ET MALWARE Lazarus Group Comebacker Backdoor CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
pcre:"/^\/(download\/download|user\/agency|manage\/manage|upload\/upload)/";
content:".asp"; endswith;
http.request_body;
content:"|3d|MgAwADIA"; fast_pattern;
target:src_ip;
Raw source ET MALWARE Lazarus Group Comebacker Backdoor CnC Checkin · 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 Lazarus Group Comebacker Backdoor CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    pcre:"/^\/(download\/download|user\/agency|manage\/manage|upload\/upload)/";
    content:".asp"; endswith;
    http.request_body;
    content:"|3d|MgAwADIA"; fast_pattern;
    reference:url,blogs.jpcert.or.jp/en/2024/02/lazarus_pypi.html;
    classtype:trojan-activity;
    sid:2051149; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_02_28, deployment Perimeter, malware_family Comebacker, performance_impact Low, confidence High, signature_severity Major, tag Lazarus, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_28;
    target:src_ip;
)

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