mirror of
https://github.com/splunk/security_content
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382 lines
5.6 KiB
Markdown
382 lines
5.6 KiB
Markdown
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# Detection Schema Schema
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```
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http://example.com/example.json
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```
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schema for detections
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| Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Defined In |
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|----------|------------|--------|--------------|-------------------|-----------------------|------------|
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| Can be instantiated | No | Experimental | No | Forbidden | Permitted | |
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# Detection Schema Properties
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| Property | Type | Required | Nullable | Default | Defined by |
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|----------|------|----------|----------|---------|------------|
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| [author](#author) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [date](#date) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [description](#description) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [how_to_implement](#how_to_implement) | `string` | Optional | No | `""` | Detection Schema (this schema) |
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| [id](#id) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [known_false_positives](#known_false_positives) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [name](#name) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [references](#references) | `string[]` | Optional | No | `[]` | Detection Schema (this schema) |
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| [search](#search) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [tags](#tags) | `object` | **Required** | No | `{}` | Detection Schema (this schema) |
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| [type](#type) | `string` | **Required** | No | `""` | Detection Schema (this schema) |
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| [version](#version) | `integer` | **Required** | No | `0` | Detection Schema (this schema) |
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| `*` | any | Additional | Yes | this schema *allows* additional properties |
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## author
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Author of the detection
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`author`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### author Type
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`string`
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### author Example
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```json
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"Patrick Bareiss, Splunk"
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```
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## date
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date of creation or modification, format yyyy-mm-dd
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`date`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### date Type
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`string`
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### date Example
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```json
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"2019-12-06"
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```
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## description
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A detailed description of the detection
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`description`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### description Type
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`string`
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### description Example
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```json
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"dbgcore.dll is a specifc DLL for Windows core debugging. It is used to obtain a memory dump of a process. This search detects the usage of this DLL for creating a memory dump of LSASS process. Memory dumps of the LSASS process can be created with tools such as Windows Task Manager or procdump."
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```
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## how_to_implement
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information about how to implement. Only needed for non standard implementations.
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`how_to_implement`
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* is optional
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* type: `string`
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* default: `""`
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* defined in this schema
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### how_to_implement Type
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`string`
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### how_to_implement Example
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```json
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"This search requires Sysmon Logs and a Sysmon configuration, which includes EventCode 10 for lsass.exe."
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```
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## id
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UUID as unique identifier
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`id`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### id Type
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`string`
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### id Example
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```json
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"fb4c31b0-13e8-4155-8aa5-24de4b8d6717"
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```
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## known_false_positives
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known false postives
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`known_false_positives`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### known_false_positives Type
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`string`
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### known_false_positives Example
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```json
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"Administrators can create memory dumps for debugging purposes, but memory dumps of the LSASS process would be unusual."
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```
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## name
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### Name of detection
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`name`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### name Type
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`string`
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### name Example
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```json
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"Access LSASS Memory for Dump Creation"
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```
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## references
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A list of references for this detection
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`references`
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* is optional
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* type: `string[]`
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* default: `[]`
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* defined in this schema
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### references Type
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Array type: `string[]`
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All items must be of the type:
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`string`
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An explanation about the purpose of this instance.
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### references Example
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```json
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[
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"https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf"
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]
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```
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## search
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The Splunk search for the detection
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`search`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### search Type
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`string`
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### search Example
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```json
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"`sysmon` EventCode=10 TargetImage=*lsass.exe CallTrace=*dbgcore.dll* OR CallTrace=*dbghelp.dll* | stats count min(_time) as firstTime max(_time) as lastTime by Computer, TargetImage, TargetProcessId, SourceImage, SourceProcessId | rename Computer as dest | `security_content_ctime(firstTime)`| `security_content_ctime(lastTime)` | `access_lsass_memory_for_dump_creation_filter`"
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```
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## tags
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An array of key value pairs for tagging
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`tags`
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* is **required**
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* type: `object`
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* default: `{}`
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* defined in this schema
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### tags Type
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`object` with following properties:
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| Property | Type | Required |
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|----------|------|----------|
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### tags Example
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```json
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{
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"analytics_story": "credential_dumping",
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"custom_key": "custom_value"
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}
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```
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## type
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type of detection
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`type`
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* is **required**
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* type: `string`
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* default: `""`
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* defined in this schema
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### type Type
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`string`
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### type Example
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```json
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"ESCU"
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```
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## version
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version of detection, e.g. 1 or 2 ...
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`version`
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* is **required**
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* type: `integer`
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* default: `0`
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* defined in this schema
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### version Type
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`integer`
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### version Example
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```json
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2
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```
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