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670 lines (669 loc) · 22 KB
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{
"$id": "http://example.com/example.json",
"$schema": "http://json-schema.org/draft-07/schema",
"additionalProperties": true,
"description": "schema for ba detections",
"properties": {
"name": {
"$id": "#/properties/name",
"default": "",
"examples": [
"Anomalous usage of Archive Tools"
],
"title": "Name of detection",
"type": "string"
},
"id": {
"$id": "#/properties/id",
"default": "",
"description": "UUID as unique identifier",
"examples": [
"fb4c31b0-13e8-4155-8aa5-24de4b8d6717"
],
"type": "string"
},
"version": {
"$id": "#/properties/version",
"default": 0,
"description": "version of detection, e.g. 1 or 2 ...",
"examples": [
1
],
"type": "integer"
},
"status": {
"$id": "#/properties/status",
"default": "production",
"description": "status of detection: production or validation",
"examples": [
1
],
"type": "string"
},
"description": {
"$id": "#/properties/description",
"default": "",
"description": "A detailed description of the detection",
"examples": [
"The following detection identifies the usage of archive tools from the command line."
],
"type": "string"
},
"search": {
"$id": "#/properties/search",
"default": "",
"description": "The Splunk search for the detection",
"examples": [
"| from read_ba_enriched_events()"
],
"type": "string"
},
"how_to_implement": {
"$id": "#/properties/how_to_implement",
"default": "",
"description": "information about how to implement.",
"examples": [
"Ingest Windows Event Code 4688 with Command Line Logging enabled."
],
"type": "string"
},
"known_false_positives": {
"$id": "#/properties/knwon_false_positives",
"default": "",
"description": "known false postives",
"examples": [
"False positives can be ligitmate usage of archive tools from the command line."
],
"type": "string"
},
"references": {
"$id": "#/properties/references",
"additionalItems": true,
"default": [],
"description": "A list of references for this detection",
"examples": [
[
"https://attack.mitre.org/techniques/T1560/001/"
]
],
"items": {
"$id": "#/properties/references/items",
"default": "",
"description": "Link to reference",
"examples": [
"https://attack.mitre.org/techniques/T1560/001/"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
},
"runtime": {
"$id": "#/properties/runtime",
"default": "",
"description": "runtime for BA detection",
"examples": [
"SPL2"
],
"items": {
"enum": [
"DSP-SPL",
"SPL2",
"Spark"
],
"type": "string"
},
"type": "string"
},
"detection_type": {
"$id": "#/properties/detection_type",
"default": "",
"description": "type of detection",
"examples": [
"Rule"
],
"items": {
"enum": [
"Rule",
"ML"
],
"type": "string"
},
"type": "string"
},
"job_params": {
"$id": "#/properties/job_params",
"additionalProperties": true,
"default": "",
"description": "job parameters",
"examples": [
{
"entrypointClassName": "com.splunk.ssa.batch.poc.BatchEntryPoint",
"modelsJarFileName": "batch-models.jar"
}
],
"type": "object"
},
"model_params": {
"$id": "#/properties/model_params",
"additionalProperties": true,
"default": "",
"description": "model parameters",
"examples": [
{
"modelClassName": "com.splunk.ssa.batch.poc.models.DeviceAccessRareModel",
"lookBackPeriodInDays": 30
}
],
"type": "object"
},
"tags": {
"$id": "#/properties/tags",
"additionalProperties": true,
"default": {},
"description": "An array of key value pairs for tagging",
"examples": [
{
"annotations": {"analytic_story": ["NOBELIUM Group"], "cis20": ["CIS 10"], "kill_chain_phases": ["Exploitation"], "mitre_attack_id": ["T1560.001", "T1560"], "nist": ["DE.AE"]},
"ocsf_attributes": {"activity_id": 1, "category_uid": 2, "class_uid": 102001, "risk_level_id": 2, "risk_score": 42, "severity_id": 0, "rule": {"name": "Anomalous usage of Archive Tools", "uid": "63614a58-10e2-4c6c-ae81-ea1113681439", "type": "Streaming"}, "metadata": {"product": {"name": "Behavior Analytics", "vendor_name": "Splunk"}, "version": "1.0.0-rc.2"}, "type_uid": 10200101},
"required_fields": ["process.user.name", "device.hostname"],
"risk_score": 42,
"security_domain": "endpoint",
"risk_severity": "low",
"research_site_url": "https://research.splunk.com/endpoint/63614a58-10e2-4c6c-ae81-ea1113681439/",
"event_schema": "ocsf",
"mappings": [{"ocsf": "process.user.name", "cim": "user"},{"ocsf": "device.hostname", "cim": "dest"}]
}
],
