ET WEB_CLIENT Microsoft Excel file download - SET 1

Query · suricata

flow:established,from_server;
flowbits:isset,OLE.CompoundFile;
file_data;
content:"|09 08 10 00 00 06 05 00|"; distance:512;
content:"|57006F0072006B0062006F006F006B00|"; fast_pattern;
flowbits:set,ETPRO.Microsoft.Excel;
flowbits:noalert;

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

Feeds into

  • Nothing indexed reads ETPRO.Microsoft.Excel.
Raw source ET WEB_CLIENT Microsoft Excel file download - SET 1 · 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 WEB_CLIENT Microsoft Excel file download - SET 1";
    flow:established,from_server;
    flowbits:isset,OLE.CompoundFile;
    file_data;
    content:"|09 08 10 00 00 06 05 00|"; distance:512;
    content:"|57006F0072006B0062006F006F006B00|"; fast_pattern;
    flowbits:set,ETPRO.Microsoft.Excel;
    flowbits:noalert;
    reference:cve,2012-0185;
    classtype:attempted-user;
    sid:2025086; rev:7;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2012_05_10, cve CVE_2012_0185, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_10_08;
)

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