You want to integrate ATP: Endpoint with your SEPM Database running on an MS SQL server.
Starting with Advanced Threat Protection version 3.0, the ATP software can authenticate with SEP Database (MS SQL) servers with Active Directory credentials.
ATP 3.1 uses NTLMv1 to connect to the SQL Server. NTLMv2 support has been added in ATP version 3.2.. Please update to ATP 3.2 or SEDR.