alert http [$HTTP_SERVERS,$HOME_NET] any -> $EXTERNAL_NET any (msg:"ET MALWARE PHP Skimmer Exfil Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".dll"; endswith; http.content_type; content:"text/plain"; bsize:10; http.request_body; content:"|22|cc_type|22|"; content:"|22|cc_number|22|"; fast_pattern; content:"|22|ip|22|"; content:"|22|cc_cid|22|"; content:"|22|site|22|"; reference:url,lukeleal.com/research/posts/secure-authorize-dot-net-skimmer/; classtype:command-and-control; sid:2032829; rev:2; metadata:affected_product Web_Server_Applications, affected_product Magento, attack_target Web_Server, created_at 2021_04_26, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2021_04_26;)