ET MALWARE Snake/Best Private Keylogger CnC Exfil Via Telegram

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Snake/Best Private Keylogger CnC Exfil Via Telegram";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/bot";
    content:"/sendDocument?chat_id="; distance:0;
    content:"&caption="; distance:0;
    http.host; bsize:16;
    content:"api.telegram.org";
    http.request_body;
    content:"************************";
    content:"|20 42 65 73 74|"; distance:0;
    content:"|20 50 72 69 76 61 74 65 20|"; fast_pattern; distance:0;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    reference:url,malpedia.caad.fkie.fraunhofer.de/details/win.404keylogger;
    classtype:command-and-control;
    sid:2057744; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_11_20, deployment Perimeter, malware_family Snake_Keylogger, malware_family Best_Private, confidence High, signature_severity Major, tag c2, tag Logger, updated_at 2024_11_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)