csrss.exe is a program which is most likely NOT a virus. So, if csrss.exe is on your PC, it is most likely ok, and will NOT be a cause for concern. Even if your PC is virus-free, it is still recommended to run a good antivirus with a good detection rate, in order to yourself your PC against potential security problems.
The default name and folder where the program is stored is
C:\Windows\System32\csrss.exe.
The MD5 checksum for this program is 955e9227aa30a08b7465c109b863b886.
This application does NOT run as a Windows service. This is usually a good sign.
csrss.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.
64-bit code has been detected. This exe can exploit the full power of a modern PC processor.
csrss.exe appears to have visible windows. This is good because it doesn't operate in some kind of stealth mode. Its activity is clearly displayed to you.
csrss.exe has a digital signature. Today the large majority of clean software applications are digitally signed.
The digital signature extracted from csrss.exe checks out perfectly. This is excellent.
Digital certificate name: Microsoft Windows Publisher
Certificate's issuer name: Microsoft Windows Production PCA 2011
This executable does NOT have a removal routine stored in registry.