ET MALWARE Win32/Sehyioa Variant Activity (Download)

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
file_data;
content:"seCurEstrInGTogloBALAlLoCUnicOdE|28 20 24 28 27|76492d1116743f0423413b16050a5345MgB8A"; nocase; fast_pattern;
Raw source ET MALWARE Win32/Sehyioa Variant Activity (Download) · Suricata
Esc
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 Win32/Sehyioa Variant Activity (Download)";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    file_data;
    content:"seCurEstrInGTogloBALAlLoCUnicOdE|28 20 24 28 27|76492d1116743f0423413b16050a5345MgB8A"; nocase; fast_pattern;
    reference:md5,fc30e902d1098b7efd85bd2651b2293f;
    reference:url,www.group-ib.com/blog/oldgremlin;
    classtype:trojan-activity;
    sid:2030905; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_09_23, deployment Perimeter, malware_family Win32_Sehyioa, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_23;
)

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