ET MALWARE Possible Linux DarkRadiation Ransomware Telegram Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/sendMessage?chat_id="; distance:0; fast_pattern;
content:"&"; endswith;
http.user_agent;
content:"curl/"; startswith;
http.request_body;
content:"text="; startswith;
threshold:type limit, count 1, seconds 120, track by_src;
Raw source ET MALWARE Possible Linux DarkRadiation Ransomware Telegram Activity · 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 Possible Linux DarkRadiation Ransomware Telegram Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/sendMessage?chat_id="; distance:0; fast_pattern;
    content:"&"; endswith;
    http.user_agent;
    content:"curl/"; startswith;
    http.request_body;
    content:"text="; startswith;
    threshold:type limit, count 1, seconds 120, track by_src;
    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:trojan-activity;
    sid:2044618; rev:1;
    metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2023_03_14, deployment Perimeter, performance_impact Low, confidence Low, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_14, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)

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