wininit.exe is a program which is most likely NOT a virus. So, if wininit.exe is on your PC, it is most likely ok, and will NOT cause problems. Even if your system is virus-free, it is still recommended to run a good antivirus with a good track record, in order to yourself your system against viruses and malware.
This program is usually stored on disk in C:\Windows\System32\wininit.exe.
The MD5 fingerprint for this program is 583b60a43f502d90331e6589e1dbc6dd.
This program does NOT run as a Windows service. This is normally a good sign.
wininit.exe appears to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This is a 64-bit executable. It uses the full capacity of modern computer processors.
wininit.exe is digitally signed. Nowadays most serious programs are digitally signed.
The digital signature attached to wininit.exe verifies as ok. This is very good.
Digital certificate name: Microsoft Windows Publisher
Certificate's issuer name: Microsoft Windows Production PCA 2011
This application does NOT have an uninstall routine set up in registry.