ET MALWARE Win32/Girostat Stealer (POST)


Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.content_type;
content:"multipart/form-data|3b 20|boundary=---------------------------"; startswith;
http.request_body;
content:"name=|22|info|22 0d 0a|";
content:"name=|22|debug1|22 0d 0a|"; distance:0;
content:"name=|22|debug2|22 0d 0a|"; fast_pattern;
content:"filename=|22|"; distance:0;
http.header_names;
content:!"Referer";
content:!"Accept";
Raw source ET MALWARE Win32/Girostat Stealer (POST) · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged.
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Girostat Stealer (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.content_type;
    content:"multipart/form-data|3b 20|boundary=---------------------------"; startswith;
    http.request_body;
    content:"name=|22|info|22 0d 0a|";
    content:"name=|22|debug1|22 0d 0a|"; distance:0;
    content:"name=|22|debug2|22 0d 0a|"; fast_pattern;
    content:"filename=|22|"; distance:0;
    http.header_names;
    content:!"Referer";
    content:!"Accept";
    reference:md5,934058124782476cdbe7866c4ceed167;
    classtype:trojan-activity;
    sid:2032319; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_03_24, deployment Perimeter, malware_family Win32_Girostat, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_24;
)

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