Change Auditor 7.2 - SIEM Integration User Guide

New-CAEventWebhookSubscription Get-CAEventWebhookSubscriptions Set-CAEventWebhookSubscription Remove-CAEventWebhookSubscription Get-CAEventExportSubsystems

Working with event subscriptions in the client Managing a Splunk integration

Working with Splunk subscriptions through the client New-CASplunkEventSubscription Get-CASplunkEventSubscriptions Set-CASplunkEventSubscription Remove-CASplunkEventSubscription

Managing an IBM QRadar integration

Working with QRadar subscriptions through the client New-CAQRadarExtension New-CAQRadarEventSubscription Get-CAQRadarEventSubscriptions Set-CAQRadarEventSubscription Remove-CAQRadarEventSubscription

Managing a Micro Focus Security ArcSight Logger and Enterprise Security Manager (ESM) integration

Working with Change Auditor data within ArcSight Working with ArcSight subscriptions through the client New-CAArcSightEventSubscription Get-CAArcSightEventSubscriptions Set-CAArcSightEventSubscription Remove-CAArcSightEventSubscription

Managing a Quest IT Security Search integration (Preview)

Working with a Quest IT Security Search subscriptions through the client New-CAITSSEventSubscription Get-CAITSSEventSubscriptions Set-CAITSSEventSubscription Remove-CAITSSEventSubscription

Managing a Syslog integration

Working with Syslog subscriptions through the client New-CASyslogEventSubscription Get-CASyslogEventSubscriptions Set-CASyslogEventSubscription Remove-CASyslogEventSubscription

Webhook technical insights

Handling webhook responses

New-CAQRadarEventSubscription

Use this command to create the subscription required to send Change Auditor event data to QRadar.


	NOTE: Some Change Auditor events exceed QRadar’s recommended supported event data length. If a Change Auditor event exceeds this limit, the event data is continued in new QRadar events to ensure all data is stored.


	NOTE: Columns that do not contain any event data will not display in QRadar.

Table 2. Available parameters

Parameter

Description

-Connection

A connection obtained by using the Connect-CAClient command. See the Change Auditor Command Guide for details.

-QRadarHost

Specifies the IPv4 address or FQDN (fully qualified domain name) of your QRadar instance that will receive the event data.

-Subsystems

Specifies an array of event subsystems from which to send events. This can be single or multiple subsystems.

NOTE: To obtain an array of subsystems, use the Get-CAEventExportSubsystems command and filter the list to specify the required subsystems.

-QRadarPort (Optional)

Specifies the port number for your QRadar instance that will receive the event data.

When TlsEnabled is set to true to enable TLS/SSL encryption, the default port is 6514.

When the TlsEnabled is set to false to send unencrypted events, the default port is 514.

-StartTimeUTC (Optional)

Specifies date and time from which events should be sent. The default is to start sending events from the time when the subscription is created.

For example:

•

20 July, 2020 12:01 PM uses local time

•

2020-07-20 12:10:00Z uses UTC time

The time will be local unless you specify the required flag to convert to UTC.

NOTE: The time cannot be more than 30 days prior to the Change Auditor installation date.

-BatchSize (Optional)

Specifies the maximum number of events to include in a single notification. The default is 10000 events.

-Enabled (Optional)

Specifies whether the subscription is enabled or disabled. By default it is enabled.

-HeartbeatUrl (Optional)

Specifies where (URL) to send heartbeat notifications. Heatbeat notifications cannot be sent directly to QRadar. To use this parameter, you must use a previously created webhook URL.

NOTE: If no value is specified, a heartbeat notification is not sent.

-NotificationInterval (Optional)

Specifies how often (in milliseconds) notifications are sent to the QRadar instance. By default this is set to 0 which results in a continuous stream of events.

-HeartbeatInterval (Optional)

Specifies how often (in milliseconds) heartbeat notifications are sent to the HeartbeatURL. By default, this is set to every 5 minutes. Setting this to 0 disables the heartbeat notifications.

-AllowedCoordinators (Optional)

Specifies the DNS or NetBIOS name of the coordinators permitted to send events. By default, any coordinator can send the events.

NOTE: The list order does not determine which coordinator is selected to send events.

-TlsEnabled (Optional)

When set to true, the subscription sends events encrypted with TLS/SSL and sets the default port to 6514.

When set to false, the subscription sends events without encryption enabled, and sets the default port to 514.

The default is set to true.

-IncludeO365AADDetails (Optional)

Specifies whether to include the raw JSON event details provided by Microsoft. When set to true, the event will include a field named additionalDetails, containing the raw JSON string for Office 365 and Azure Active Directory events. When set to false, the additionalDetails field is not included.

By default, this is set to false.

Example: Create a subscription to send all subsystems event data to a QRadar instance

$allSubsystems = Get-CAEventExportSubsystems -Connection $connection

New-CAQRadarEventSubscription -Connection $connection -QRadarHost $QRadarHost
-Subsystems $allSubsystems

Get-CAQRadarEventSubscriptions

Use this command to see the details of the current QRadar subscriptions.


	NOTE: The “Batches sent”, “Last event time in UTC”, “Last event response” and “Events sent” are all indicators that the events are being received by QRadar. Any failures receiving the data populate the “Last event response” property in the object with information on why the data was not received.

Table 9. Available parameters


Parameter	Description
-Connection	A connection obtained by using the Connect-CAClient command. See the Change Auditor Command Guide for details.
-SubscriptionId (optional)	The ID of an existing QRadar subscription. If specified, the command will only return the QRadar subscription with that ID. If not specified, all QRadar subscriptions are returned.

Example: List defined QRadar subscriptions

Get-CAQRadarEventSubscriptions -Connection $connection

Command output

The command returns the following information.

