alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED W32/Asprox Spam Module CnC Beacon"; flow:established,to_server; content:"POST"; http_method; content:"/index.php"; http_uri; content:"Content-Disposition|3A| form-data|3B| name=|22|sid|22|"; http_client_body; content:"Content-Disposition|3A| form-data|3B| name=|22|up|22|"; http_client_body; distance:0; content:"Content-Disposition|3A| form-data|3B| name=|22|ping|22|"; fast_pattern:32,11; http_client_body; distance:0; content:"Content-Disposition|3A| form-data|3B| name=|22|guid|22|"; distance:0; http_client_body; reference:url,www.welivesecurity.com/2013/03/08/sinkholing-trojan-downloader-zortob-b-reveals-fast-growing-malware-threat/; reference:url,www.trendmicro.com/cloud-content/us/pdfs/security-intelligence/white-papers/wp-asprox-reborn.pdf; classtype:command-and-control; sid:2016561; rev:3; metadata:attack_target Client_Endpoint, created_at 2013_03_12, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)