Icom's radio communications protocol NEVER sends the password already in the radio back to the connected computer. I don't believe that anybody has ever seen that happen because there is no reason to allow the password to be revealed to the PC. Except, of course, for factory authorized service personnel to recover a radio that has a lost password. In that case my suspicion is that they tag into the EEPROM, dump its contents, and read the password directly.
If you knew what locations it was stored in, you might be able to read it out.
To try to find it, you could program in a distinctive known password, dump the EEPROM, and go searching for that particular password's pattern. After a few iterations you might be able to nail it every single time.