alert smb $HOME_NET any -> $HOME_NET any (msg:"ET INFO Outbound SMB2 NTLM Auth Attempt to Internal Address"; flow:established,to_server; content:"|fe|SMB"; content:"NTLMSSP|00 03 00 00 00|"; within:200; fast_pattern; classtype:misc-activity; sid:2059126; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, affected_product Windows_8, affected_product Windows_10, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_01_10, deployment Internal, performance_impact Significant, confidence High, signature_severity Informational, updated_at 2025_01_10; target:src_ip;)