ET MALWARE Win32/WhiskerSpy - Key Material Upload

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/WhiskerSpy - Key Material Upload";
    flow:established,to_server;
    http.request_body;
    content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|0|22 0d 0a 0d 0a|1|0d 0a|";
    content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|1|22 0d 0a 0d 0a|l";
    content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|a|22 3b 20|filename|3d 22|a|22 0d 0a|Content|2d|Type|3a 20|application|2f|octet|2d|stream|0d 0a 0d 0a|"; fast_pattern;
    content:"|0d 0a 2d 2d|"; distance:64; within:4;
    reference:md5,8fb3695d1487b55aaf380190a0524098;
    reference:url,trendmicro.com/en_us/research/23/b/earth-kitsune-delivers-new-whiskerspy-backdoor.html;
    classtype:command-and-control;
    sid:2044251; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_20, deployment Perimeter, deployment SSLDecrypt, malware_family WhiskerSpy, performance_impact Low, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_20;
    target:src_ip;
)