This is a Windows system installed file with Windows File Protection (WFP) enabled.
There are 44 versions of wshext.dll in the wild, the latest version being 5.7.0.18066. The average file size is about 81.7 KB.
The Microsoft Windows Script Host (WSH) is an automation technology for Microsoft Windows that provides scripting abilities comparable to batch files, but with a wider range of supported features. It was originally called Windows Scripting Host, but was renamed for the second release.
(Note, the behaviors below are for all versions of wshext.dll, select a unique version for details.)
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved'
United States installs about 50.44% of Microsoft (R) Windows Script Host.