✄𐘗
text code block:
✄𐘗from
  logs-nginx.access-*,
  logs-apache.access-*,
  logs-apache_tomcat.access-*,
  logs-iis.access-*
| where
    http.request.method == "GET" and
    http.response.status_code == 200 and
    url.original like "*=*"

| eval Esql.url_original_url_decoded_to_lower = to_lower(URL_DECODE(url.original))

| where
  /* 1) Relative traversal */
    Esql.url_original_url_decoded_to_lower like "*../../../../*" or           // Unix-style traversal
    Esql.url_original_url_decoded_to_lower like "*..\\\\..\\\\..\\\\..*" or           // Windows-style traversal
    // Potential security check bypassing (enforcing multiple dots and shortening the pattern)
    Esql.url_original_url_decoded_to_lower like "*..././*" or
    Esql.url_original_url_decoded_to_lower like "*...\\*" or
    Esql.url_original_url_decoded_to_lower like "*....\\*" or

  /* 2) Linux system identity / basic info */
    Esql.url_original_url_decoded_to_lower like "*etc/passwd*" or
    Esql.url_original_url_decoded_to_lower like "*etc/shadow*" or
    Esql.url_original_url_decoded_to_lower like "*etc/hosts*" or
    Esql.url_original_url_decoded_to_lower like "*etc/os-release*" or
    Esql.url_original_url_decoded_to_lower like "*etc/issue*" or

  /* 3) Linux /proc enumeration */
    Esql.url_original_url_decoded_to_lower like "*proc/self/environ*" or
    Esql.url_original_url_decoded_to_lower like "*proc/self/cmdline*" or
    Esql.url_original_url_decoded_to_lower like "*proc/self/fd*" or
    Esql.url_original_url_decoded_to_lower like "*proc/self/exe*" or

  /* 4) Linux webroots, configs & logs */
    Esql.url_original_url_decoded_to_lower like "*var/www*" or               // generic webroot
    Esql.url_original_url_decoded_to_lower like "*wp-config.php*" or         // classic WP config
    Esql.url_original_url_decoded_to_lower like "*etc/apache2*" or
    Esql.url_original_url_decoded_to_lower like "*etc/httpd*" or
    Esql.url_original_url_decoded_to_lower like "*etc/nginx*" or
    Esql.url_original_url_decoded_to_lower like "*var/log/apache2*" or
    Esql.url_original_url_decoded_to_lower like "*var/log/httpd*" or
    Esql.url_original_url_decoded_to_lower like "*var/log/nginx*" or

  /* 5) Windows core files / identity */
    Esql.url_original_url_decoded_to_lower like "*windows/panther/*unattend*" or
    Esql.url_original_url_decoded_to_lower like "*windows/debug/netsetup.log*" or
    Esql.url_original_url_decoded_to_lower like "*windows/win.ini*" or
    Esql.url_original_url_decoded_to_lower like "*windows/system32/drivers/etc/hosts*" or
    Esql.url_original_url_decoded_to_lower like "*boot.ini*" or
    Esql.url_original_url_decoded_to_lower like "*windows/system32/config/*" or
    Esql.url_original_url_decoded_to_lower like "*windows/repair/sam*" or
    Esql.url_original_url_decoded_to_lower like "*windows/system32/license.rtf*" or

  /* 6) Windows IIS / .NET configs, webroots & logs */
     Esql.url_original_url_decoded_to_lower like "*/inetpub/wwwroot*" or
     Esql.url_original_url_decoded_to_lower like "*/inetpub/logs/logfiles*" or
     Esql.url_original_url_decoded_to_lower like "*applicationhost.config*" or
     Esql.url_original_url_decoded_to_lower like "*/microsoft.net/framework64/*/config/web.config*" or
     Esql.url_original_url_decoded_to_lower like "*windows/system32/inetsrv/*" or

  /* 7) PHP & protocol wrappers */
     Esql.url_original_url_decoded_to_lower like "*php://*" or
     Esql.url_original_url_decoded_to_lower like "*zip://*" or
     Esql.url_original_url_decoded_to_lower like "*phar://*" or
     Esql.url_original_url_decoded_to_lower like "*expect://*" or
     Esql.url_original_url_decoded_to_lower like "*file://*" or
     Esql.url_original_url_decoded_to_lower like "*data://text/plain;base64*"

| keep
    @timestamp,
    Esql.url_original_url_decoded_to_lower,
    source.ip,
    agent.id,
    host.name,
    http.request.method,
    http.response.status_code,
    event.dataset,
    data_stream.namespace

| stats
    Esql.event_count = count(),
    Esql.url_original_url_decoded_to_lower_count_distinct = count_distinct(Esql.url_original_url_decoded_to_lower),
    Esql.host_name_values = values(host.name),
    Esql.agent_id_values = values(agent.id),
    Esql.http_request_method_values = values(http.request.method),
    Esql.http_response_status_code_values = values(http.response.status_code),
    Esql.url_original_url_decoded_to_lower_values = values(Esql.url_original_url_decoded_to_lower),
    Esql.event_dataset_values = values(event.dataset),
    Esql.data_stream_namespace_values = values(data_stream.namespace)
    by source.ip