ET HUNTING Abnormal User-Agent No space after colon - Likely Hostile

Query · suricata

flow:established,to_server;
http.header;
content:"User-Agent|3a|Mozilla"; nocase; fast_pattern;
content:!"BlackBerry|3b|";
content:!"PlayBook|3b|";
content:!"Konfabulator";
content:!"masterconn.qq.com";
content:!"QQPCMgr";
Raw source ET HUNTING Abnormal User-Agent No space after colon - Likely Hostile · 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 Abnormal User-Agent No space after colon - Likely Hostile";
    flow:established,to_server;
    http.header;
    content:"User-Agent|3a|Mozilla"; nocase; fast_pattern;
    content:!"BlackBerry|3b|";
    content:!"PlayBook|3b|";
    content:!"Konfabulator";
    content:!"masterconn.qq.com";
    content:!"QQPCMgr";
    classtype:bad-unknown;
    sid:2011800; rev:14;
    metadata:created_at 2010_10_13, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, updated_at 2023_07_06;
)

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