alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Ransomware Locky CnC Beacon 2"; flow:established,to_server; urilen:13; http.method; content:"POST"; http.uri; content:"/userinfo.php"; fast_pattern; http.request_body; pcre:"/[\x80-\xff]/"; http.content_type; content:"www-form-urlencoded"; endswith; http.header_names; content:"|0d 0a|User-Agent|0d 0a|"; content:!"Referer"; content:!"Accept"; reference:md5,042b2e41a14b67570a993ef909621954; classtype:command-and-control; sid:2022769; rev:5; metadata:attack_target Client_Endpoint, created_at 2016_04_27, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_15, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)