alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Vobfus Check-in"; flow:established,to_server; http.uri; content:".php?page="; content:"&style=LED_g&nbdigits="; distance:0; fast_pattern; http.user_agent; content:"Opera"; nocase; depth:5; classtype:trojan-activity; sid:2016940; rev:4; metadata:created_at 2013_05_29, signature_severity Major, updated_at 2020_04_24;)