Troj_Dropper.LCZ is a Trojan that may be downloaded from remote sites by other malware. It may be dropped by other malware. It may be downloaded unknowingly by a user when visiting malicious Web sites.

It drops files/components. Trend Micro detects the said file as TSPY_ONLINEG.AKY. It then executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

Technical details can be found at this Trend Micro page.