ET MALWARE ArigonStealer CnC Exfil via Telegram (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.host;
content:"api.telegram.org";
http.uri;
content:"|2f|bot"; startswith;
content:"|2f|sendDocument"; endswith;
http.user_agent;
content:"Stealer";
http.request_body;
content:"filename|3d 22|stolen|5f|data|2e|zip|22|"; fast_pattern;
target:src_ip;
Raw source ET MALWARE ArigonStealer CnC Exfil via Telegram (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 ArigonStealer CnC Exfil via Telegram (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.host;
    content:"api.telegram.org";
    http.uri;
    content:"|2f|bot"; startswith;
    content:"|2f|sendDocument"; endswith;
    http.user_agent;
    content:"Stealer";
    http.request_body;
    content:"filename|3d 22|stolen|5f|data|2e|zip|22|"; fast_pattern;
    reference:md5,a96c054aec2582369e8cae63e50de2f2;
    classtype:command-and-control;
    sid:2065780; 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_11_14, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_14, 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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