alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Likely Geodo/Emotet CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/"; offset:9; depth:3; pcre:"/^\/-?[a-f0-9]{8,9}\/-?\d+(?:\.php|\/)$/"; http.user_agent; content:"Mozilla/5.0 (compatible|3b 20|MSIE 9.0|3b 20|Windows NT 7.1|3b 20|Trident/5.0)"; fast_pattern; http.header_names; content:!"Accept-"; content:!"Content-Type"; content:!"Referer|0d 0a|"; reference:md5,6c4d198794d1afd2b8bbae6f16bdfaa7; classtype:command-and-control; sid:2035045; rev:5; metadata:attack_target Client_Endpoint, created_at 2015_03_17, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2020_05_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)