ET WEB_CLIENT Microsoft OLE Compound File Magic Bytes Flowbit Set

Query · suricata

flow:to_client,established;
file_data;
content:"|d0 cf 11 e0 a1 b1 1a e1|"; within:8;
content:!".msi";
flowbits:set,OLE.CompoundFile;
flowbits:noalert;

Rule dependencies

Feeds into

  • 6 rules read OLE.CompoundFile · view all
Raw source ET WEB_CLIENT Microsoft OLE Compound File Magic Bytes Flowbit Set · 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 WEB_CLIENT Microsoft OLE Compound File Magic Bytes Flowbit Set";
    flow:to_client,established;
    file_data;
    content:"|d0 cf 11 e0 a1 b1 1a e1|"; within:8;
    content:!".msi";
    flowbits:set,OLE.CompoundFile;
    flowbits:noalert;
    classtype:protocol-command-decode;
    sid:2012520; rev:7;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_12_15, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;
)

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