ET INFO Possible WinHttpRequest (no .exe)

Query · suricata

flow:to_server,established;
flowbits:set,et.MS.WinHttpRequest.no.exe.request;
flowbits:noalert;
http.uri;
content:!".exe"; nocase;
content:!".msi"; nocase;
content:!".msp"; nocase;
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)"; fast_pattern;
http.header_names;
content:!"Cookie|0d 0a|";
content:!"Referer|0d 0a|";
content:!"Accept-Language|0d 0a|";
content:!"UA-CPU|0d 0a|";

Rule dependencies

Feeds into

  • 1 rule read et.MS.WinHttpRequest.no.exe.request · view all
Raw source ET INFO Possible WinHttpRequest (no .exe) · 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 Possible WinHttpRequest (no .exe)";
    flow:to_server,established;
    flowbits:set,et.MS.WinHttpRequest.no.exe.request;
    flowbits:noalert;
    http.uri;
    content:!".exe"; nocase;
    content:!".msi"; nocase;
    content:!".msp"; nocase;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)"; fast_pattern;
    http.header_names;
    content:!"Cookie|0d 0a|";
    content:!"Referer|0d 0a|";
    content:!"Accept-Language|0d 0a|";
    content:!"UA-CPU|0d 0a|";
    classtype:misc-activity;
    sid:2022652; rev:4;
    metadata:created_at 2016_03_24, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_02;
)

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