alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Ciadoor.10.UPX CnC Activity M1"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"from=CIA"; startswith; content:"|26|body|3d|Your|20|Subject|20|is|20|Online|20 3a|P|20|Victim|20|Name|3a 20|"; fast_pattern; content:"Clients|20|Conneted|3a 20|"; distance:0; reference:md5,7055137624d83f3c6025caf1e62e85f6; classtype:command-and-control; sid:2034293; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_29, deployment Perimeter, deprecation_reason Relevance, malware_family Win32_Ciadoor_10_UPX, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_29;)