ET ATTACK_RESPONSE Lumma Stealer Payload Inbound

Query · suricata

flow:established,to_client;
http.response_body;
content:"|66 69 6c 65 6e 61 6d 65 3d 22 66 75 63 6b 69 6e 67 64 6c 6c 45 4e 43 52 2e 64 6c 6c 22 3b|";
target:dest_ip;
Raw source ET ATTACK_RESPONSE Lumma Stealer Payload Inbound · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET ATTACK_RESPONSE Lumma Stealer Payload Inbound";
    flow:established,to_client;
    http.response_body;
    content:"|66 69 6c 65 6e 61 6d 65 3d 22 66 75 63 6b 69 6e 67 64 6c 6c 45 4e 43 52 2e 64 6c 6c 22 3b|";
    reference:md5,e627cad277450feb0685a9b2abd981f8;
    reference:md5,9c44f98f428e7a562553944c3067f73b;
    classtype:trojan-activity;
    sid:2064256; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_09_02, deployment Perimeter, malware_family Lumma_Stealer, confidence Medium, signature_severity Major, updated_at 2025_09_02, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer;
    target:dest_ip;
)

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