"type": "object",
"uniqueItems": true,
"required": [
"annotations",
"risk_score",
"security_domain",
"risk_severity",
"research_site_url",
"event_schema",
"mappings"
],
"properties": {
"annotations": {
"$id": "#/properties/tags/annotations",
"additionalProperties": true,
"default": {},
"description": "An array of key value pairs for annotations",
"examples": [
{
"analytic_story": ["NOBELIUM Group"],
"cis20": ["CIS 10"],
"kill_chain_phases": ["Exploitation"],
"mitre_attack_id": ["T1560.001"],
"nist": ["DE.AE"]
}
],
"type": "object",
"uniqueItems": true,
"required": [
"analytic_story",
"cis20",
"kill_chain_phases",
"mitre_attack_id",
"nist"
],
"properties": {
"analytic_story": {
"$id": "#/properties/tags/annotations/analytic_story",
"additionalItems": true,
"default": [],
"description": "A list of analytic stories for this detection",
"examples": [
[
"NOBELIUM Group"
]
],
"items": {
"$id": "#/properties/tags/annotations/analytic_story/items",
"default": "",
"description": "analytic story name",
"examples": [
"NOBELIUM Group"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
},
"cis20": {
"$id": "#/properties/tags/annotations/cis20",
"additionalItems": true,
"default": [],
"description": "cis tags",
"examples": [
["CIS 10"]
],
"items": {
"$id": "#/properties/tags/annotations/cis20/items",
"default": "",
"description": "cis tag",
"examples": [
"CIS 10"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
},
"kill_chain_phases": {
"$id": "#/properties/tags/annotations/kill_chain_phases",
"additionalItems": true,
"default": [],
"description": "kill_chain_phases",
"examples": [
["Exploitation"]
],
"items": {
"$id": "#/properties/tags/annotations/kill_chain_phases/items",
"default": "",
"description": "kill_chain_phase",
"examples": [
"Exploitation"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
},
"mitre_attack_id": {
"$id": "#/properties/tags/annotations/mitre_attack_id",
"additionalItems": true,
"default": [],
"description": "mitre_attack_id",
"examples": [
["T1560.001", "T1560"]
],
"items": {
"$id": "#/properties/tags/annotations/mitre_attack_id/items",
"default": "",
"description": "kill_chain_phase",
"examples": [
"T1560.001"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
},
"nist": {
"$id": "#/properties/tags/annotations/nist",
"additionalItems": true,
"default": [],
"description": "nist array",
"examples": [
["DE.AE"]
],
"items": {
"$id": "#/properties/tags/annotations/nist/items",
"default": "",
"description": "nist",
"examples": [
"DE.AE"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
}
}
},
"ocsf_attributes": {
"$id": "#/properties/tags/ocsf_attributes",
"additionalProperties": true,
"default": {},
"description": "An array of key value pairs for static ocsf attributes",
"examples": [
{
"activity_id": 1,
"category_uid": 2,
"class_uid": 102001,
"risk_level_id": 2,
"risk_score": 42,
"severity_id": 0,
"rule": {
"name": "Anomalous usage of Archive Tools",
"uid": "63614a58-10e2-4c6c-ae81-ea1113681439",
"type": "Streaming"
},
"metadata": {
"product": {
"name": "Behavior Analytics",
"vendor_name": "Splunk"
},
"version": "1.0.0-rc.2"
},
"type_uid": 10200101
}
],
"type": "object",
"uniqueItems": true,
"required": [
"activity_id",
"category_uid",
"class_uid",
"risk_level_id",
"risk_score",
"severity_id",
"rule",
"metadata",
"type_uid"
],
"properties": {
"activity_id": {
"$id": "#/properties/tags/ocsf_attributes/activity_id",
"default": 1,
"description": "activity_id",
"examples": [
1
],
"type": "integer"
},
"category_uid": {
"$id": "#/properties/tags/ocsf_attributes/category_uid",
"default": 2,
"description": "category_uid",
"examples": [
2
],
"type": "integer"
},
"class_uid": {
"$id": "#/properties/tags/ocsf_attributes/class_uid",
"default": 102001,
"description": "class_uid",
"examples": [
102001
],
"type": "integer"
},
"risk_level_id": {
"$id": "#/properties/tags/ocsf_attributes/risk_level_id",
"default": 2,
"description": "risk_level_id",
"examples": [
2
],
"type": "integer"
},
"risk_score": {
"$id": "#/properties/tags/ocsf_attributes/risk_score",
"default": 42,
"description": "risk_score",
"examples": [
42
],
"type": "integer"
},
"severity_id": {
"$id": "#/properties/tags/ocsf_attributes/severity_id",
"default": 0,
"description": "severity_id",
"examples": [
0
],
"type": "integer"
},
"rule": {
"$id": "#/properties/tags/ocsf_attributes/rule",
"additionalProperties": true,
"default": {},
