"Blackhole has been the major player in the exploit kit market for a while now, but the Sweet Orange and ProPack kits have recently entered the market and are rapidly gaining in popularity. Aditya Sood and colleagues take a look at advancements in the design of the new kits on the block."
Refer: http://www.virusbtn.com/virusbulletin/archive/2013/03/vb201303-SweetOrange-ProPack
Enjoy !
