alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SpyEye HTTP Library Checkin"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"form-data|3b 20|name=|22|sid|22|"; content:"form-data|3b 20|name=|22|ping|22|"; content:"form-data|3b 20|name=|22|guid|22|"; content:"form-data|3b 20|name=|22|GB|22 3b 20|filename=|22|GB.TXT|22|"; fast_pattern; reference:url,nakedsecurity.sophos.com/2011/02/01/outbreak-post-express-service-malware-attack-spammed-out; classtype:command-and-control; sid:2012279; rev:5; metadata:created_at 2011_02_03, signature_severity Major, updated_at 2024_03_13;)