ET MALWARE MSIL/Firebird RAT CnC Checkin

Query · suricata

flow:established,to_server;
dsize:<100;
content:"|01 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 06 01 00 00 00|"; depth:22; fast_pattern;
content:"|0b|"; endswith;
Raw source ET MALWARE MSIL/Firebird RAT 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 tcp $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE MSIL/Firebird RAT CnC Checkin";
    flow:established,to_server;
    dsize:<100;
    content:"|01 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 06 01 00 00 00|"; depth:22; fast_pattern;
    content:"|0b|"; endswith;
    reference:md5,ede8ebfc82463d1e7e6f29ca66f96514;
    classtype:command-and-control;
    sid:2029606; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_03_11, deployment Perimeter, malware_family Firebird, confidence High, signature_severity Major, updated_at 2022_07_21, reviewed_at 2024_04_30;
)

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