ET HUNTING Microsoft Malware Protection User-Agent Observed to Non-Microsoft Domain

Query · suricata

flow:to_server,established;
http.user_agent;
content:"MpCommunication"; depth:15; fast_pattern;
http.host;
content:!".microsoft.com";
isdataat:!1,relative;
Raw source ET HUNTING Microsoft Malware Protection User-Agent Observed to Non-Microsoft Domain · 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 HUNTING Microsoft Malware Protection User-Agent Observed to Non-Microsoft Domain";
    flow:to_server,established;
    http.user_agent;
    content:"MpCommunication"; depth:15; fast_pattern;
    http.host;
    content:!".microsoft.com";
    isdataat:!1,relative;
    classtype:misc-activity;
    sid:2030850; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_09, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_09;
)

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