ET INFO OneNote Notebook Downloaded via Powershell

Query · suricata

flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:".one"; endswith;
http.user_agent;
content:"WindowsPowerShell/"; fast_pattern;
http.header_names;
content:!"Referer";
Raw source ET INFO OneNote Notebook Downloaded via Powershell · 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 OneNote Notebook Downloaded via Powershell";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:".one"; endswith;
    http.user_agent;
    content:"WindowsPowerShell/"; fast_pattern;
    http.header_names;
    content:!"Referer";
    reference:url,twitter.com/executemalware/status/1613636484778663936;
    classtype:misc-activity;
    sid:2043296; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_13, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_16, reviewed_at 2025_10_24;
)

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