ET MALWARE Iron/Maktub Locker Ransomware CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.request_body;
content:"{|22|encry|22 3a 22|"; depth:10; fast_pattern;
content:"|22|randk|22 3a 22|"; distance:0;
content:"|22|guid|22 3a 22|"; distance:0;
content:"|22|start|22 3a 22|"; distance:0;
content:"|22|market|22 3a 22|"; distance:0;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Iron/Maktub Locker Ransomware CnC Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Iron/Maktub Locker Ransomware CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.request_body;
    content:"{|22|encry|22 3a 22|"; depth:10; fast_pattern;
    content:"|22|randk|22 3a 22|"; distance:0;
    content:"|22|guid|22 3a 22|"; distance:0;
    content:"|22|start|22 3a 22|"; distance:0;
    content:"|22|market|22 3a 22|"; distance:0;
    http.header_names;
    content:!"Referer";
    reference:md5,1e60050db59e3d977d2a928fff3d34a6;
    reference:url,bartblaze.blogspot.com/2018/04/maktub-ransomware-possibly-rebranded-as.html;
    classtype:command-and-control;
    sid:2025486; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_04_12, deployment Perimeter, malware_family Iron_Locker, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_25, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)

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