alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE UNK NSFWBot CnC Command Inbound"; flow:established,to_client; flowbits:isset,ET.UNK.NSFWBOT; http.response_body; content:"|7b 22|command|5f|id|22 3a 22|"; startswith; fast_pattern; pcre:"/^\d{13}/R"; content:"|22 2c 22|type|22 3a 22|"; within:10; content:"|22|params|22|"; distance:0; classtype:command-and-control; sid:2061776; rev:1; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2025_04_21, deployment Perimeter, confidence High, signature_severity Critical, tag c2, updated_at 2025_04_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:dest_ip;)