I can't remember... extracting Wc3's default icons

I've looked around using the search feature, but my searches have failed. I'm probably using the wrong key words.

As the topic goes: How do I extract the default icons from WC3? I know it's possible, and I've seen it done a couple years ago, but I can't remember for the life of me where I saw how to do it and what tools I would need to do so. If anyone knows right off the bat, please redirect me with a link.

Thanks in advance!

I use War3 Model Editor. It has an MPQ viewer and the ability to extract anything from them.

Alternatively, Wc3Viewer should be in this site's Resources section.