ET HUNTING Curl User-Agent Observed to Telegram

Query · suricata

flow:established,to_server;
http.user_agent;
content:"curl/"; startswith;
http.host;
content:"api.telegram.org"; fast_pattern;
Raw source ET HUNTING Curl User-Agent Observed to 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 HUNTING Curl User-Agent Observed to Telegram";
    flow:established,to_server;
    http.user_agent;
    content:"curl/"; startswith;
    http.host;
    content:"api.telegram.org"; fast_pattern;
    reference:md5,ae6eeaa09f5fa4c937928430c397b1ff;
    reference:url,www.trendmicro.com/en_us/research/21/f/bash-ransomware-darkradiation-targets-red-hat--and-debian-based-linux-distributions.html;
    classtype:unknown;
    sid:2044617; rev:1;
    metadata:created_at 2023_03_14, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_14;
)

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