Lets asume you are not the troll everyone wants you to be and you really decompiled something. SBot is clearly written in C++, there are no .NET dependencies at all ...
There is no point in hiding the entire .net-framework inside one executable, aside from the fact that its probably impossible.)
So ... if it is not the SBot you unpacked, what is it then?
May you provide some other files?
(I have a clue, but lets see

)
PS: My Harddrive gave me something:

Looks pretty simliar, definately not the exact version but still similar.
(We've all seen this source, don't we).