Abstract In this work we use the software GEANT4 release 10.6.2 to simulate the experimental setup consisting of a monoenergetic beam of electrons hitting on a molecule of COVID-19/SARS-CoV-2 with protein database identifier: 6vsb. After that we have found the kinetic energy values for the beam, such that the electrons can deposit their maximum amount of energy in the 6vsb molecule. For these kinetic energy values, we have also estimated the electric currents for the beam in vacuum. At the same time, we analysed the fraction of electrons that hit the 6vsb molecule which give us the efficiency of a thought medical treatment. With this early analysis, we aim to understand the physical properties of the coronavirus and set the basis for future analysis involving more molecules from the protein database.