Go365

A tool for attacking O365 users

Spray a list of usernames and passwords against M365/Azure/whatever-they're-calling-it-this-week

Go365 -endpoint graph -up UP.txt -debug -w 300 -o CLIENT_output.txt -d domain.com

The UP.txt would be a "users and passwords" file that you'd generate by some other means, such as a dehashed dump.