I can't recommend any site that contains "how to" instructions for bad guys . . . . . .

From MAB's site:

IRC Self-Propagating Script

In this tutorial I will try to teach you how to make your own mIRC worm in IRC. This is the basic formula, so you can later add/delete functions to obtain better results in your eyes. This tutorial is ofcourse for educational use only, to explore how mIRC script works and how you can protect yourself against these threats. The author, Mohammad Ahmadi Bidakhvidi, does not take any responsibility for the damages one can cause using this script. If you do not agree with these terms I suggest you stop reading this tutorial.
Tutorial mIRC Self-Propagating Script

First of all I need to notice you that this worm is backdoored. This means that people that are infected by this worm can be controlled by you. Once infected with the worm they are also infected with the Trojan. Using the Trojan you can control the victim’s PC.

Get Started

It all starts with the next command:. . . . . . . .

Sorry, I just disagree with sites like this.

PP