alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Password Stealer Reporting - ?a=%NN&b="; flow:to_server,established; content:"POST"; nocase; http_method; content:"a=%"; http_raw_uri; content:"&b="; http_uri; pcre:"/a=\%[0-9a-fA-F]{2}\&b/Ii"; classtype:trojan-activity; sid:2009082; rev:6; metadata:created_at 2010_07_30, signature_severity Unknown, updated_at 2019_07_26;)