ET MALWARE Babax Stealer Exfil via Telegram

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /bot"; startswith;
content:"/sendDocument?chat_id="; distance:0;
content:"&caption=%E2%98%A0%EF%B8%8F%20Brought%20you%20by%20Babax"; fast_pattern;
http.host; bsize:16;
content:"api.telegram.org";
http.request_body;
content:"|2e|logs|22 0d 0a|Content-Type|3a 20|application/x-ms-dos-executable|0d 0a 0d 0a|PK";
Raw source ET MALWARE Babax Stealer 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 Babax Stealer Exfil via Telegram";
    flow:established,to_server;
    http.request_line;
    content:"POST /bot"; startswith;
    content:"/sendDocument?chat_id="; distance:0;
    content:"&caption=%E2%98%A0%EF%B8%8F%20Brought%20you%20by%20Babax"; fast_pattern;
    http.host; bsize:16;
    content:"api.telegram.org";
    http.request_body;
    content:"|2e|logs|22 0d 0a|Content-Type|3a 20|application/x-ms-dos-executable|0d 0a 0d 0a|PK";
    reference:md5,7413dfd6fc0eed1927e1d44c23b80571;
    reference:url,twitter.com/Pyhoma07/status/1279758745560584195;
    classtype:command-and-control;
    sid:2030805; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_08_27, deployment Perimeter, deployment SSLDecrypt, malware_family Babax, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_27;
)

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