ET MALWARE Gamaredon File Stealer POST

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Gamaredon File Stealer POST";
    flow:to_server,established;
    http.method;
    content:"POST";
    http.request_body;
    content:"form-data|3b 20|name=|22|filename|22|"; nocase;
    content:"form-data|3b 20|name=|22|compname|22|"; distance:0; nocase;
    content:"form-data|3b 20|name=|22|serial|22|"; distance:0; nocase; fast_pattern;
    content:"form-data|3b 20|name=|22|w|22|"; distance:0; nocase;
    content:"form-data|3b 20|name=|22|filesize|22|"; distance:0; nocase;
    content:"form-data|3b 20|name=|22|file|22|"; distance:0; nocase;
    http.content_type;
    content:"multipart/form-data|3b|"; startswith;
    http.header_names;
    content:!"User-Agent|0d 0a|";
    reference:md5,1a81516780c2c5a966261cc47478133c;
    reference:url,researchcenter.paloaltonetworks.com/2017/02/unit-42-title-gamaredon-group-toolset-evolution/;
    classtype:trojan-activity;
    sid:2024027; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_28, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Minor, updated_at 2020_08_04;
)