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ja4

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Signed-off-by: reyesj2 <94730068+reyesj2@users.noreply.github.com>
This commit is contained in:
reyesj2
2025-07-16 15:56:34 -05:00
parent a037421809
commit b3eb06f53e
8 changed files with 93 additions and 0 deletions
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4
salt/elasticsearch/files/ingest/zeek.conn
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@@ -24,6 +24,10 @@
{ "rename": { "field": "message2.resp_cc", "target_field": "server.country_code", "ignore_missing": true } },
{ "rename": { "field": "message2.sensorname", "target_field": "observer.name", "ignore_missing": true } },
{ "rename": { "field": "message2.vlan", "target_field": "network.vlan.id", "ignore_missing": true } },
{ "rename": { "field": "message2.ja4l", "target_field": "hash.ja4l", "ignore_missing" : true }},
{ "rename": { "field": "message2.ja4ls", "target_field": "hash.ja4ls", "ignore_missing" : true }},
{ "rename": { "field": "message2.ja4t", "target_field": "hash.ja4t", "ignore_missing" : true }},
{ "rename": { "field": "message2.ja4ts", "target_field": "hash.ja4ts", "ignore_missing" : true }},
{ "script": { "lang": "painless", "source": "ctx.network.bytes = (ctx.client.bytes + ctx.server.bytes)", "ignore_failure": true } },
{ "set": { "if": "ctx.connection?.state == 'S0'", "field": "connection.state_description", "value": "Connection attempt seen, no reply" } },
{ "set": { "if": "ctx.connection?.state == 'S1'", "field": "connection.state_description", "value": "Connection established, not terminated" } },

1
salt/elasticsearch/files/ingest/zeek.http
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@@ -27,6 +27,7 @@
{ "rename": { "field": "message2.resp_fuids", "target_field": "log.id.resp_fuids", "ignore_missing": true } },
{ "rename": { "field": "message2.resp_filenames", "target_field": "file.resp_filenames", "ignore_missing": true } },
{ "rename": { "field": "message2.resp_mime_types", "target_field": "file.resp_mime_types", "ignore_missing": true } },
{ "rename": { "field": "message2.ja4h", "target_field": "hash.ja4h", "ignore_missing": true } },
{ "script": { "lang": "painless", "source": "ctx.uri_length = ctx.uri.length()", "ignore_failure": true } },
{ "script": { "lang": "painless", "source": "ctx.useragent_length = ctx.useragent.length()", "ignore_failure": true } },
{ "script": { "lang": "painless", "source": "ctx.virtual_host_length = ctx.virtual_host.length()", "ignore_failure": true } },

1
salt/elasticsearch/files/ingest/zeek.http2
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@@ -27,6 +27,7 @@
{ "rename": { "field": "message2.resp_filenames", "target_field": "file.resp_filenames", "ignore_missing": true } },
{ "rename": { "field": "message2.resp_mime_types", "target_field": "file.resp_mime_types", "ignore_missing": true } },
{ "rename": { "field": "message2.stream_id", "target_field": "http2.stream_id", "ignore_missing": true } },
{ "rename": { "field": "message2.ja4h", "target_field": "hash.ja4h", "ignore_missing": true } },
{ "remove": { "field": "message2.tags", "ignore_failure": true } },
{ "remove": { "field": ["host"], "ignore_failure": true } },
{ "script": { "lang": "painless", "source": "ctx.uri_length = ctx.uri.length()", "ignore_failure": true } },

10
salt/elasticsearch/files/ingest/zeek.ja4ssh Normal file
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@@ -0,0 +1,10 @@
{
"description": "zeek.ja4ssh",
"processors": [
{"set": {"field": "event.dataset","value": "ja4ssh"}},
{"remove": {"field": "host","ignore_missing": true,"ignore_failure": true}},
{"json": {"field": "message","target_field": "message2","ignore_failure": true}},
{"rename": {"field": "message2.ja4ssh", "target_field": "ja4.ja4ssh", "ignore_missing": true}},
{"pipeline": {"name": "zeek.common"}}
]
}

2
salt/elasticsearch/files/ingest/zeek.ssl
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@@ -23,6 +23,8 @@
{ "rename": { "field": "message2.validation_status","target_field": "ssl.validation_status", "ignore_missing": true } },
{ "rename": { "field": "message2.ja3", "target_field": "hash.ja3", "ignore_missing": true } },
{ "rename": { "field": "message2.ja3s", "target_field": "hash.ja3s", "ignore_missing": true } },
{ "rename": { "field": "message2.ja4", "target_field": "hash.ja4", "ignore_missing": true } },
{ "rename": { "field": "message2.ja4s", "target_field": "hash.ja4s", "ignore_missing": true } },
{ "foreach":
{
"if": "ctx?.tls?.client?.hash?.sha256 !=null",

1
salt/elasticsearch/files/ingest/zeek.x509
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@@ -42,6 +42,7 @@
{ "dot_expander": { "field": "basic_constraints.path_length", "path": "message2", "ignore_failure": true } },
{ "rename": { "field": "message2.basic_constraints.path_length", "target_field": "x509.basic_constraints.path_length", "ignore_missing": true } },
{ "rename": { "field": "message2.fingerprint", "target_field": "hash.sha256", "ignore_missing": true } },
{ "rename": { "field": "message2.ja4x", "target_field": "hash.ja4x", "ignore_missing": true } },
{ "pipeline": { "name": "zeek.common_ssl" } }
]
}