File System Activity

File System Activity events report when a process performs an action on a file or folder.

Attributes

CaptionNameTypeDescription
Access Mask access_mask Integer The access mask in a platform-native format.
Action action String The normalized caption of action_id.
Action ID action_id Integer The action taken by a control or other policy-based system leading to an outcome or disposition. Dispositions conform to an action of 1 'Allowed' or 2 'Denied' in most cases. Note that 99 'Other' is not an option. No action would equate to 1 'Allowed'. An unknown action may still correspond to a known disposition. Refer to disposition_id for the outcome of the action.
  • 0: Unknown (UNKNOWN)
  • 1: Allowed (ALLOWED)
  • 2: Denied (DENIED)
  • 99: Other (OTHER)
Activity ID activity_id Integer The normalized identifier of the activity that triggered the event.
  • 0: Unknown (UNKNOWN)
  • 1: Create (CREATE)
  • 10: Encrypt (ENCRYPT)
  • 11: Decrypt (DECRYPT)
  • 12: Mount (MOUNT)
  • 13: Unmount (UNMOUNT)
  • 14: Open (OPEN)
  • 2: Read (READ)
  • 3: Update (UPDATE)
  • 4: Delete (DELETE)
  • 5: Rename (RENAME)
  • 6: Set Attributes (SET_ATTRIBUTES)
  • 7: Set Security (SET_SECURITY)
  • 8: Get Attributes (GET_ATTRIBUTES)
  • 9: Get Security (GET_SECURITY)
  • 99: Other (OTHER)
Activity activity_name String The event activity name, as defined by the activity_id.
Actor actor Actor[] The actor that performed the activity on the file object
API Details api API[] Describes details about a typical API (Application Programming Interface) call.
MITRE ATT&CK® Details attacks MITRE ATT&CK®[] An array of MITRE ATT&CK® objects describing the tactics, techniques & sub-techniques identified by a security control or finding.
Authorization Information authorizations Authorization Result[] Provides details about an authorization, such as authorization outcome, and any associated policies related to the activity/event.
Category category_name String The event category name, as defined by category_uid value.
Category ID category_uid Integer The category unique identifier of the event.
  • 1: System Activity (SYSTEM_ACTIVITY)
Class class_name String The event class name, as defined by class_uid value.
Class ID class_uid Integer The unique identifier of a class. A class describes the attributes available in an event.
  • 1001: File System Activity (FILE_SYSTEM_ACTIVITY)
Cloud cloud Cloud[] Describes details about the Cloud environment where the event was originally created or logged.
Component component String

The name or relative pathname of a sub-component of the data object, if applicable.

For example: attachment.doc, attachment.zip/bad.doc, or part.mime/part.cab/part.uue/part.doc.
Confidence confidence Integer The confidence of the reported event severity as a percentage: 0%-100%.

🚧 WARNING: DEPRECATED

Confidence has been deprecated since 1.1.0. Deprecated in upgrade from ocsf-0.31.1 to qdm-1.1.0

Connection Identifier connection_uid String The network connection identifier.
Count count Integer The number of times that events in the same logical group occurred during the event Start Time to End Time period.
Create Mask create_mask String The original Windows mask that is required to create the object.
Data data JSON Additional data that is associated with the event.

🚧 WARNING: DEPRECATED

Data has been deprecated since 1.1.0. Deprecated in upgrade from ocsf-0.31.1 to qdm-1.1.0

