Network Activity [4001] Class
Applicable Profiles: Cloud Date/Time OSINT Host Network Proxy Security Control Load Balancer Container Linux Users Data Classification

Network Activity Category

Network Activity events report network connection and traffic activity.
Name Caption Group Requirement Type Description
action Action primary Optional String The normalized caption of action_id.
This is the string sibling of enum attribute action_id.
action_id Action ID primary Required 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.
0Unknown
The action was unknown. The disposition_id attribute may still be set to a non-unknown value, for example 'Count', 'Uncorrected', 'Isolated', 'Quarantined' or 'Exonerated'.
1Allowed
The activity was allowed. The disposition_id attribute should be set to a value that conforms to this action, for example 'Allowed', 'Approved', 'Delayed', 'No Action', 'Count' etc.
2Denied
The attempted activity was denied. The disposition_id attribute should be set to a value that conforms to this action, for example 'Blocked', 'Rejected', 'Quarantined', 'Isolated', 'Dropped', 'Access Revoked, etc.
99Other
The action was not mapped. See the action attribute, which contains a data source specific value.
This is an enum attribute; its string sibling is action.
activity_id Activity ID classification Required Integer The normalized identifier of the activity that triggered the event.
0Unknown
The event activity is unknown.
1Open
A new network connection was opened.
2Close
The network connection was closed.
3Reset
The network connection was abnormally terminated or closed by a middle device like firewalls.
4Fail
The network connection failed. For example a connection timeout or no route to host.
5Refuse
The network connection was refused. For example an attempt to connect to a server port which is not open.
6Traffic
Network traffic report.
7Listen
A network endpoint began listening for new network connections.
99Other
The event activity is not mapped. See the activity_name attribute, which contains a data source specific value.
This is an enum attribute; its string sibling is activity_name.
activity_name Activity classification Optional String The event activity name, as defined by the activity_id.
This is the string sibling of enum attribute activity_id.
actor Actor primary Optional Actor The actor object describes details about the user/role/process that was the source of the activity.
api API Details context Optional API Describes details about a typical API (Application Programming Interface) call.
app_name Application Name context Optional String The name of the application associated with the event or object.
attacks MITRE ATT&CK® Details primary Optional MITRE ATT&CK® Array An array of MITRE ATT&CK® objects describing the tactics, techniques & sub-techniques identified by a security control or finding.
authorizations Authorization Information primary Optional Authorization Result Array Provides details about an authorization, such as authorization outcome, and any associated policies related to the activity/event.
category_name Category classification Optional String The event category name, as defined by category_uid value: Network Activity.
This is the string sibling of enum attribute category_uid.
category_uid Category ID classification Required Integer The category unique identifier of the event.
4Network Activity
Network Activity events.
This is an enum attribute; its string sibling is category_name.
class_name Class classification Optional String The event class name, as defined by class_uid value: Network Activity.
This is the string sibling of enum attribute class_uid.
class_uid Class ID classification Required Integer The unique identifier of a class. A class describes the attributes available in an event.
4001Network Activity
Network Activity events report network connection and traffic activity.
This is an enum attribute; its string sibling is class_name.
cloud Cloud primary Required Cloud Describes details about the Cloud environment where the event was originally created or logged.
connection_info Connection Info primary Recommended Network Connection Information The network connection information.
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.
device Device O primary Recommended Device An addressable device, computer system or host.
disposition Disposition primary Optional 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.
This is the string sibling of enum attribute disposition_id.
disposition_id Disposition ID primary Recommended Integer Describes the outcome or action taken by a security control, such as access control checks, malware detections or various types of policy violations.
0Unknown
The disposition is unknown.
1Allowed
Granted access or allowed the action to the protected resource.
2Blocked
Denied access or blocked the action to the protected resource.
3Quarantined
A suspicious file or other content was moved to a benign location.
4Isolated
A session was isolated on the network or within a browser.
5Deleted
A file or other content was deleted.
6Dropped
The request was detected as a threat and resulted in the connection being dropped.
7Custom Action
A custom action was executed such as running of a command script. Use the message attribute of the base class for details.
8Approved
A request or submission was approved. For example, when a form was properly filled out and submitted. This is distinct from 1 'Allowed'.
9Restored
A quarantined file or other content was restored to its original location.
10Exonerated
A suspicious or risky entity was deemed to no longer be suspicious (re-scored).
11Corrected
A corrupt file or configuration was corrected.
12Partially Corrected
A corrupt file or configuration was partially corrected.
13Uncorrected
A corrupt file or configuration was not corrected.
