Nu stiu exact cat te poate ajuta, dar poate poate

EXEC dbo.sp_help_revlogin

http://www.sqlhammer.com/blog/2012/08/20/how-to-transfer-logins-to-a-new-server

sau pt hash ul
LOGINPROPERTY ( 'login_name' , 'property_name' ) cu property_name setat la PasswordHash

SELECT name, LOGINPROPERTY([name], 'PasswordHash') AS 'PasswordHash'
FROM sys.sql_logins