ET MALWARE Win32/Small.XR Checkin 2 WEBC2-CSON APT1 Related

Query · suricata

flow:to_server,established;
urilen:27;
http.uri;
content:"/Default.aspx?ID=";
pcre:"/^[A-Z]{10}$/R";
http.user_agent;
content:!"Mozilla"; startswith;
Raw source ET MALWARE Win32/Small.XR Checkin 2 WEBC2-CSON APT1 Related · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Small.XR Checkin 2 WEBC2-CSON APT1 Related";
    flow:to_server,established;
    urilen:27;
    http.uri;
    content:"/Default.aspx?ID=";
    pcre:"/^[A-Z]{10}$/R";
    http.user_agent;
    content:!"Mozilla"; startswith;
    reference:url,www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=TrojanDownloader%3AWin32%2FSmall.XR;
    reference:url,www.mandiant.com/apt1;
    reference:md5,ba45339da92ca4622b472ac458f4c8f2;
    classtype:targeted-activity;
    sid:2016459; rev:6;
    metadata:created_at 2013_02_22, malware_family Win32_Small_XR, signature_severity Major, updated_at 2020_04_23;
)

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