ET MALWARE NSIS/TrojanDownloader.Agent.NZK Server Response

Query · suricata

flow:established,to_client;
file.data;
content:"|ce f8 f4 fc fb c8 98 9f|"; startswith; fast_pattern;
content:"|98 9f|";
content:"|98 9f|"; endswith;
Raw source ET MALWARE NSIS/TrojanDownloader.Agent.NZK Server Response · 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 NSIS/TrojanDownloader.Agent.NZK Server Response";
    flow:established,to_client;
    file.data;
    content:"|ce f8 f4 fc fb c8 98 9f|"; startswith; fast_pattern;
    content:"|98 9f|";
    content:"|98 9f|"; endswith;
    reference:md5,168feb87d7264b4ee2b39cffd7d3b5e3;
    classtype:command-and-control;
    sid:2033992; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_09_21, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_21;
)

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