alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Ransomware/Coverton CnC 1"; flow:established,to_server; http.request_body; content:"task=report&id="; fast_pattern; http.header_names; to_lowercase; content:!"|0d 0a|user-agent|0d 0a|"; content:!"|0d 0a|referer|0d 0a|"; reference:md5,c5c4f4860c69ea7469ca3be3caf5bf18; classtype:command-and-control; sid:2022677; rev:6; metadata:attack_target Client_Endpoint, created_at 2016_03_28, deployment Perimeter, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_28, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)