Device device Device[] An addressable device, computer system or host.
Disposition disposition String The disposition name, normalized to the caption of the disposition_id value. In the case of 'Other', it is defined by the event source.
Disposition ID disposition_id Integer Describes the outcome or action taken by a security control, such as access control checks, malware detections or various types of policy violations.
  • 0: Unknown (UNKNOWN)
  • 1: Allowed (ALLOWED)
  • 10: Exonerated (EXONERATED)
  • 11: Corrected (CORRECTED)
  • 12: Partially Corrected (PARTIALLY_CORRECTED)
  • 13: Uncorrected (UNCORRECTED)
  • 14: Delayed (DELAYED)
  • 15: Detected (DETECTED)
  • 16: No Action (NO_ACTION)
  • 17: Logged (LOGGED)
  • 18: Tagged (TAGGED)
  • 19: Alert (ALERT)
  • 2: Blocked (BLOCKED)
  • 20: Count (COUNT)
  • 21: Reset (RESET)
  • 22: Captcha (CAPTCHA)
  • 23: Challenge (CHALLENGE)
  • 24: Access Revoked (ACCESS_REVOKED)
  • 25: Rejected (REJECTED)
  • 26: Unauthorized (UNAUTHORIZED)
  • 27: Error (ERROR)
  • 3: Quarantined (QUARANTINED)
  • 4: Isolated (ISOLATED)
  • 5: Deleted (DELETED)
  • 6: Dropped (DROPPED)
  • 7: Custom Action (CUSTOM_ACTION)
  • 8: Approved (APPROVED)
  • 9: Restored (RESTORED)
  • 99: Other (OTHER)
Duration duration 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 Timestamp The end time of a time period, or the time of the most recent event included in the aggregate event.
Enrichments enrichments Enrichment[] 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"}}]
File file File[] The file that is the target of the activity.
File Diff file_diff String File content differences used for change detection. For example, a common use case is to identify itemized changes within INI or configuration/property setting values.
File Result file_result File[] The resulting file object when the activity was allowed and successful.
Firewall Rule firewall_rule Firewall Rule[] The firewall rule that triggered the event.
Malware malware Malware[] A list of Malware objects, describing details about the identified malware.
Message message String The description of the event/finding, as defined by the source.
Metadata metadata Metadata[] The metadata associated with the event or a finding.
Observables observables Observable[] The observables associated with the event or a finding.
OSINT osint OSINT[] 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.
Raw Data raw_data JSON The event data as received from the event source.
Record ID record_id String Unique idenifier for the event
Severity severity 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 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.
  • 0: Unknown (UNKNOWN)
  • 1: Informational (INFORMATIONAL)
  • 2: Low (LOW)
  • 3: Medium (MEDIUM)
  • 4: High (HIGH)
  • 5: Critical (CRITICAL)
  • 6: Fatal (FATAL)
  • 99: Other (OTHER)
Start Time start_time Timestamp The start time of a time period, or the time of the least recent event included in the aggregate event.
Status status 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 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 Details status_detail String The status detail contains additional information about the event/finding outcome.
Status ID status_id Integer The normalized identifier of the event status.
  • 0: Unknown (UNKNOWN)
  • 1: Success (SUCCESS)
  • 2: Failure (FAILURE)
  • 99: Other (OTHER)
Event Time time Timestamp The normalized event occurrence time or the finding creation time.
Timezone Offset timezone_offset Integer The number of minutes that the reported event time is ahead or behind UTC, in the range -1,080 to +1,080.
Type Name type_name String The event/finding type name, as defined by the type_uid.
Type ID type_uid 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.
  • 100100: File System Activity: Unknown (FILE_SYSTEM_ACTIVITY_UNKNOWN)
  • 100101: File System Activity: Create (FILE_SYSTEM_ACTIVITY_CREATE)
  • 100102: File System Activity: Read (FILE_SYSTEM_ACTIVITY_READ)
  • 100103: File System Activity: Update (FILE_SYSTEM_ACTIVITY_UPDATE)
  • 100104: File System Activity: Delete (FILE_SYSTEM_ACTIVITY_DELETE)
  • 100105: File System Activity: Rename (FILE_SYSTEM_ACTIVITY_RENAME)
  • 100106: File System Activity: Set Attributes (FILE_SYSTEM_ACTIVITY_SET_ATTRIBUTES)
  • 100107: File System Activity: Set Security (FILE_SYSTEM_ACTIVITY_SET_SECURITY)
  • 100108: File System Activity: Get Attributes (FILE_SYSTEM_ACTIVITY_GET_ATTRIBUTES)
  • 100109: File System Activity: Get Security (FILE_SYSTEM_ACTIVITY_GET_SECURITY)
  • 100110: File System Activity: Encrypt (FILE_SYSTEM_ACTIVITY_ENCRYPT)
  • 100111: File System Activity: Decrypt (FILE_SYSTEM_ACTIVITY_DECRYPT)
  • 100112: File System Activity: Mount (FILE_SYSTEM_ACTIVITY_MOUNT)
  • 100113: File System Activity: Unmount (FILE_SYSTEM_ACTIVITY_UNMOUNT)
  • 100114: File System Activity: Open (FILE_SYSTEM_ACTIVITY_OPEN)
  • 100199: File System Activity: Other (FILE_SYSTEM_ACTIVITY_OTHER)
Unmapped Data unmapped Unmapped[] The attributes that are not mapped to the event schema. The names and values of those attributes are specific to the event source.

Relationships

File System Activity shown in context

Outbound Relationships

File System Activity references the following objects and events in its attributes:

This page describes qdm-1.3.2+ocsf-1.3.0