• Arc
• or maybe Arc Client

Developer:
Perfect World Entertainment Inc

Website:
https://www.arcgames.com

Download Site:
https://www.arcgames.com/en/about/client
You can delete the "en" so it loads the correct language

Version number displayed in the app:
1.1.0.18668

App-Icon (in ICO format)

Notes:

• The version number is not stored in the Registry (I just searched for "1.1.0.18668")
• The version number is also not stored in any EXE or DLL in the Arc folder (including all sub-folders)
• At startup of Arc the application updates itself automatically
• The icon is available in 256 x 256 pixel

Here the information extracted from the Arc.exe file:

File name and path:     E:\Arc\Arc.exe
Product Name:           Arc
Internal Name:          Arc.exe
Original Filename:      Arc.exe

File Description:       Arc Update
Company:                Perfect World Entertainment Inc
Legal Copyright:        Copyright(C)2010. Perfect World Entertainment Inc.All rights reserved.
Legal Trademarks:       
Comments:               

File Version String:    1.0.0.1
File Version:           1.0.0.1
Product Version String: 1.0.0.1
Product Version:        1.0.0.1

Here the information extracted from the ArcLauncher.exe file (opened when you launch Arc from the start menu):

File name and path:     E:\Arc\ArcLauncher.exe
Product Name:           Arc
Internal Name:          Arc
Original Filename:      ArcLauncher.exe

File Description:       Arc
Company:                Perfect World Entertainment
Legal Copyright:        Copyright (C) 2012
Legal Trademarks:       
Comments:               

File Version String:    1, 0, 0, 1
File Version:           1.0.0.1
Product Version String: 1, 0, 0, 1
Product Version:        1.0.0.1