Have you ever wondered about having an EXE without any entry in IAT (Import Address Table) at all? Well, I knew that it's possible, but never saw an actual exe file without IAT entry. So I developed an application which is 1,536 bytes and still does basic annoying malware things.
more here..............http://www.codeandsec.com/PoC-Tiny-Malware-Without-IAT-DATA-Or-Resource-Section
more here..............http://www.codeandsec.com/PoC-Tiny-Malware-Without-IAT-DATA-Or-Resource-Section