alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE WildPressure/Milum CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.user_agent; content:"Python-urllib/"; startswith; http.request_body; content:"pk="; fast_pattern; startswith; content:"&value="; distance:0; pcre:"/^pk=[A-Za-z0-9]{8,50}&value=[a-f0-9]{50,500}$/s"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,securelist.com/wildpressure-targets-macos/103072/; reference:md5,92a11f0dcb973d1a58d45c995993d854; classtype:trojan-activity; sid:2033316; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_07_12, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_30;)