ja4

Signed-off-by: reyesj2 <94730068+reyesj2@users.noreply.github.com>

salt/elasticsearch/defaults.yaml

@@ -567,6 +567,7 @@ elasticsearch:
         - common-settings
         - common-dynamic-mappings
         - winlog-mappings
+        - hash-mappings
         data_stream: {}
         ignore_missing_component_templates: []
         index_patterns:
@@ -3874,6 +3875,7 @@ elasticsearch:
         - vulnerability-mappings
         - common-settings
         - common-dynamic-mappings
+        - hash-mappings
         data_stream: {}
         ignore_missing_component_templates: []
         index_patterns:
@@ -3987,6 +3989,7 @@ elasticsearch:
         - vulnerability-mappings
         - common-settings
         - common-dynamic-mappings
+        - hash-mappings
         data_stream: {}
         ignore_missing_component_templates: []
         index_patterns:
@@ -4100,6 +4103,7 @@ elasticsearch:
         - vulnerability-mappings
         - common-settings
         - common-dynamic-mappings
+        - hash-mappings
         data_stream: {}
         ignore_missing_component_templates: []
         index_patterns:
@@ -4329,6 +4333,7 @@ elasticsearch:
         - zeek-mappings
         - common-settings
         - common-dynamic-mappings
+        - hash-mappings
         data_stream: {}
         ignore_missing_component_templates: []
         index_patterns:

salt/elasticsearch/files/ingest/zeek.conn

@@ -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" } },

salt/elasticsearch/files/ingest/zeek.http

@@ -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	} },

salt/elasticsearch/files/ingest/zeek.http2

@@ -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 	} },

salt/elasticsearch/files/ingest/zeek.ja4ssh

@@ -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"}}
+  ]
+}

salt/elasticsearch/files/ingest/zeek.ssl

@@ -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",

salt/elasticsearch/files/ingest/zeek.x509

@@ -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"                                                                                                             } }
   ]
 }

salt/elasticsearch/templates/component/ecs/hash.json

@@ -0,0 +1,69 @@
+{
+  "template": {
+    "mappings": {
+      "properties": {
+        "hash": {
+          "type": "object",
+          "properties": {
+            "ja3": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja3s": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "hassh": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "md5": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "sha1": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "sha256": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4l": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4ls": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4t": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4ts": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4ssh": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4h": {
+              "type": "keyword",
+              "ignore_above": 1024
+            },
+            "ja4x": {
+              "type": "keyword",
+              "ignore_above": 1024
+            }
+          }
+        }
+      }
+    }
+  }
+}