ET MALWARE Jaff Ransomware Checkin

Query · suricata

flow:to_server,established;
http.method;
content:"GET";
http.host;
content:"fkksjobnn43.org"; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a 0d 0a|"; endswith;
Raw source ET MALWARE Jaff Ransomware 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 Jaff Ransomware Checkin";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.host;
    content:"fkksjobnn43.org"; fast_pattern;
    http.header_names;
    content:"|0d 0a|Host|0d 0a 0d 0a|"; endswith;
    reference:url,blogs.forcepoint.com/security-labs/jaff-enters-ransomware-scene-locky-style;
    reference:md5,942c6a039724ed5326c3c247bfce3461;
    classtype:command-and-control;
    sid:2024288; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_11, deployment Perimeter, malware_family Jaff_Ransomware, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_03, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)

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