Extensions

Extensions to a UDM event.

JSON representation
{"auth":{object (Authentication)},"vulns":{object (Vulnerabilities)},"entityRisk":{object (EntityRisk)},"linuxUtmp":{object (LinuxUtmp)},"windowsEventLog":{object (WindowsEventLog)},"resourceUsage":{object (ResourceUsage)},"systemEventDetails":{object (SystemEventDetails)},"outlookMetadata":{object (OutlookMetadata)},"srum":{object (Srum)},"userAssist":{object (UserAssist)}}
Fields
auth

object (Authentication)

An authentication extension.

vulns

object (Vulnerabilities)

A vulnerability extension.

entityRisk

object (EntityRisk)

An entity risk change extension.

linuxUtmp

object (LinuxUtmp)

A Linux Utmp extension. This captures details specific to Linux Utmp events, which record login and logout sessions on a Linux system.

windowsEventLog

object (WindowsEventLog)

A Windows Event Log extension. This captures details specific to Windows Event Log events, providing structured information from various Windows logs.

resourceUsage

object (ResourceUsage)

A resource usage extension. This captures details about what entity (e.g., process, user) is using a specific resource.

systemEventDetails

object (SystemEventDetails)

A system event details extension. This captures additional details for system-level events, such as message type, sender image ID, and subsystem.

outlookMetadata

object (OutlookMetadata)

A Microsoft Outlook specific metadata extension. This includes metadata related to Outlook items, such as comments, templates, and security flags.

srum

object (Srum)

A SRUM extension. This captures details specific to Windows System Resource Usage Monitor (SRUM) events, providing insights into application resource consumption.

userAssist

object (UserAssist)

A UserAssist extension. This captures details specific to Windows User Assist events, which track application usage and execution.

Vulnerabilities

The Vulnerabilities extension captures details on observed/detected vulnerabilities.

JSON representation
{"vulnerabilities":[{object (Vulnerability)}]}
Fields
vulnerabilities[]

object (Vulnerability)

A list of vulnerabilities.

LinuxUtmp

The LinuxUtmp extension captures details specific to Linux Utmp events.

JSON representation
{"recordType":enum (RecordType)}
Fields
recordType

enum (RecordType)

The activity record type.

WindowsEventLog

The WindowsEventLog extension captures details specific to Windows Event Log events.

JSON representation
{"channel":enum (Channel),"eventId":string,"activityId":string}
Fields
channel

enum (Channel)

The channel of the event.

eventId

string

A unique identifier for a specific type of event.

activityId

string

A GUID (Globally Unique Identifier) used to link a sequence of related events together.

ResourceUsage

The ResourceUsage extension captures details about what is using a resource.

JSON representation
{"usedEntity":string,"usedEntityId":string}
Fields
usedEntity

string

The name of the entity (e.g., process, user) that is using the resource.

usedEntityId

string

A numerical identifier for the entity using the resource (e.g., PID, UID).

SystemEventDetails

Captures additional details for system-level events.

JSON representation
{"messageType":string,"senderImageId":string,"subsystem":string}
Fields
messageType

string

The specific type or category of the message.

senderImageId

string

An identifier for the image associated with the sender of the message.

subsystem

string

The subsystem or component that generated the event.

OutlookMetadata

Microsoft Outlook specific metadata.

JSON representation
{"comment":string,"template":string,"title":string,"securityFlagsCount":integer}
Fields
comment

string

A user-defined comment or note associated with the Outlook item.

template

string

The name of the template file used to create the Outlook item.

title

string

The title of the Outlook item.

securityFlagsCount

integer

Count of Security-related flags for the message, such as encryption or signing status.

Srum

The Srum extension captures details specific to Windows System Resource Usage Monitor (SRUM) events.

JSON representation
{"id":string,"backgroundBytesRead":string,"backgroundBytesWritten":string,"backgroundContextSwitches":string,"backgroundCycleCount":string,"backgroundFlushesCount":string,"backgroundReadOperations":string,"backgroundWriteOperations":string,"interfaceLuid":string}
Fields
id

string

A unique identifier for the SRUM record or the application/user being monitored.

backgroundBytesRead

string (int64 format)

The number of bytes read by the application while running in the background.

backgroundBytesWritten

string (int64 format)

The number of bytes written by the application while running in the background.

backgroundContextSwitches

string (int64 format)

The number of context switches performed by the application's threads while in the background.

backgroundCycleCount

string (int64 format)

The amount of CPU cycle time consumed by the application in the background, measured in clock cycles.

backgroundFlushesCount

string (int64 format)

The number of flush operations performed by the application in the background.

backgroundReadOperations

string (int64 format)

The number of read operations performed by the application in the background.

backgroundWriteOperations

string (int64 format)

The number of write operations performed by the application in the background.

interfaceLuid

string

The Locally Unique Identifier (LUID) for the network interface used for data transfer.

UserAssist

The UserAssist extension captures details specific to Windows User Assist events.

JSON representation
{"applicationFocusCount":string,"applicationFocusDuration":string,"executionsCount":string,"entryIndex":string}
Fields
applicationFocusCount

string (int64 format)

The number of times the application associated with the entry gained focus.

applicationFocusDuration

string (Duration format)

The total duration the application associated with the entry was in focus.

A duration in seconds with up to nine fractional digits, ending with 's'. Example:"3.5s".

executionsCount

string (int64 format)

The number of times the application associated with the entry has been executed.

entryIndex

string (int64 format)

The index or identifier of the user assist entry, unique per user.

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Last updated 2025-11-13 UTC.