csrss.exe is a application which is probably legit. So, if csrss.exe is on your computer, it is probably ok, and will NOT be a cause for concern. Even if your system is virus-free, we still advise you to purchase a good antivirus with a good track record, in order to defend your PC against threats.
Usually, the default name and directory where this program is stored is
The MD5 fingerprint for this program is 77dbc745d957b4f0404ababc10696784.
This application does NOT operate as a Windows service. This is usually a good sign.
csrss.exe seems to use the functions of Windows SFC (System File Checker) or Windows File Protection.
64-bit code has been detected. This application can use the full power of a current PC processor.
csrss.exe is digitally signed. Today most serious programs are digitally signed.
The digital signature attached to csrss.exe verifies as ok. This is most likely a clean, ok program.
Digital certificate name: Microsoft Windows Publisher
Certificate's issuer name: Microsoft Windows Production PCA 2011
This executable does NOT have an uninstall routine set up in registry.