stacsv64.exe is a program which is probably legit. So, if stacsv64.exe is on your system, it is probably ok, and will NOT be a cause for concern. Even if your system is clean, we still advise you to run a good antivirus with a good detection rate, in order to yourself your system against viruses and malware.
Usually, the default name and path where the program is stored is
C:\Windows\System32\DriverStore\FileRepository\stwrt64.inf_amd64_neUserNametral_960c1f056a541068\stacsv64.exe.
The MD5 fingerprint for this program is 7595d53ee8e8b0baa9a2ddde867ebb0c.
This program is set up as a Windows service. This means it operates on your system in background, usually without showing anything to you. Most Windows services are useful programs, which perform useful functions to other applications or to the Windows Operating System.
64-bit code has been detected. This exe can use the full power of a modern computer processor.
The description present in the program is IDT PC Audio.
File version extracted from the file 1.0.6276.0.
Author IDT, Inc..
Intellectual property rights notice Copyright © 2004 - 2009 IDT, Inc..
Some unusual functions of Windows have been used, such as functions for intercepting the keyboard. We recommend you to be very careful regarding this program.
stacsv64.exe is digitally signed. Nowadays most clean programs are digitally signed.
The digital signature extracted from stacsv64.exe is valid. This is excellent.
Digitally signed by: Microsoft Windows Hardware Compatibility Publisher
Certificate's issuer name: Microsoft Windows Hardware Compatibility PCA
This application does NOT have a removal routine set up in registry.