ET MALWARE [PTsecurity] MZRevenge Ransomware Server Response

Query · suricata

flow:established,to_client;
content:"|0d 0a 0d 0a|MZR-";
isdataat:!180; fast_pattern;
http.content_type;
content:"text/html|3b 20|charset=UTF-8"; endswith; bsize:24;
Raw source ET MALWARE [PTsecurity] MZRevenge Ransomware Server Response · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE [PTsecurity] MZRevenge Ransomware Server Response";
    flow:established,to_client;
    content:"|0d 0a 0d 0a|MZR-";
    isdataat:!180; fast_pattern;
    http.content_type;
    content:"text/html|3b 20|charset=UTF-8"; endswith; bsize:24;
    reference:url,app.any.run/tasks/e5a3d700-993f-47ab-bde1-e9ed8e9d323e/;
    classtype:trojan-activity;
    sid:2029644; rev:2;
    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 2020_03_18, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)

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