alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Farfli.BHQ!tr Dropper CnC Beacon"; flow:established,to_server; urilen:8; http.method; content:"GET"; http.uri; content:"/php.php"; fast_pattern; http.host; pcre:"/^\d{1,3}\x2E\d{1,3}\x2E\d{1,3}\x2E\d{1,3}/"; http.user_agent; content:"Mozilla/4.0 (compatible)"; depth:24; reference:md5,cb53a6e8d65d86076fc0c94dac62aa77; classtype:command-and-control; sid:2019946; rev:4; metadata:attack_target Client_Endpoint, created_at 2014_12_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_10_20, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)