alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/CollectorStealer CnC Exfil M3"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.content_type; bsize:49; content:"multipart/form-data|3b 20|boundary=SendFileZIPBoundary"; http.user_agent; bsize:8; content:"uploader"; http.header_names; strip_pseudo_headers; to_lowercase; content:"|0d 0a|content-type|0d 0a|"; startswith; http.request_body; content:"form-data|3b 20|name=|22|fileToUpload|22 3b 20|filename=|22|zipfile.zip"; fast_pattern; reference:md5,fe15986992ef7dd209047deec2851e2e; classtype:command-and-control; sid:2034324; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_07_27, deployment Perimeter, malware_family CollectorStealer, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_04;)