ET MALWARE TerraStealerV2 New Victim Checkin via Telegram API

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE TerraStealerV2 New Victim Checkin via Telegram API";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/sendMessage|3f|chat|5f|id|3d|";
    http.host; bsize:16;
    content:"api.telegram.org";
    http.request_body;
    content:"chat_id="; startswith;
    content:"|25|2A|25|2ANew|25|20User|25|20Ran|25|20the|25|20Application|25|2A|25|2A"; fast_pattern;
    content:"Username|25|3A|25|2A|25|2A|25|20"; distance:0;
    content:"PC|25|20Name|25|3A|25|2A|25|2A|25|20"; distance:0;
    content:"IP|25|20Address|25|3A|25|2A|25|2A|25|20"; distance:0;
    reference:url,go.recordedfuture.com/hubfs/reports/cta-2025-0501.pdf;
    reference:url,community.emergingthreats.net/t/sigs-terrastealerv2/2695;
    classtype:command-and-control;
    sid:2062074; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_05_02, deployment Perimeter, deployment SSLDecrypt, malware_family TerraStealer, confidence High, signature_severity Critical, tag c2, updated_at 2025_05_02, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)