malware leveraging 3rd party services

Use cases:
 For proxying
 For establishing a primary C&C channel  As a primary C&C channel
 As a backup C&C channel
 As an exfiltration channel

Backdoor.Makados - Google Docs
APT17 - Microsoft TechNet
Operation Poisoned Hurricane - 	Google Code
Shadows in the Cloud - Twitter, Google Groups, Blogspot, Baidu Blogs, blog.com
GeminiDuke - Twitter
Trojan.Whitewell - Facebook
Trojan-downloader f0xy - VKontakte
Inception/CloudAtlas - CloudMe
CloudDuke - Microsoft OneDrive
IcoScript - Yahoo Mail
APT1: GLOOXMAIL, MACROMAIL & CALENDAR - Google Talk, MSN Messenger & Google Calendar
BlackEnergy - Google+ module

Android.Cajino - Baidu Cloud Push
Android.Trojan-SMS.AndroidOS.FakeInst.a - Google Cloud Messaging
Android.Trojan-SMS.AndroidOS.Agent.ao - Google Cloud Messaging
Android.Trojan-SMS.AndroidOS.Agent.az - Google Cloud Messaging
Android.Trojan-SMS.AndroidOS.OpFake.a - Google Cloud Messaging
Android.Backdoor.AndroidOS.Maxit.a - Google Cloud Messaging

Cozy(Hammer)Duke - Twitter (Microsoft OneDrive for exfil)
OSX.Flashback - Twitter
Downloader.Sninfs- Tumblr