alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE BandarChor/CryptON Ransomware Checkin"; flow:to_server,established; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"=8ACEFC"; offset:1; depth:7; fast_pattern; pcre:"/=8ACEFC[0-9A-F]{150,}$/"; http.content_type; content:"application/x-www-form-urlencoded"; startswith; reference:md5,5ee28035c56c048580c64b67ec4f2124; classtype:command-and-control; sid:2022875; rev:2; metadata:attack_target Client_Endpoint, created_at 2016_06_08, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, updated_at 2020_07_14, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)