{ "$id": "http://example.com/example.json", "$schema": "http://json-schema.org/draft-07/schema", "additionalProperties": true, "description": "schema for detections", "properties": { "author": { "$id": "#/properties/author", "default": "", "description": "Author of the detection", "examples": [ "Patrick Bareiss, Splunk" ], "type": "string" }, "date": { "$id": "#/properties/date", "default": "", "description": "date of creation or modification, format yyyy-mm-dd", "examples": [ "2019-12-06" ], "type": "string" }, "description": { "$id": "#/properties/description", "default": "", "description": "A detailed description of the detection", "examples": [ "dbgcore.dll is a specifc DLL for Windows core debugging. It is used to obtain a memory dump of a process. This search detects the usage of this DLL for creating a memory dump of LSASS process. Memory dumps of the LSASS process can be created with tools such as Windows Task Manager or procdump." ], "type": "string" }, "how_to_implement": { "$id": "#/properties/how_to_implement", "default": "", "description": "information about how to implement. Only needed for non standard implementations.", "examples": [ "This search requires Sysmon Logs and a Sysmon configuration, which includes EventCode 10 for lsass.exe." ], "type": "string" }, "id": { "$id": "#/properties/id", "default": "", "description": "UUID as unique identifier", "examples": [ "fb4c31b0-13e8-4155-8aa5-24de4b8d6717" ], "type": "string" }, "known_false_positives": { "$id": "#/properties/knwon_false_positives", "default": "", "description": "known false postives", "examples": [ "Administrators can create memory dumps for debugging purposes, but memory dumps of the LSASS process would be unusual." ], "type": "string" }, "name": { "$id": "#/properties/name", "default": "", "examples": [ "Access LSASS Memory for Dump Creation" ], "title": "Name of detection", "type": "string" }, "references": { "$id": "#/properties/references", "additionalItems": true, "default": [], "description": "A list of references for this detection", "examples": [ [ "https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf" ] ], "items": { "$id": "#/properties/references/items", "default": "", "description": "An explanation about the purpose of this instance.", "examples": [ "https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf" ], "title": "The Items Schema", "type": "string" }, "type": "array" }, "search": { "$id": "#/properties/search", "default": "", "description": "The Splunk search for the detection", "examples": [ "`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`" ], "type": "string" }, "tags": { "$id": "#/properties/tags", "additionalProperties": true, "default": {}, "description": "An array of key value pairs for tagging", "examples": [ { "analytics_story": "credential_dumping", "kill_chain_phases": "Action on Objectives", "mitre_attack_id": "T1078.004", "cis20": "CIS 13", "nist": "DE.DP", "security domain": "network", "asset_type": "AWS Instance", "risk_object": "user", "risk_object_type": "network_artifacts", "risk score": "60", "custom_key": "custom_value" } ], "minItems": 1, "type": "object", "uniqueItems": true }, "type": { "$id": "#/properties/type", "default": "", "description": "type of detection", "examples": [ "ESCU" ], "items": { "enum": [ "ESCU", "SSE", "RBA" ], "type": "string" }, "type": "string" }, "version": { "$id": "#/properties/version", "default": 0, "description": "version of detection, e.g. 1 or 2 ...", "examples": [ 2 ], "type": "integer" } }, "required": [ "name", "id", "version", "date", "description", "type", "author", "search", "known_false_positives", "tags" ], "title": "Detection Schema", "type": "object" }