ET MALWARE Win32/Vector Stealer Sending System Information via Telegram (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Vector Stealer Sending System Information via Telegram (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/bot"; startswith;
    http.host;
    content:"api.telegram.org"; bsize:16;
    http.request_body;
    content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d|document|3b 20|filename|3d|";
    content:"|2d|dump|2e|txt|0d 0a 0d 0a|Username|3a 20|"; distance:0;
    content:"|0d 0a|Machine Name|3a 20|"; distance:0;
    content:"|0d 0a|OS|3a 20|"; distance:0;
    content:"|0d 0a|Bits|3a 20|"; distance:0;
    content:"|20|Bit|0d 0a|Antivirus|28|s|29 20|active|3a 20|"; distance:2; within:27; fast_pattern;
    reference:md5,24f2bf961c5ebc9007ba75b6f029388b;
    reference:url,twitter.com/James_inthe_box/status/1633503622381322242;
    classtype:trojan-activity;
    sid:2044527; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2023_03_08, deployment Perimeter, deployment SSLDecrypt, malware_family VectorStealer, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_26, reviewed_at 2023_11_28;
    target:src_ip;
)