14Delayed
An operation was delayed, for example if a restart was required to finish the operation.
15Detected
Suspicious activity or a policy violation was detected without further action.
16No Action
The outcome of an operation had no action taken.
17Logged
The operation or action was logged without further action.
18Tagged
A file or other entity was marked with extended attributes.
19Alert
The request or activity was detected as a threat and resulted in a notification but request was not blocked.
20Count
Counted the request or activity but did not determine whether to allow it or block it.
21Reset
The request was detected as a threat and resulted in the connection being reset.
22Captcha
Required the end user to solve a CAPTCHA puzzle to prove that a human being is sending the request.
23Challenge
Ran a silent challenge that required the client session to verify that it's a browser, and not a bot.
24Access Revoked
The requestor's access has been revoked due to security policy enforcements. Note: use the Host profile if the User or Actor requestor is not present in the event class.
25Rejected
A request or submission was rejected. For example, when a form was improperly filled out and submitted. This is distinct from 2 'Blocked'.
26Unauthorized
An attempt to access a resource was denied due to an authorization check that failed. This is a more specific disposition than 2 'Blocked' and can be complemented with the authorizations attribute for more detail.
27Error
An error occurred during the processing of the activity or request. Use the message attribute of the base class for details.
99Other
The disposition is not mapped. See the disposition attribute, which contains a data source specific value.
This is an enum attribute; its string sibling is disposition.
dst_endpoint Destination Endpoint O primary Required Network Endpoint The responder (server) in a network connection.
duration Duration Milliseconds 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_dt End Time 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"}}]
firewall_rule Firewall Rule primary Optional Firewall Rule The firewall rule that triggered the event.
ja4_fingerprint_list JA4+ Fingerprints context Optional JA4+ Fingerprint Array A list of the JA4+ network fingerprints.
load_balancer Load Balancer primary Recommended Load Balancer The Load Balancer object contains information related to the device that is distributing incoming traffic to specified destinations.
malware Malware primary Optional Malware Array A list of Malware objects, describing details about the identified malware.
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.
observables Observables primary Recommended Observable Array The observables 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.
proxy Proxy O primary Recommended Network Proxy Endpoint The proxy (server) in a network connection.
DEPRECATED since v1.1.0
Use the proxy_endpoint attribute instead.
proxy_connection_info Proxy Connection Info context Recommended Network Connection Information The connection information from the proxy server to the remote server.
proxy_endpoint Proxy Endpoint O context Optional Network Proxy Endpoint The proxy (server) in a network connection.
proxy_http_request Proxy HTTP Request context Optional HTTP Request The HTTP Request from the proxy server to the remote server.
proxy_http_response Proxy HTTP Response context Optional HTTP Response The HTTP Response from the remote server to the proxy server.
proxy_tls Proxy TLS context Recommended Transport Layer Security (TLS) The TLS protocol negotiated between the proxy server and the remote server.
proxy_traffic Proxy Traffic context Recommended 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 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.
This is the string sibling of enum attribute severity_id.
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.
This is an enum attribute; its string sibling is severity.
src_endpoint Source Endpoint O primary Recommended Network Endpoint The initiator (client) of the network connection.
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_dt Start Time 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.
This is the string sibling of enum attribute status_id.
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.
This is an enum attribute; its string sibling is status.
time Event Time occurrence Required Timestamp The normalized event occurrence time or the finding creation time.
time_dt Event Time occurrence Optional Datetime The normalized event occurrence time or the finding creation time.
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.
tls TLS context Optional Transport Layer Security (TLS) The Transport Layer Security (TLS) attributes.
traffic Traffic primary Recommended 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.
type_name Type Name classification Optional String The event/finding type name, as defined by the type_uid.
This is the string sibling of enum attribute type_uid.
type_uid Type ID 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.
400100Network Activity: Unknown
400101Network Activity: Open
A new network connection was opened.
400102Network Activity: Close
The network connection was closed.
400103Network Activity: Reset
The network connection was abnormally terminated or closed by a middle device like firewalls.
400104Network Activity: Fail
The network connection failed. For example a connection timeout or no route to host.
400105Network Activity: Refuse
The network connection was refused. For example an attempt to connect to a server port which is not open.
400106Network Activity: Traffic
Network traffic report.
400107Network Activity: Listen
A network endpoint began listening for new network connections.
400199Network Activity: Other
This is an enum attribute; its string sibling is type_name.
unmapped Unmapped Data 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.
url URL O primary Recommended Uniform Resource Locator The URL details relevant to the network traffic.