Transition to Enhanced Threat Intelligence Data Schema in Microsoft Sentinel

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Microsoft is introducing an improved data schema for Threat Intelligence in Microsoft Sentinel, with two new tables:
– ThreatIntelIndicators
– ThreatIntelObjects

Key Timelines:

  • 3 April 2025: Public preview of new tables (ThreatIntelIndicators & ThreatIntelObjects). Dual ingestion begins (legacy + new tables).
  • 31 May 2025: General Availability (GA) of new tables.
  • 31 July 2025: Legacy table (ThreatIntelligenceIndicator) stops new data ingestion. Custom content must migrate to new tables.
  • 31 May 2026: Full retirement of legacy table.

Required Actions:

  • Update analytic rules, workbooks, and KQL queries to use the new tables by 31 July 2025.
  • Opt for dual ingestion (if needed) until 31 July 2026.

You Should Know:

1. Querying the New Tables in KQL

To adapt your Kusto Query Language (KQL) queries, replace references to `ThreatIntelligenceIndicator` with:
[kql]
ThreatIntelIndicators
| where ExpirationDateTime > now()
| project IndicatorValue, ThreatType, Description
[/kql]

For threat actor data:

[kql]
ThreatIntelObjects
| where ObjectType == “ThreatActor”
| project Name, Aliases, Motivations
[/kql]

2. Updating Analytic Rules

Modify Sentinel analytics rules to use the new tables:
[kql]
// Old rule (legacy)
ThreatIntelligenceIndicator
| where …

// New rule (updated)
ThreatIntelIndicators
| where …
[/kql]

3. PowerShell Automation for Migration

Use Azure PowerShell to audit and update rules:

 List all analytics rules 
Get-AzSentinelAlertRule -ResourceGroupName "YourRG" -WorkspaceName "YourWorkspace"

Export rules for backup 
Export-AzSentinelAlertRule -ResourceGroupName "YourRG" -WorkspaceName "YourWorkspace" -OutputFolder "C:\SentinelBackup\" 

4. Azure CLI for Bulk Operations

Check table ingestion status:

az monitor log-analytics workspace table list --resource-group YourRG --workspace-name YourWorkspace --query "[?name=='ThreatIntelIndicators'].name" 

5. Log Analytics Workspace Adjustments

Ensure your Log Analytics Workspace has permissions for the new tables:

az role assignment create --assignee "YourSPN" --role "Log Analytics Contributor" --scope "/subscriptions/YourSub/resourceGroups/YourRG" 

What Undercode Say

Migrating to ThreatIntelIndicators and ThreatIntelObjects ensures future-proofing your Microsoft Sentinel deployment. Key steps:
1. Test queries in a dev workspace before production rollout.

2. Monitor ingestion delays during dual-write phase with:

[kql]
union ThreatIntelligenceIndicator, ThreatIntelIndicators
| summarize count() by $table
[/kql]

3. Leverage ARM templates for automated rule deployments:

"resources": [{ 
"type": "Microsoft.SecurityInsights/alertRules", 
"apiVersion": "2023-02-01", 
"name": "NewThreatIntelRule", 
"properties": { 
"query": "ThreatIntelIndicators | where ..." 
} 
}] 

4. Use Linux `jq` to parse exported rule JSONs:

cat old_rule.json | jq '.properties.query |= sub("ThreatIntelligenceIndicator"; "ThreatIntelIndicators")' > new_rule.json 

Expected Output:

Updated KQL queries, analytic rules, and scripts targeting `ThreatIntelIndicators` and `ThreatIntelObjects` tables without dependency on the legacy schema.

Reference: Microsoft Sentinel Documentation

References:

Reported By: Markolauren Sentinel – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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