ET MALWARE [ANY.RUN] Meduza Stealer Exfiltration M1

Query · suricata

flow:established,to_server;
stream_size:server,=,1;
content:"ewogICAgImNocm9taXVtX2Jyb3dzZXJzIjog"; startswith; fast_pattern;
Raw source ET MALWARE [ANY.RUN] Meduza Stealer Exfiltration 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 tcp $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE [ANY.RUN] Meduza Stealer Exfiltration M1";
    flow:established,to_server;
    stream_size:server,=,1;
    content:"ewogICAgImNocm9taXVtX2Jyb3dzZXJzIjog"; startswith; fast_pattern;
    reference:md5,6c2283c27a3ac1164aad01f982f17db3;
    reference:url,twitter.com/Jane_0sint/status/1670048531665518592;
    reference:url,app.any.run/tasks/cf27f0ec-1be0-4353-82fc-d392eaa8b24b;
    classtype:trojan-activity;
    sid:2046303; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_06_20, deployment Perimeter, malware_family Meduza, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_29;
)

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