"description": "rule object",
"examples": [
{
"name": "Anomalous usage of Archive Tools",
"uid": "63614a58-10e2-4c6c-ae81-ea1113681439",
"type": "Streaming"
}
],
"type": "object",
"uniqueItems": true,
"required": [
"name",
"uid"
],
"properties": {
"name": {
"$id": "#/properties/tags/ocsf_attributes/rule/name",
"default": "",
"description": "rule name",
"examples": [
"Anomalous usage of Archive Tools"
],
"type": "string"
},
"uid": {
"$id": "#/properties/tags/ocsf_attributes/rule/uid",
"default": "",
"description": "rule uid",
"examples": [
"63614a58-10e2-4c6c-ae81-ea1113681439"
],
"type": "string"
},
"type": {
"$id": "#/properties/tags/ocsf_attributes/rule/type",
"default": "",
"description": "rule type",
"examples": [
"Streaming"
],
"type": "string"
}
}
},
"metadata": {
"$id": "#/properties/tags/ocsf_attributes/metadata",
"additionalProperties": true,
"default": {},
"description": "metadata object",
"examples": [
{
"product": {
"name": "Behavior Analytics",
"vendor_name": "Splunk"
},
"version": "1.0.0-rc.2"
}
],
"type": "object",
"uniqueItems": true,
"required": [
"product",
"version"
],
"properties": {
"product": {
"$id": "#/properties/tags/ocsf_attributes/metadata/product",
"additionalProperties": true,
"default": {},
"description": "product object",
"examples": [
{
"name": "Behavior Analytics",
"vendor_name": "Splunk"
}
],
"type": "object",
"uniqueItems": true,
"required": [
"name",
"vendor_name"
],
"properties": {
"name": {
"$id": "#/properties/tags/ocsf_attributes/metadata/product/name",
"default": "",
"description": "product name",
"examples": [
"Behavior Analytics"
],
"type": "string"
},
"vendor_name": {
"$id": "#/properties/tags/ocsf_attributes/metadata/product/vendor_name",
"default": "",
"description": "vendor product name",
"examples": [
"Splunk"
],
"type": "string"
}
}
},
"version": {
"$id": "#/properties/tags/ocsf_attributes/metadata/version",
"default": "",
"description": "ocsf schema version",
"examples": [
"1.0.0-rc.2"
],
"type": "string"
}
}
},
"type_uid": {
"$id": "#/properties/tags/ocsf_attributes/type_uid",
"default": 10200101,
"description": "type_uid",
"examples": [
10200101
],
"type": "integer"
}
}
},
"required_fields": {
"$id": "#/properties/tags/required_fields",
"additionalItems": true,
"default": [],
"description": "required_fields",
"examples": [
["process.user.name", "device.hostname"]
],
"items": {
"$id": "#/properties/tags/required_fields/items",
"default": "",
"description": "required_fields name",
"examples": [
"process.user.name"
],
"title": "The Items Schema",
"type": "string"
},
"type": "array"
},
"risk_score": {
"$id": "#/properties/tags/risk_score",
"default": 50,
"description": "risk_score",
"examples": [
42
],
"type": "integer"
},
"security_domain": {
"$id": "#/properties/tags/security_domain",
"default": "",
"description": "security_domain",
"examples": [
"endpoint"
],
"type": "string"
},
"risk_severity": {
"$id": "#/properties/tags/risk_severity",
"default": "",
"description": "risk_severity",
"examples": [
"low"
],
"type": "string"
},
"research_site_url": {
"$id": "#/properties/tags/research_site_url",
"default": "",
"description": "research_site_url",
"examples": [
"https://research.splunk.com/endpoint/63614a58-10e2-4c6c-ae81-ea1113681439/"
],
"type": "string"
},
"event_schema": {
"$id": "#/properties/tags/event_schema",
"default": "",
"description": "event_schema",
"examples": [
"ocsf"
],
"type": "string"
},
"mappings": {
"$id": "#/properties/tags/mappings",
"default": [],
"description": "mappings array",
"examples": [
[{"ocsf": "process.user.name", "cim": "user"},{"ocsf": "device.hostname", "cim": "dest"}]
],
"items": {
"$id": "#/properties/tags/mappings/items",
"default": {},
"description": "mappings object",
"examples": [
{
"ocsf": "process.user.name",
"cim": "user"
}
],
"type": "object",
"uniqueItems": true,
"properties": {
"ocsf": {
"$id": "#/properties/tags/mappings/items/ocsf",
"default": "",
"description": "ocsf mapping",
"examples": [
"process.user.name"
],
"type": "string"
},
"cim": {
"$id": "#/properties/tags/mappings/items/cim",
"default": "",
"description": "cim mapping",
"examples": [
"user"
],
"type": "string"
}
},
"required": [
"ocsf",
"cim"
]
},
"type": "array"
}
}
}
},
"required": [
"name",
"id",
"version",
"description",
"how_to_implement",
"known_false_positives",
"references",
"tags"
],
"title": "BA Detection Schema",
"type": "object"
}