alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/MagicRAT CnC Activity M1"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; http.request_body; content:"session="; startswith; content:"&type=system"; distance:0; fast_pattern; content:!"&"; distance:0; reference:url,blog.talosintelligence.com/2022/09/lazarus-magicrat.html; reference:md5,5c6f9c83426c6d33ff2d4e72c039b747; classtype:trojan-activity; sid:2038780; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_10, deployment Perimeter, malware_family MagicRAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_09;)