alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA430/Andariel APT Related DLRAT Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.user_agent; content:"dlang-requests"; bsize:14; fast_pattern; http.content_type; content:"multipart/form-data|3b 20|boundary="; startswith; pcre:"/^[0-9a-f]{8}(?:(-[0-9a-f]{4}){3})-[0-9a-f]{12}$/R"; http.header_names; content:!"Referer"; http.request_body; content:"form-data|3b 20|name=|22|type|22 3b|"; content:"form-data|3b 20|name=|22|session|22 3b|"; distance:0; reference:md5,9846e2e45000984719804ec2236405bd; reference:url,blog.talosintelligence.com/lazarus_new_rats_dlang_and_telegram/; classtype:trojan-activity; sid:2049656; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_12_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_12_12; target:src_ip;)