OPENVPN.EXE is not digitally signed.
OPENVPN.EXE is a part of OpenVPN software.
OPENVPN.EXE is located in the %PROGRAM FILES%\AVAST SOFTWARE\AVAST\OPENVPN\OPENVPN.EXE.
Product name: OpenVPN
Product version: 2.3_git.0
File Description: OpenVPN Daemon
Internal Name: OpenVPN
Original Filename: openvpn.exe
File Version: 2.3_git.0
Company Name: The OpenVPN Project
Legal Copyright: Copyright c The OpenVPN Project
File Size: 619008
SHA256 Hash: A5B4F32F6FCC58DE2734D0F4064F00799279CD74A6DDA805617DA1A0D00EC648
File OPENVPN.EXE has no digital signature.