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Detection rules › Kusto

GWorkspace - User access has been changed

Status
available
Severity
low
Time window
1h
Source
github.com/Azure/Azure-Sentinel

'Detects user access change.'

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1098 Account Manipulation

Rule body kusto

id: 92fae638-5da8-11ec-bf63-0242ac130002
name: GWorkspace - User access has been changed
description: |
  'Detects user access change.'
severity: Low
status: Available
requiredDataConnectors:
  - connectorId: GoogleWorkspaceReportsAPI
    dataTypes:
      - GWorkspaceActivityReports
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Persistence
relevantTechniques:
  - T1098
query: |
  GWorkspaceActivityReports
  | where EventMessage has "change_user_access"
  | extend AccountCustomEntity = ActorEmail
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: AccountCustomEntity
version: 1.0.1
kind: Scheduled

Stages and Predicates

Stage 1: source

GWorkspaceActivityReports

Stage 2: where

| where EventMessage has "change_user_access"

Stage 3: extend

| extend AccountCustomEntity = ActorEmail

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
EventMessagematch
  • change_user_access transforms: term

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

FieldSource
AccountCustomEntityextend