winstore.app.exe is a program which is most likely NOT a virus. So, if winstore.app.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your PC is clean, it is still recommended to use a good antivirus with a good detection rate, in order to defend your system against viruses and malware.
This application is normally found on disk in C:\Program Files\WindowsApps\Microsoft.WindowsStore_11706.1001.25.0_x64__8wekyb3d8bbwe\WinStore.App.exe.
The MD5 checksum for this file is 6c10ea41d396929c50840c2db2060314.
This application is NOT a Windows service. This is very good.
This is a 64-bit executable. It runs using the full capacity of modern computer processors.
The description extracted from the program is Store.
File version stored as a property 11706.1001.25.0.
Author Microsoft Corporation.
Legal copyright notice Copyright © 2015.
winstore.app.exe appears to have a visible user interface. This means it doesn't operate in a kind of stealth mode. Its operation is clearly displayed to you.
A digital signature is missing from this program. The maker did not bother to sign it. This is probably bad.
This program does NOT have an uninstall routine set up in registry.