Banking malware, including Trojans which steal your online credentials and screen grabbers, usually place heavy emphasis on remaining undetected for as long a period of time as possible.
TrickBot, Emotet, BackSwap and the experimental MysteryBot are only a handful of the countless forms that banking malware can take.
The majority of these malware variants will deploy on victim machines in order to gather information and steal credentials, of which will then be sent to a command-and-control (C&C) server controlled by threat actors.