ET MALWARE Linux DarkRadiation Ransomware Telegram Activity M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Linux DarkRadiation Ransomware Telegram Activity M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/sendMessage?chat_id=";
    content:"&"; endswith;
    http.user_agent;
    content:"curl/"; startswith;
    http.request_body;
    content:"text="; startswith;
    content:"%3A+encrypt+"; distance:0; fast_pattern;
    pcre:"/^(?:PASS|HOME|DATABASE|SSH KEYS|grep)\+files\+(?:started|Done\.\+Delete\+files)\.$/R";
    threshold:type limit, count 1, seconds 120, track by_src;
    reference:md5,219202aa2355b68ee4ea61056fb13b37;
    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:2044616; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_03_14, deployment Perimeter, confidence High, 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;
)