alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Chinotto CnC Activity (hello)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?"; content:"type=hello"; fast_pattern; content:"&direction="; pcre:"/^(send|receive)/R"; content:"id="; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,55afe67b0cd4a01f3a9a6621c26b1a49; reference:url,securelist.com/scarcruft-surveilling-north-korean-defectors-and-human-rights-activists/105074/; classtype:trojan-activity; sid:2034562; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_30, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_26;)