ET MALWARE Datoploader Activity M2 (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/^\/[a-zA-Z0-9]{9,12}\/x\.html$/";
http.request_line;
content:"/x.html HTTP/1.1"; endswith; fast_pattern;
http.header_names;
content:"|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a|"; startswith;
content:!"Referer";
Raw source ET MALWARE Datoploader Activity M2 (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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Datoploader Activity M2 (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\/[a-zA-Z0-9]{9,12}\/x\.html$/";
    http.request_line;
    content:"/x.html HTTP/1.1"; endswith; fast_pattern;
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a|"; startswith;
    content:!"Referer";
    reference:md5,d868b389f2f824a32367767a17b397b8;
    reference:url,www.trendmicro.com/en_us/research/21/k/Squirrelwaffle-Exploits-ProxyShell-and-ProxyLogon-to-Hijack-Email-Chains.html;
    classtype:trojan-activity;
    sid:2034546; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2021_11_24, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_24;
)

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