Table 10. Available configuration information
Setting	Description
Id	The subscription ID.
WebhookSubscriptionId	The webhook subscription ID.
QRadarUrl	The URL where the event data is sent.
StartTimeUTC	Starting point in time for events being sent.
Subsystems	Subsystems that contain the event data being sent.
Enabled	Whether the subscription is enabled.
HeartbeatUrl	The URL where heartbeat notifications are sent.
LastEventTimeUTC	When the last event was sent.
LastEventResponse	Last event response. For example, statusCode = OK (200), statusCode = Bad Request (400), or statusCode = Internal Server Error (500).
LastHeartbeatTimeUTC	When the last heartbeat was sent.
LastHeartbeatResponse	Last heartbeat response. For example, statusCode = OK (200), statusCode = Bad Request (400), or statusCode = Internal Server Error (500).
EventsSent	Number of events sent.
BatchesSent	Number of batches sent.
HeartbeatsSent	Number of heartbeats sent.
NotificationInterval	How often (in milliseconds) notifications are sent.
HeartbeatInterval	How often (in milliseconds) heartbeat notifications are sent.
BatchSize	Batch size. (The maximum number of events that the active batch size can increase to.)
ActiveBatchSize	The current batch size. (The current number of events to include in a single notification message.) The batch size is automatically adjusted based on network throughput and system performance. Its value never exceeds the specified batch size.
AllowedCoordinators	List of coordinators permitted to send events.
LastCoordinator	The coordinator that is sending events. If the subscription is disabled, this is the last coordinator sending the events.
IncludeO365AADDetails	Identifies whether or not the additionalDetails field with the raw JSON string is included for Office 365 and Azure Active Directory events.

Set-CAQRadarEventSubscription


	NOTE: A new extension must be created if the -QRadarHost or -QRadarPort has been changed.

Use this command to modify a QRadar subscription.

Table 2. Available parameters


Parameter	Description
-Connection	A connection obtained by using the Connect-CAClient command. See the Change Auditor Command Guide for details.
-Subscription	The PSCAQRadarSubscriptionStatus object that corresponds to the subscription to modify. This parameter is required if the SubscriptionId parameter is not specified.
-SubscriptionId	The ID of the subscription to modify. This parameter is required if the Subscription parameter is not specified. Use the Get-CAQRadarEventSubscriptions command to find the ID.
-QRadarHost	Specifies the IPv4 address or FQDN (fully qualified domain name) of your QRadar instance that will receive the event data.
-QRadarPort (Optional)	Specifies the port number for your QRadar instance that will receive the event data. The default port depends on whether the existing subscription is sending encrypted or unencrypted events. When TlsEnabled is set to true the default port is 6514; when set to false the default port is 514.
-BatchSize (Optional)	Specifies the maximum number of events to include in a single notification. The default is 10000 events.
-Enabled (Optional)	Specifies whether the subscription is enabled or disabled. By default it is enabled.
-HeartbeatUrl (Optional)	Specifies where (URL) to send heartbeat notifications. NOTE: If no value is specified, a heartbeat notification is not sent.
-NotificationInterval (Optional)	Specifies how often (in milliseconds) notifications are sent to the QRadar instance. By default this is set to 0 which results in a continuous stream of events.
-HeartbeatInterval (Optional)	Specifies how often (in milliseconds) heartbeat notifications are sent to the HeartbeatUrl. By default, this is set to every 5 minutes. Setting this to 0 disables the heartbeat notifications.
-AllowedCoordinators (Optional)	Specifies the DNS or NetBIOS name of the coordinators permitted to send events. By default, any coordinator can send the events. NOTE: The list order does not determine which coordinator is selected to send events.
-Subsystems (Optional)	Specifies an array of event subsystems from which to send events. This can be single or multiple subsystems. NOTE: To obtain an array of subsystems, use the Get-CAEventExportSubsystems command and filter the list to specify the required subsystems. NOTE: The subsystems specified override the current subsystems included in the subscription.
-IncludeO365AADDetails (Optional)	Specifies whether to include the raw JSON event details provided by Microsoft. When set to true, the event will include a field named additionalDetails, containing the raw JSON string for Office 365 and Azure Active Directory events. When set to false, the additionalDetails field is not included. By default, this is set to false.

Example: Disable a subscription

Set-CAQRadarEventSubscription -Connection $connection -QRadarHost $QRadarHost -SubscriptionId $SubscriptionId -Enabled $false

Example: Edit the subsystems included in a webhook subscription

$newSubsystems = Get-CAEventExportSubsystems -Connection $connection | ? { $_.DisplayName -eq "File System" -or $_.DisplayName -eq "Active Directory" }

Set-CAQRadarEventSubscription -Connection $connection -QRadarHost $QRadarHost -SubscriptionId cd87b774-8e65-46e1-8520-da478c60c4c3 -Subsystems $newSubsystems

Remove-CAQRadarEventSubscription

Use this command to remove a QRadar subscription.

Table 11. Available parameters


Parameter	Description
-Connection	A connection obtained by using the Connect-CAClient command. See the Change Auditor Command Guide for details.
-Subscription	The PSCAQRadarSubscriptionStatus object that corresponds to the subscription to remove. This parameter is required if the SubscriptionId parameter is not specified.
-SubscriptionId	The ID of the subscription to remove. This parameter is required if the Subscription parameter is not specified. Use the Get-CAQRadarEventSubscriptions command to find the ID.

Example: Remove a QRadar subscription

Remove-CAQRadarEventSubscription -Connection $connection -SubscriptionId $subscriptionId

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Change Auditor 7.2 - SIEM Integration User Guide

New-CAQRadarEventSubscription

Get-CAQRadarEventSubscriptions

Set-CAQRadarEventSubscription

Remove-CAQRadarEventSubscription