ET INFO Dotted Quad Host XLSX Request

Query · suricata

flow:established,from_client;
flowbits:isset,http.dottedquadhost;
flowbits:set,http.dottedquadhost.xlsx;
flowbits:unset,http.dottedquadhost;
http.request_line;
content:".xlsx HTTP/1."; nocase; fast_pattern;

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 http.dottedquadhost.xlsx.
Raw source ET INFO Dotted Quad Host XLSX Request · Suricata
Esc
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 INFO Dotted Quad Host XLSX Request";
    flow:established,from_client;
    flowbits:isset,http.dottedquadhost;
    flowbits:set,http.dottedquadhost.xlsx;
    flowbits:unset,http.dottedquadhost;
    http.request_line;
    content:".xlsx HTTP/1."; nocase; fast_pattern;
    classtype:bad-unknown;
    sid:2027254; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2019_04_23, deployment Perimeter, performance_impact Significant, confidence High, signature_severity Minor, tag Phishing, updated_at 2020_04_08;
)

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