alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE [PTsecurity] MZRevenge Ransomware Server Response"; flow:established,to_client; http.content_type; bsize:24; content:"text/html|3b 20|charset=UTF-8"; file.data; content:"MZR-"; startswith; isdataat:!180; fast_pattern; reference:url,app.any.run/tasks/e5a3d700-993f-47ab-bde1-e9ed8e9d323e/; classtype:trojan-activity; sid:2029644; rev:3; metadata:attack_target Client_Endpoint, created_at 2020_03_18, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_17, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)