avastsvc.exe is a application which is probably legit. So, if avastsvc.exe is on your PC, it is probably ok, and will NOT cause problems. Even if your PC is clean, it is still recommended to use a well-known antivirus with a good detection rate, in order to yourself your system against viruses and malware.
The default filename and folder where this program is stored is
C:\Program Files\AVAST Software\Avast\AvastSvc.exe.
The MD5 checksum for this program is 810213d59b8ef46a27b3bfc4a3431edc.
This application is registered as a Windows service. This means it operates on your system in background, usually without showing anything to you. Most Windows services are ok programs, which perform useful functions to other applications or to Windows in general.
This executable uses the Internet to communicate. In this day and age this is quite normal. For example, most of the apps on your PC check for new updates. In order to do this, Internet communications are required.
This program runs as a 32-bit program. It can not use the full power of modern PC processors. This is quite normal because the authors did not upgrade it to use the x64 instruction set.
The description extracted from the file is Avast Service.
File version 17.9.3761.0.
Company name AVAST Software.
Intellectual property rights notice Copyright (c) 2014 AVAST Software.
avastsvc.exe has a digital signature. Today most clean software applications are digitally signed.
The digital signature attached to avastsvc.exe verifies as ok. This is excellent.
Digital certificate name: AVAST Software s.r.o.
Certificate's issuer name: DigiCert High Assurance Code Signing CA-1
It has an uninstall string in registry, which is a good sign. si are uninstall.