Nepenthes: Malware Collection Tool

Very similar to MWCollect, there's another way to collect automatically spreading malware using Nepenthes. Described on the project's website, "Nepenthes is a versatile tool to collect malware. It acts passively by emulating known vulnerabilities and downloading malware trying to exploit these vulnerabilities." If you're looking to capture bots, worms, and other malware, this looks like a very useful tool.

MWCollect and Nepenthes are very similar to eachother n how they work, and if you can't spare the space or the hassel of steting up and maintaining a real Windows box as a honeypot, this may help you achieve your collection goals.