msascuil.exe is a application which is probably NOT a virus or malware. So, if msascuil.exe is on your laptop or desktop computer, it is probably ok, and will NOT cause problems. Even if your system is clean, it is still recommended to use a good antivirus with a good track record, in order to yourself yourself against threats.
Usually, this application is stored in C:\Program Files\Windows Defender\MSASCuiL.exe.
The MD5 fingerprint for this executable is e0d48e319dcfd31115d9f978d2be97ba.
This program does NOT run as a Windows service. This is normally a good sign.
msascuil.exe appears to have something to do with Windows SFC (System File Checker) or Windows File Protection.
64-bit code has been detected. This program can put to good use the full power of a modern PC processor.
The description written in the program is Windows Defender notification icon.
File version 4.12.16299.15 (WinBuild.160101.0800).
Producer Microsoft Corporation.
Legal copyright © Microsoft Corporation. All rights reserved..
This executable does NOT have visible windows. This is usually a bad thing.
Some dangerous features of the Operating System appear to be used, such as functions for intercepting the keyboard. We advise you to be very careful regarding this program.
msascuil.exe is digitally signed. Nowadays the large majority of serious software applications are digitally signed.
The digital signature extracted from msascuil.exe checks out perfectly. This is most likely a clean, ok program.
Digital certificate name: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This program does NOT have an uninstall routine stored in registry.