ET MALWARE Suspected Lazarus APT Validator Related Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.header_names;
content:"|0d 0a|Host|0d 0a|Accept|0d 0a|Content-Type|0d 0a|Content-Length|0d 0a 0d 0a|"; fast_pattern; bsize:48;
http.content_type;
content:"application/octet-stream"; bsize:24;
http.content_len;
byte_test:0,=,33,0,string,dec;
target:src_ip;
Raw source ET MALWARE Suspected Lazarus APT Validator Related Activity (POST) · 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 Suspected Lazarus APT Validator Related Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Accept|0d 0a|Content-Type|0d 0a|Content-Length|0d 0a 0d 0a|"; fast_pattern; bsize:48;
    http.content_type;
    content:"application/octet-stream"; bsize:24;
    http.content_len;
    byte_test:0,=,33,0,string,dec;
    reference:md5,b458e336911f092177a64d07b0bf1c76;
    reference:md5,fed5ff0f9460fea41a8278fffa4c2ddb;
    reference:url,media.kasperskycontenthub.com/wp-content/uploads/sites/43/2023/10/18092216/Updated-MATA-attacks-Eastern-Europe_full-report_ENG.pdf;
    classtype:trojan-activity;
    sid:2049690; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_12_14, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_14;
    target:src_ip;
)

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