How to Gather Saved Passwords

I have succesfully exploited a pc and i got the meterpreter i managed to run vnc but the problem is i can't dump sam file , or anyother option similar to it , i already got system id but i guess its because of kaspersky installed on that pc .

My main point is how can i gather all the save accounts in browsers , plus is there a way to steal an open session ? for example if he is using whatsapp web can i steal that session and use in on my pc ,