ET HUNTING HTTP Executable Download from suspicious domain with direct request/fake browser (multiple families)


Query · suricata

flow:from_server,established;
flowbits:isset,ET.Suspicious.Domain.Fake.Browser;
file_data;
content:"MZ"; within:2;
byte_jump:4,58,relative,little;
content:"PE|00 00|"; fast_pattern; distance:-64; within:4;

Rule dependencies

Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET HUNTING HTTP Executable Download from suspicious domain with direct request/fake browser (multiple families) · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET HUNTING HTTP Executable Download from suspicious domain with direct request/fake browser (multiple families)";
    flow:from_server,established;
    flowbits:isset,ET.Suspicious.Domain.Fake.Browser;
    file_data;
    content:"MZ"; within:2;
    byte_jump:4,58,relative,little;
    content:"PE|00 00|"; fast_pattern; distance:-64; within:4;
    classtype:trojan-activity;
    sid:2018572; rev:2;
    metadata:created_at 2014_06_17, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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