At least eight Eastern Europe banks where targeted, these attacks tracked collectively as DarkVishnya. Cybercriminals enter into the organization Pretending as a courier, job seeker, etc and leave connecting devices such as a laptop, Raspberry Pi and Bash Bunny (multi-function USB attack tool) into the corporate network. The method has the potential for use against any big companies, Kaspersky said. Researchers Categorized the Attack into Three Stages First Stage Attackers remotely connected to the device and scan the local network to gain access to web servers and other sources, sniff data, and harvest sensitive information.”]
Source: https://gbhackers.com/hackers-target-corporate-network/