XOR Ransomware

This is a proof of concept ransomware that uses the XOR cipher to encrypt user files. It affects non-system files under the user desktop's directory. This behaviour can be easily changed by replacing RELATIVE_FOLDER's value in main.c.

Once you run the program it will first check if the files under the given directory are encrypted or not. If they are already encrypted it will decrypt them.

Usage

gcc main.c -o main
./main.exe

In case you want to have it on a usb stick to auto-run it but want to avoid running it on your own computer, add an environment variable with the following parameters:

Key: FUN_xor_encryption

Value: FUN

Please note, this repo is for educational purposes only. No contributors, major or minor, are to fault for any actions done by this program.