ET MALWARE BazaLoader Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.header;
pcre:"/^Date\x3a\x20[^\r\n]+[0-9]{2}::[0-9]{2}\x20/";
http.header_names;
content:"|0d 0a|Date|0d 0a|Cookie|0d 0a|"; startswith;
content:!"Referer";
content:!"Accept";
http.user_agent;
content:"Win"; bsize:3;
Raw source ET MALWARE BazaLoader Activity (GET) · 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 BazaLoader Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.header;
    pcre:"/^Date\x3a\x20[^\r\n]+[0-9]{2}::[0-9]{2}\x20/";
    http.header_names;
    content:"|0d 0a|Date|0d 0a|Cookie|0d 0a|"; startswith;
    content:!"Referer";
    content:!"Accept";
    http.user_agent;
    content:"Win"; bsize:3;
    reference:md5,f75e5710a5c84cec8e06b9b5c99e5400;
    reference:url,twitter.com/malware_traffic/status/1412914497338097664;
    classtype:trojan-activity;
    sid:2033279; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_07_08, deployment Perimeter, deployment SSLDecrypt, malware_family BazaLoader, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_08;
)

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