alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/MailerBot CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.cookie; content:"PHPSESSID="; startswith; isdataat:!35,relative; http.request_body; content:"status=0"; bsize:8; fast_pattern; http.header_names; content:!"Referer"; reference:md5,33ae450f091a57c042e9dd99800ff6c8; classtype:command-and-control; sid:2029183; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_18, deployment Perimeter, malware_family MailerBot, confidence High, signature_severity Major, updated_at 2019_12_18;)