Module/Signatures to detect few RAT and Trojan families

Module > Signatures to detect few RATs and Trojan families:

* Beebus
* Fynloski
* PcClient
* PlugX
* Poison Ivy
* Spynet
* XtremeRat
* Yahih
* Malware touches Windows host file
* Malware dropping executables similar to Windows legitimate file-names