ET MALWARE Lazarus FALLCHILL Fake SSL Checkin 1

Query · suricata

flow:established;
dsize:13;
content:"|17 03 01 00 08|"; depth:5;
content:"|88 4d 76|"; distance:5; within:3; fast_pattern;
pcre:"/[\x04\x06]\x88\x4d\x76$/";
Raw source ET MALWARE Lazarus FALLCHILL Fake SSL Checkin 1 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Lazarus FALLCHILL Fake SSL Checkin 1";
    flow:established;
    dsize:13;
    content:"|17 03 01 00 08|"; depth:5;
    content:"|88 4d 76|"; distance:5; within:3; fast_pattern;
    pcre:"/[\x04\x06]\x88\x4d\x76$/";
    reference:url,www.us-cert.gov/ncas/alerts/TA17-318A;
    classtype:command-and-control;
    sid:2024990; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_13, deployment Perimeter, malware_family FALLCHILL, performance_impact Low, confidence High, signature_severity Critical, tag Lazarus, updated_at 2019_07_26;
)

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