DeepEnd Research which specializes in threat research and intelligence analysis has published a list of malware traffic patterns that features all types of malware: cybercrime, APT and hacktivism! Although the list is not meant to be the only way to identify malware families - it is an aid resource and reference.
Download the Malware Traffic Pattern spreadsheet from here - http://www.deependresearch.org/2013/04/library-of-malware-traffic-patterns.html