alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE TA427 Suspected ReconShark Related Response (Inbound)"; flow:established,to_client; http.header; content:"x-goog-hash|3a 20|"; nocase; file.data; content:"johnbegin--"; content:"--johnend"; fast_pattern; classtype:trojan-activity; sid:2048127; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_09_20, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_20, reviewed_at 2023_09_20; target:dest_ip;)