alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Gimemo Ransomware Checkin"; flow:established,to_client; file.data; content:"/gate.php?computername="; nocase; classtype:command-and-control; sid:2016496; rev:5; metadata:attack_target Client_Endpoint, created_at 2013_02_25, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2024_03_13, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)