Hello,
Check this Article:
DRIDEX and how to overcome it.
https://www-secure.symantec.com/connect/blogs/dridex-and-how-overcome-it
DRIDEX is an online banking malware that steals personal information through HTML injections. This mainly targets customers of financial/banking institutions based in Europe. First spotted around November 2014, DRIDEX is considered to be the direct successor of online banking malware CRIDEX; it features new malicious routines as well as techniques to avoid detection.
Symantec classification for Cridex:
W32.Cridex
http://www.symantec.com/security_response/writeup.jsp?docid=2012-012103-0840-99
W32.Cridex is a worm that spreads by copying itself to mapped and removable drives. It also opens a back door and downloads potentially malicious files on to the compromised computer.
Trojan.Cridex
http://www.symantec.com/security_response/writeup.jsp?docid=2015-012314-0117-99
Trojan.Cridex is a Trojan horse that may add the compromised computer to a botnet and steal information.
Other Dridex samples are caught as Trojan Horse, Trojan.Gen and other more generic names. There is also coverage in place for 64-bit versions, heuristic signatures against Cridex, IPS, etc. Those are quite effective.
Hope that helps!!