iusb3mon.exe is a application which is probably legit. So, if iusb3mon.exe is on your system, it is probably ok, and will NOT be a cause for concern. Even if your system is virus-free, it is still recommended to use a well-known antivirus with a good track record, in order to defend your PC against potential security problems.
Normally, this application is found in C:\Program Files (x86)\Intel\Intel(R) USB 3.0 eXtensible Host Controller Driver\Application\iusb3mon.exe.
The MD5 fingerprint for this file is 883fd3896a410f9b526293d471dc1ace.
This program is NOT a Windows service. This is good.
This exe runs as a 32-bit program. It can not benefit of the full power of nowadays' computer chips. This is quite normal because the publishers did not bother to upgrade it to 64-bit code.
The description extracted from the program is iusb3mon.
File version stored as a property 126.96.36.199.
Company Intel Corporation.
Copyright notice (C) 2011 - 2015 Intel Corporation.
This exe does NOT have visible elements of user interface. This is usually a bad thing.
iusb3mon.exe is digitally signed. Today the large majority of serious software applications are digitally signed.
The digital signature found in iusb3mon.exe verifies as ok. This is very good.
Digital certificate name: Intel Corporation - Software and Firmware Products
Certificate's issuer name: Intel External Basic Issuing CA 3B
This program starts at Windows startup. Yes
It has an uninstall string in registry, which is good. si are uninstall.