How to make file undetectable
Use binding ,this is simple binding.In this tutorial you will see how to bind two files together using WinRAR.This is useful if you are sending a file and you want it to extract and run straight away.For this tutorial I will be using a simple .exe file (command[1].exe) and game.exe file

Step 1:Get the files you want to bind.

Step 2:Highlight them both and add to archive.

Step 3:Change the name and select "Create SFX archive"

Step 4:Go to the "Advanced" tab at the top and click on "SFX options"

Step 5:In the "General" tab type in the name of the file you want to run after the extraction.

Step 6:Go to the "Modes" tab and select "Hide all"

Step 7:Go to the "Text and icon" tab and change the icon to something other than the WinRAR icon

Step 8:Click "OK" on the advanced window and "OK" in the main window and it will create the file.

Now when the user clicks on it extracts and automatically runs command[1].exe
This can be used in a variety of ways, you can experiment with the options to get different results.