ET MALWARE Angry Stealer Data Exfiltration Attempt

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Angry Stealer Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/bot"; startswith;
    content:"/sendDocument?chat_id="; within:100;
    content:"&caption="; within:40;
    content:"Angry|20|Stealer"; fast_pattern;
    http.host; bsize:16;
    content:"api.telegram.org";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|document|22 3b 20|filename|3d 22|";
    pcre:"/\x5cAppData\x5cLocal\x2f\x2f[A-Z]{2}\x5b\d{2}-\d{2}-\d{4}\x5d-\d{2,3}\x2e\d{2,3}\x2e\d{2,3}\x2e\d{2,3}-[A-Za-z]{9}\x2ezip\x22/R";
    content:"44_23/Information.txt"; within:200;
    reference:url,www.cyfirma.com/research/a-comprehensive-analysis-of-angry-stealer-rage-stealer-in-a-new-disguise/;
    reference:md5,56a579cb88eb4bb93a45b163ab9825d8;
    classtype:trojan-activity;
    sid:2055724; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_09_04, deployment Perimeter, deployment SSLDecrypt, malware_family Angry_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_09_04;
    target:src_ip;
)