How to build your own ransomware

Download

Download the latest build from https://github.com/kaixinol/Ransomware-Maker.cs/releases, note that it requires .NET 6.0 runtime environment.

Features

• Reduce program size: as the name suggests, it reduces the size of the compiled program.
• Anti ransom trap: This feature does this by ignoring specific entropy values of certain ransom trap files.
• Anti sandbox: This breaks out of sandbox emulation by calling a custom hibernation function.
• Self-signed certificate: Reduce antivirus engine detection rate by signing invalid certificates (requires internet connection).
• UPX compression: Call UPX to reduce the size of the generated program after compilation (can't compress C# program)

Mode

C#

Features: No need to download additional compilers, as long as your OS version is greater than or equal to Win 7, you can call the system's native C# compiler .NET version ≥3.5 installed on your system is required to run it, and it does not support being compressed by upx.

C++

Features: Need to download extra compiler, no additional requirements at runtime, supports compression by upx.

Gist

• C++
• C#