ET MALWARE Win32/Arkei Stealer CnC Checkin (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Arkei Stealer CnC Checkin (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/tratata.php"; startswith; bsize:12; fast_pattern;
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    http.header;
    content:"Cache-Control: no-cache";
    reference:url,blogs.blackberry.com/en/2022/02/threat-thursday-arkei-infostealer?utm_medium=social&utm_source=bambu;
    classtype:trojan-activity;
    sid:2035393; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_03, deployment Perimeter, malware_family Arkei, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_03, reviewed_at 2024_06_26;
)