ET MALWARE Win32/RiskWare.YouXun.AD CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"?sc=";
content:!"&"; distance:0;
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.user_agent;
content:"Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31"; bsize:101; fast_pattern;
Raw source ET MALWARE Win32/RiskWare.YouXun.AD CnC Activity · Suricata
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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/RiskWare.YouXun.AD CnC Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"?sc=";
    content:!"&"; distance:0;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31"; bsize:101; fast_pattern;
    reference:md5,2292c6acb1e5f139900b9d1942b14b08;
    classtype:command-and-control;
    sid:2032977; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_05_18, deployment Perimeter, malware_family Win32_RiskWare_YouXun_AD, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_18;
)

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