alert smb any any -> $HOME_NET any (msg:"Stamus Networks MS-SAMR service - Opnum76NotUsedOnWire"; flow:to_server, established; dcerpc.iface:12345778-1234-ABCD-EF00-0123456789AC; dcerpc.opnum:76; flowbits:set,stamus.samr.service.Opnum76NotUsedOnWire; metadata:lateral_key dcerpc.iface, lateral_function Opnum76NotUsedOnWire, lateral_asset src_ip, stamus_classification lateral, provider Stamus, created_at 2022_04_03, updated_at 2024_08_05, source smb_lateral, signature_severity Informational; target:dest_ip; sid:3115666; rev:4; reference:url,https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-samr/3f15814e-4600-4647-abfd-3890f5f3570c; 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;)