alert smb any any -> $HOME_NET any (msg:"Stamus Networks MS-RRP service - BaseRegDeleteKey"; flow:to_server, established; dcerpc.iface:338CD001-2244-31F1-AAAA-900038001003; dcerpc.opnum:7; flowbits:set,stamus.rrp.service.BaseRegDeleteKey; metadata:lateral_key dcerpc.iface, lateral_function BaseRegDeleteKey, lateral_asset src_ip, stamus_classification lateral, provider Stamus, created_at 2022_03_23, updated_at 2024_08_05, source smb_lateral, signature_severity Informational; target:dest_ip; sid:3115144; rev:4; reference:url,https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rrp/053e8515-dbae-47ea-a7c6-6dc054e3a48f; 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;)