Use Wireshark or TCPView to see if the file communicates with external IPs. C2 (command-and-control) domains often use non-standard ports.
Refers to the software version, in this case, version 1.81 . E-STUDIO-CSW2401-1-Ver1-81-WW.exe
This specific executable typically contains the or PCL (Printer Command Language) drivers. Toshiba e-STUDIO devices are sophisticated; they do not merely put toner on paper. They manage stapling, hole-punching, dual-sided printing, and secure PIN printing. The driver acts as the user interface for these features. Use Wireshark or TCPView to see if the
Thus, E-STUDIO-CSW2401-1-Ver1-81-WW.exe fits a known pattern of social engineering. in this case