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SMB Activity

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Server Message Block (SMB) Protocol Activity events report client/server connections sharing resources within the network.

Attributes

CaptionNameTypeDescription
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: File Supersede (FILE_SUPERSEDE)
  • 2: File Open (FILE_OPEN)
  • 3: File Create (FILE_CREATE)
  • 4: File Open If (FILE_OPEN_IF)
  • 5: File Overwrite (FILE_OVERWRITE)
  • 6: File Overwrite If (FILE_OVERWRITE_IF)
  • 99: Other (OTHER)
Activity activity_name String The event activity name, as defined by the activity_id.
Actor actor Actor[] The actor object describes details about the user/role/process that was the source of the activity.
API Details api API[] Describes details about a typical API (Application Programming Interface) call.
Application Name app_name String The name of the application associated with the event or object.
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.
  • 4: Network Activity (NETWORK_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.
  • 4006: SMB Activity (SMB_ACTIVITY)
Client Dialects client_dialects String[] The list of SMB dialects that the client speaks.
Cloud cloud Cloud[] Describes details about the Cloud environment where the event was originally created or logged.
Command command String The command name (e.g. SMB2_COMMAND_CREATE, SMB1_COMMAND_WRITE_ANDX).
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 Info connection_info Network Connection Information[] The network connection information.
Count count Integer The number of times that events in the same logical group occurred during the event Start Time to End Time period.
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
Distributed Computing Environment/Remote Procedure Call (DCE/RPC) dce_rpc DCE/RPC[] The DCE/RPC object describes the remote procedure call system for distributed computing environments.
Device device Device[] An addressable device, computer system or host.
Dialect dialect String The negotiated protocol dialect.
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)
Destination Endpoint dst_endpoint Network Endpoint[] The responder (server) in a network connection.
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 SMB activity.
Firewall Rule firewall_rule Firewall Rule[] The firewall rule that triggered the event.
JA4+ Fingerprints ja4_fingerprint_list JA4+ Fingerprint[] A list of the JA4+ network fingerprints.
Load Balancer load_balancer Load Balancer[] The Load Balancer object contains information related to the device that is distributing incoming traffic to specified destinations.
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.
Open Type open_type String Indicates how the file was opened (e.g. normal, delete on close).
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.
Proxy proxy Network Proxy Endpoint[] The proxy (server) in a network connection.

🚧 WARNING: DEPRECATED

Proxy has been deprecated since 1.1.0. Use the proxy_endpoint attribute instead.
Proxy Connection Info proxy_connection_info Network Connection Information[] The connection information from the proxy server to the remote server.
Proxy Endpoint proxy_endpoint Network Proxy Endpoint[] The proxy (server) in a network connection.
Proxy HTTP Request proxy_http_request HTTP Request[] The HTTP Request from the proxy server to the remote server.
Proxy HTTP Response proxy_http_response HTTP Response[] The HTTP Response from the remote server to the proxy server.
Proxy TLS proxy_tls Transport Layer Security (TLS)[] The TLS protocol negotiated between the proxy server and the remote server.
Proxy Traffic proxy_traffic Network Traffic[] The network traffic refers to the amount of data moving across a network, from proxy to remote server at a given point of time.
Raw Data raw_data JSON The event data as received from the event source.
Record ID record_id String Unique idenifier for the event
API Response Details response Response Elements[] The server response in an SMB network connection.
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)
Share share String The SMB share name.
Share Type share_type String The SMB share type, normalized to the caption of the share_type_id value. In the case of 'Other', it is defined by the event source.
Share Type Id share_type_id Integer The normalized identifier of the SMB share type.
  • 0: Unknown (UNKNOWN)
  • 1: File (FILE)
  • 2: Pipe (PIPE)
  • 3: Print (PRINT)
  • 99: Other (OTHER)
Source Endpoint src_endpoint Network Endpoint[] The initiator (client) of the network connection.
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.
TLS tls Transport Layer Security (TLS)[] The Transport Layer Security (TLS) attributes.
Traffic traffic Network Traffic[] The network traffic refers to the amount of data moving across a network at a given point of time. Intended to be used alongside Network Connection.
Tree UID tree_uid String The tree id is a unique SMB identifier which represents an open connection to a share.
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.
  • 400600: SMB Activity: Unknown (SMB_ACTIVITY_UNKNOWN)
  • 400601: SMB Activity: File Supersede (SMB_ACTIVITY_FILE_SUPERSEDE)
  • 400602: SMB Activity: File Open (SMB_ACTIVITY_FILE_OPEN)
  • 400603: SMB Activity: File Create (SMB_ACTIVITY_FILE_CREATE)
  • 400604: SMB Activity: File Open If (SMB_ACTIVITY_FILE_OPEN_IF)
  • 400605: SMB Activity: File Overwrite (SMB_ACTIVITY_FILE_OVERWRITE)
  • 400606: SMB Activity: File Overwrite If (SMB_ACTIVITY_FILE_OVERWRITE_IF)
  • 400699: SMB Activity: Other (SMB_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

SMB Activity shown in context

Outbound Relationships

SMB Activity references the following objects and events in its attributes:

This page describes qdm-1.3.2+ocsf-1.3.0

Updated about 1 month ago