ET MALWARE Win32/NewsRat CnC Exfil via Telegram (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/bot"; startswith;
content:"|2f|sendDocument|3f|chat|5f|id|3d|";
http.host;
content:"api.telegram.org";
http.request_body;
content:"filename|3d 22|C|3a 5c|ProgramData|5c|Time"; fast_pattern;
content:"|50 4b 03 04|";
content:"chomeDefault.txt";
content:"cookies_fb.txt";
content:"edgeDefault.txt";
Raw source ET MALWARE Win32/NewsRat 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 Win32/NewsRat CnC Exfil via Telegram (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/bot"; startswith;
    content:"|2f|sendDocument|3f|chat|5f|id|3d|";
    http.host;
    content:"api.telegram.org";
    http.request_body;
    content:"filename|3d 22|C|3a 5c|ProgramData|5c|Time"; fast_pattern;
    content:"|50 4b 03 04|";
    content:"chomeDefault.txt";
    content:"cookies_fb.txt";
    content:"edgeDefault.txt";
    reference:md5,a2ccca25a57f7c333793be885fbaabd5;
    reference:url,twitter.com/suyog41/status/1694238749688049738;
    classtype:trojan-activity;
    sid:2047716; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_08_23, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_NewsRat, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_23, reviewed_at 2023_08_23;
)

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