alert smb any any -> $HOME_NET any (msg:"Stamus Networks MS-DRSUAPI service - IDL_DRSReplicaSync"; flow:to_server, established; dcerpc.iface:e3514235-4b06-11d1-ab04-00c04fc2dcd2; dcerpc.opnum:2; flowbits:set,stamus.drsuapi.service.IDL_DRSReplicaSync; metadata:lateral_key dcerpc.iface, lateral_function IDL_DRSReplicaSync, lateral_asset src_ip, stamus_classification lateral, provider Stamus, created_at 2022_03_30, updated_at 2024_08_05, source smb_lateral, signature_severity Critical; target:dest_ip; sid:3115222; rev:4; reference:url,https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-drsr/58f33216-d9f1-43bf-a183-87e3c899c410; reference:url,https://www.stamus-networks.com/blog/new-open-ruleset-for-detecting-lateral-movement-with-suricata; reference:url,https://www.stamus-networks.com/blog/threat-hunting-with-the-open-lateral-movement-ruleset-for-suricata;)