ET MALWARE Ragnarok Ransomware CnC Activity M1

Query · suricata

flow:established,to_server;
http.start; bsize:22;
content:"GET /START_ HTTP/1.1|0d 0a|";
Raw source ET MALWARE Ragnarok Ransomware CnC Activity M1 · 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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Ragnarok Ransomware CnC Activity M1";
    flow:established,to_server;
    http.start; bsize:22;
    content:"GET /START_ HTTP/1.1|0d 0a|";
    reference:url,twitter.com/malwrhunterteam/status/1256263426441125888;
    reference:md5,32ed52d918a138ddad24dd3a84e20e56;
    classtype:command-and-control;
    sid:2030116; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_06, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_06, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)

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