alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TURLA APT CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/scripts/m/query.php?id="; fast_pattern; startswith; http.header_names; content:!"Referer"; content:!"Accept"; reference:url,www.welivesecurity.com/wp-content/uploads/2018/01/ESET_Turla_Mosquito.pdf; classtype:command-and-control; sid:2030829; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_09_02, deployment Perimeter, deployment SSLDecrypt, malware_family Turla, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_02;)