Base Event [0] Class

The base event is a generic and concrete event. It also defines a set of attributes available in most event classes. As a generic event that does not belong to any event category, it could be used to log events that are not otherwise defined by the schema.
Note: a superscript "O" after a caption indicates attribute is an observable, for example: Device O.
Caption Name Group Requirement Type Description
API Details api context optional API Describes details about a typical API (Application Programming Interface) call.
Activity activity_name classification optional String The event activity name, as defined by the activity_id.
Activity ID activity_id classification required Integer The normalized identifier of the activity that triggered the event.
0Unknown
The event activity is unknown.
99Other
The event activity is not mapped. See the activity_name attribute, which contains a data source specific value.
Category category_name classification optional String The event category name, as defined by category_uid value.
Category ID category_uid classification required Integer The category unique identifier of the event.
0Uncategorized
Class class_name classification optional String The event class name, as defined by class_uid value: Base Event.
Class ID class_uid classification required Integer The unique identifier of a class. A class describes the attributes available in an event.
0Base Event
The base event is a generic and concrete event. It also defines a set of attributes available in most event classes. As a generic event that does not belong to any event category, it could be used to log events that are not otherwise defined by the schema.
Cloud cloud primary required Cloud Describes details about the Cloud environment where the event was originally created or logged.
Count count occurrence optional Integer The number of times that events in the same logical group occurred during the event Start Time to End Time period.
Duration Milliseconds duration occurrence optional Long The event duration or aggregate time, the amount of time the event covers from start_time to end_time in milliseconds.
End Time end_time occurrence optional Timestamp The end time of a time period, or the time of the most recent event included in the aggregate event.
End Time end_time_dt occurrence optional Datetime The end time of a time period, or the time of the most recent event included in the aggregate event.
Enrichments enrichments context optional Enrichment Array The additional information from an external data source, which is associated with the event or a finding. For example add location information for the IP address in the DNS answers:

[{"name": "answers.ip", "value": "92.24.47.250", "type": "location", "data": {"city": "Socotra", "continent": "Asia", "coordinates": [-25.4153, 17.0743], "country": "YE", "desc": "Yemen"}}]
Event Time time occurrence required Timestamp The normalized event occurrence time or the finding creation time.
Event Time time_dt occurrence optional Datetime The normalized event occurrence time or the finding creation time.
Message message primary recommended String The description of the event/finding, as defined by the source.
Metadata metadata context required Metadata The metadata associated with the event or a finding.
OSINT osint primary required OSINT Array The OSINT (Open Source Intelligence) object contains details related to an indicator such as the indicator itself, related indicators, geolocation, registrar information, subdomains, analyst commentary, and other contextual information. This information can be used to further enrich a detection or finding by providing decisioning support to other analysts and engineers.
Observables observables primary recommended Observable Array The observables associated with the event or a finding.
Raw Data raw_data context optional String The raw event/finding data as received from the source.
Severity severity classification optional String The event/finding severity, normalized to the caption of the severity_id value. In the case of 'Other', it is defined by the source.
Severity ID severity_id classification required Integer

The normalized identifier of the event/finding severity.

The normalized severity is a measurement the effort and expense required to manage and resolve an event or incident. Smaller numerical values represent lower impact events, and larger numerical values represent higher impact events.
0Unknown
The event/finding severity is unknown.
1Informational
Informational message. No action required.
2Low
The user decides if action is needed.
3Medium
Action is required but the situation is not serious at this time.
4High
Action is required immediately.
5Critical
Action is required immediately and the scope is broad.
6Fatal
An error occurred but it is too late to take remedial action.
99Other
The event/finding severity is not mapped. See the severity attribute, which contains a data source specific value.
Start Time start_time occurrence optional Timestamp The start time of a time period, or the time of the least recent event included in the aggregate event.
Start Time start_time_dt occurrence optional Datetime The start time of a time period, or the time of the least recent event included in the aggregate event.
Status status primary recommended String The event status, normalized to the caption of the status_id value. In the case of 'Other', it is defined by the event source.
Status Code status_code primary recommended String The event status code, as reported by the event source.

For example, in a Windows Failed Authentication event, this would be the value of 'Failure Code', e.g. 0x18.
Status Detail status_detail primary recommended String The status detail contains additional information about the event/finding outcome.
Status ID status_id primary recommended Integer The normalized identifier of the event status.
0Unknown
The status is unknown.
1Success
2Failure
99Other
The event status is not mapped. See the status attribute, which contains a data source specific value.
Timezone Offset timezone_offset occurrence recommended Integer The number of minutes that the reported event time is ahead or behind UTC, in the range -1,080 to +1,080.
Type ID type_uid classification required Long The event/finding type ID. It identifies the event's semantics and structure. The value is calculated by the logging system as: class_uid * 100 + activity_id.
0Base Event: Unknown
99Base Event: Other
Type Name type_name classification optional String The event/finding type name, as defined by the type_uid.
Unmapped Data unmapped context optional Object The attributes that are not mapped to the event schema. The names and values of those attributes are specific to the event source.
Profiles
Applicable profiles: Cloud, Date/Time, OSINT.