ET MALWARE Win32/FireStealer Related Activity M2 (POST)

Query · suricata

flow:established,to_server;
urilen:1;
http.method;
content:"POST";
http.content_type;
content:"application/json"; bsize:16;
http.header_names;
content:!"Referer|0d 0a|";
http.request_body;
content:"|7b 22|name|22 3a 22|"; depth:24;
content:"|22 2c 22|title|22 3a 22|grabg|3a 3a|"; distance:0; fast_pattern;
target:src_ip;
Raw source ET MALWARE Win32/FireStealer Related Activity M2 (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/FireStealer Related Activity M2 (POST)";
    flow:established,to_server;
    urilen:1;
    http.method;
    content:"POST";
    http.content_type;
    content:"application/json"; bsize:16;
    http.header_names;
    content:!"Referer|0d 0a|";
    http.request_body;
    content:"|7b 22|name|22 3a 22|"; depth:24;
    content:"|22 2c 22|title|22 3a 22|grabg|3a 3a|"; distance:0; fast_pattern;
    reference:md5,03f80949b6a0d5148c4e0d0557175131;
    classtype:trojan-activity;
    sid:2051908; 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 plaintext, created_at 2024_04_03, deployment Perimeter, malware_family Win32_FireStealer, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03;
    target:src_ip;
)

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