ET MALWARE Elusive Stealer CnC Exfil via Telegram

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/sendDocument"; endswith;
http.host;
content:"api.telegram.org"; bsize:16;
http.request_body;
content:"name|3d 22|chat|5f|id|22 0d 0a|";
content:"name|3d 22|caption|22 0d 0a|";
content:"ElusiveReadme.txt"; fast_pattern;
Raw source ET MALWARE Elusive Stealer CnC Exfil via Telegram · 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 Elusive Stealer CnC Exfil via Telegram";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/sendDocument"; endswith;
    http.host;
    content:"api.telegram.org"; bsize:16;
    http.request_body;
    content:"name|3d 22|chat|5f|id|22 0d 0a|";
    content:"name|3d 22|caption|22 0d 0a|";
    content:"ElusiveReadme.txt"; fast_pattern;
    reference:md5,0f00b9d4f63ec99dc4bb6dd729811e9a;
    reference:url,twitter.com/suyog41/status/1760168286711677328;
    classtype:trojan-activity;
    sid:2051071; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_02_22, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_22;
)

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