# Detection Schema Schema ``` http://example.com/example.json ``` schema for detections | Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Defined In | |----------|------------|--------|--------------|-------------------|-----------------------|------------| | Can be instantiated | No | Experimental | No | Forbidden | Permitted | | # Detection Schema Properties | Property | Type | Required | Nullable | Default | Defined by | |----------|------|----------|----------|---------|------------| | [author](#author) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [date](#date) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [description](#description) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [how_to_implement](#how_to_implement) | `string` | Optional | No | `""` | Detection Schema (this schema) | | [id](#id) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [known_false_positives](#known_false_positives) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [name](#name) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [references](#references) | `string[]` | Optional | No | `[]` | Detection Schema (this schema) | | [search](#search) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [tags](#tags) | `object` | **Required** | No | `{}` | Detection Schema (this schema) | | [type](#type) | `string` | **Required** | No | `""` | Detection Schema (this schema) | | [version](#version) | `integer` | **Required** | No | `0` | Detection Schema (this schema) | | `*` | any | Additional | Yes | this schema *allows* additional properties | ## author Author of the detection `author` * is **required** * type: `string` * default: `""` * defined in this schema ### author Type `string` ### author Example ```json "Patrick Bareiss, Splunk" ``` ## date date of creation or modification, format yyyy-mm-dd `date` * is **required** * type: `string` * default: `""` * defined in this schema ### date Type `string` ### date Example ```json "2019-12-06" ``` ## description A detailed description of the detection `description` * is **required** * type: `string` * default: `""` * defined in this schema ### description Type `string` ### description Example ```json "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." ``` ## how_to_implement information about how to implement. Only needed for non standard implementations. `how_to_implement` * is optional * type: `string` * default: `""` * defined in this schema ### how_to_implement Type `string` ### how_to_implement Example ```json "This search requires Sysmon Logs and a Sysmon configuration, which includes EventCode 10 for lsass.exe." ``` ## id UUID as unique identifier `id` * is **required** * type: `string` * default: `""` * defined in this schema ### id Type `string` ### id Example ```json "fb4c31b0-13e8-4155-8aa5-24de4b8d6717" ``` ## known_false_positives known false postives `known_false_positives` * is **required** * type: `string` * default: `""` * defined in this schema ### known_false_positives Type `string` ### known_false_positives Example ```json "Administrators can create memory dumps for debugging purposes, but memory dumps of the LSASS process would be unusual." ``` ## name ### Name of detection `name` * is **required** * type: `string` * default: `""` * defined in this schema ### name Type `string` ### name Example ```json "Access LSASS Memory for Dump Creation" ``` ## references A list of references for this detection `references` * is optional * type: `string[]` * default: `[]` * defined in this schema ### references Type Array type: `string[]` All items must be of the type: `string` An explanation about the purpose of this instance. ### references Example ```json [ "https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf" ] ``` ## search The Splunk search for the detection `search` * is **required** * type: `string` * default: `""` * defined in this schema ### search Type `string` ### search Example ```json "`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`" ``` ## tags An array of key value pairs for tagging `tags` * is **required** * type: `object` * default: `{}` * defined in this schema ### tags Type `object` with following properties: | Property | Type | Required | |----------|------|----------| ### tags Example ```json { "analytics_story": "credential_dumping", "custom_key": "custom_value" } ``` ## type type of detection `type` * is **required** * type: `string` * default: `""` * defined in this schema ### type Type `string` ### type Example ```json "ESCU" ``` ## version version of detection, e.g. 1 or 2 ... `version` * is **required** * type: `integer` * default: `0` * defined in this schema ### version Type `integer` ### version Example ```json 2 ```