ET MALWARE Possible Graftor EXE Download Common Header Order

Query · suricata

flow:established,to_server;
http.uri;
content:".exe"; endswith;
http.user_agent;
content:"MSIE";
http.connection;
content:"close"; nocase;
http.header_names; bsize:76;
content:"|0d 0a|Host|0d 0a|Accept-Language|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|Connection|0d 0a|User-Agent|0d 0a 0d 0a|"; fast_pattern;
Raw source ET MALWARE Possible Graftor EXE Download Common Header Order · 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 Possible Graftor EXE Download Common Header Order";
    flow:established,to_server;
    http.uri;
    content:".exe"; endswith;
    http.user_agent;
    content:"MSIE";
    http.connection;
    content:"close"; nocase;
    http.header_names; bsize:76;
    content:"|0d 0a|Host|0d 0a|Accept-Language|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|Connection|0d 0a|User-Agent|0d 0a 0d 0a|"; fast_pattern;
    reference:md5,5d9d5b9089ad464e51ff391b14da1953;
    classtype:trojan-activity;
    sid:2018254; rev:6;
    metadata:created_at 2014_03_12, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_10, reviewed_at 2024_02_16;
)

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