach the created “%userprofile%\dirc.log” file to the web form

Please attach encrypted text files according to the following conditions:

  1. number of files should not exceed 4;
  2. file size is not more than 8 megabytes;
  3. files must be from different folders;
  4. files must be unique.

Restore the system

  1. Initiate the search for system restore
  2. Click on the result
  3. Choose the date before the infection appearance
  4. Follow the on-screen instructions

Roll the files back to the previous version

  1. Right-click the file and choose Properties
  2. Open the Previous Version tab
  3. Select the latest version and click Copy
  4. Click Restore

If the above-mentioned methods didn’t help in eliminating the threat, then it’s better to rely on an automatic way of deleting Thunder Ransomware.

How to prevent ransomware infection

To prevent infection with ransomware-type viruses, you should have proper antimalware software. This method is convenient because it allows you to detect a virus before it penetrates, and therefore to avoid infection and the loss of all your data. It is capable of protecting not only home computers but also server systems in large organizations. Download antimalware program to secure your system and privacy.
Download Norton





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