ET MALWARE Golang/Bandit Stealer Telegram Exfil Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.host;
content:"api.telegram.com"; bsize:16; fast_pattern;
http.user_agent;
content:"go-http-client/"; startswith; nocase;
http.request_body;
content:"Banditstealer";
content:"PK"; distance:0;
target:src_ip;
Raw source ET MALWARE Golang/Bandit Stealer Telegram Exfil Activity (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 Golang/Bandit Stealer Telegram Exfil Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.host;
    content:"api.telegram.com"; bsize:16; fast_pattern;
    http.user_agent;
    content:"go-http-client/"; startswith; nocase;
    http.request_body;
    content:"Banditstealer";
    content:"PK"; distance:0;
    reference:md5,caf4884072724f1d75a6288f27e8e8fe;
    reference:md5,4ab55868b65dc8f16d9d62edfd1893fa;
    reference:url,www.zscaler.com/blogs/security-research/technical-analysis-bandit-stealer;
    classtype:trojan-activity;
    sid:2046856; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_07_18, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_18;
    target:src_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.