MSSQLUDPScanner is a c# port of NetSPI's Get-SQLInstanceScanUDPThreaded
As an example, one could execute MSSQLUDPScanner.exe through Cobalt Strike's Beacon "execute-assembly" module.
beacon>execute-assembly /root/MSSQLUDPScanner/MSSQLUDPScanner.exe --cidr "192.168.1.0/24"