ET MALWARE Stealerium CnC Exfil via Discord (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/api/webhook"; startswith;
http.host;
content:"discord.com"; endswith;
http.request_body;
content:"|f0 9f 98 b9 20 2a|Stealerium|20 2d 20|Report|3a 2a|"; fast_pattern;
target:src_ip;
Raw source ET MALWARE Stealerium CnC Exfil via Discord (POST) · 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 Stealerium CnC Exfil via Discord (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/api/webhook"; startswith;
    http.host;
    content:"discord.com"; endswith;
    http.request_body;
    content:"|f0 9f 98 b9 20 2a|Stealerium|20 2d 20|Report|3a 2a|"; fast_pattern;
    reference:url,github.com/witchfindertr/Stealerium;
    classtype:trojan-activity;
    sid:2063893; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_08_04, deployment Perimeter, deployment SSLDecrypt, malware_family Stealerium, confidence High, signature_severity Critical, tag c2, updated_at 2025_08_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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