ET MALWARE WikiLoader Activity M4 (Response)

Query · suricata

flow:established,to_client;
flowbits:set,ET.wikiloader;
file.data;
content:"</option><!--gmail|20|"; fast_pattern;
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})/R";
content:"|20|-->"; distance:0;
target:dest_ip;

Rule dependencies

Feeds into

  • 3 rules read ET.wikiloader · view all
Raw source ET MALWARE WikiLoader Activity M4 (Response) · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE WikiLoader Activity M4 (Response)";
    flow:established,to_client;
    flowbits:set,ET.wikiloader;
    file.data;
    content:"</option><!--gmail|20|"; fast_pattern;
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})/R";
    content:"|20|-->"; distance:0;
    reference:md5,c5b76423675f8ef473225a753f0ce626;
    reference:url,securityintelligence.com/x-force/wailingcrab-malware-misues-mqtt-messaging-protocol/;
    classtype:trojan-activity;
    sid:2049275; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_11_21, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_21;
    target:dest_ip;
)

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