alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA430/Andariel APT HazyLoad Proxy Related Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:!"|2e|"; http.user_agent; content:"Mozilla/5.0(Windows"; fast_pattern; startswith; http.content_type; content:"multipart/form-data|3b 20|boundary="; startswith; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,996169a3740c5eae070630222076d0e8; classtype:trojan-activity; sid:2049685; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_12_13, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_27; target:src_ip;)