ET MALWARE Xenorat Default C2 Server Response Inbound

Query · suricata

flow:established,to_client;
dsize:21;
content:"|11 00 00 00 00 dc db 8d 8b 56 4b f3 37 ae 1a e8 c3 b7 2e 8c 8c|";
target:dest_ip;
Raw source ET MALWARE Xenorat Default C2 Server Response Inbound · 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 tcp-pkt $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Xenorat Default C2 Server Response Inbound";
    flow:established,to_client;
    dsize:21;
    content:"|11 00 00 00 00 dc db 8d 8b 56 4b f3 37 ae 1a e8 c3 b7 2e 8c 8c|";
    reference:url,axmahr.github.io/posts/xenorat-detection/;
    classtype:trojan-activity;
    sid:2058410; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_12_19, deployment Perimeter, malware_family XenoRat, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_12_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1573, mitre_technique_name Encrypted_Channel;
    target:dest_ip;
)

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