execute command in go without storing the command in a .exe file

execute command in go without storing the command in a .exe file

I am trying to do a go program to execute a .exe file, but without be actually a .exe file. The idea is to read the executable from a .txt file and decode it (it is in base64). Once I hava that code stored in a variale, I want to execute it directecly, without having to write it in disk.

In this line why do you decode and store the code in the variable decodedDataBytes:

decodedDataBytes, err := base64.StdEncoding.DecodeString(decodedData)

Then I write it in a temp file and execute it like this:

tempFilePath := "temp.exe"
    err = ioutil.WriteFile(tempFilePath, decodedDataBytes, 0644)
    if err != nil {
        log.Fatal(err)
    }

    cmd := exec.Command("D:\temp.exe") 
    cmd.Stdout = os.Stdout
    cmd.Stderr = os.Stderr

This works just fine, but I need to do it without storing the code in the file temp.exe.

How can I do this??

I am using go, but if this can be done with other language, I accept ideas too.