According to google, CSRSS.exe could either be a Trojan, or an important part of Windows.
This process should be treated as suspicious if there are two instances running. Always take note of the process location when trying to determine whether or not the process is genuine or malicious.This Windows component should be located in your Windows System directory ie: something similar to C:\Windows\System32\csrss.exe
I have 2 instances that seem to be running, but both point to the same file in C:\Windows\System32
Should I be worried?
My anti-virus doesn't complain... (panda cloud)