alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Obitel trojan calling home"; flow:established,to_server; http.uri; content:"/gate.php?hash="; fast_pattern; pcre:"/^[a-z0-9]{8,16}$/"; reference:url,www.abuse.ch/?p=143; classtype:trojan-activity; sid:2008405; rev:6; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_16;)