Description
Identifies a Vaikora for O365 engine outage by absent quarantine telemetry. Fires when a tenant active in the last 24 hours has sent no rows in the last two hours, indicating the customer VM is unhealthy or the Graph subscription has lapsed.
- Rule type
- Scheduled
- Version
- 1.0.0
- Declared status
- Available
- Query frequency
- 30m
- Query period
- 1d
- Trigger
- gt 0
Declared MITRE coverage
Declared sources
Metadata from the source file. No dependencies inferred from KQL.
Connectors
Data types
KQL query
Original query, unchanged.
let recentTenants = toscalar(
VaikoraO365_Quarantine_CL
| where TimeGenerated >= ago(2h)
| summarize make_set(TenantId_s)
);
VaikoraO365_Quarantine_CL
| where TimeGenerated between (ago(1d) .. ago(2h))
| summarize LastSeen = max(TimeGenerated) by TenantId_s
| where TenantId_s !in (recentTenants)
| project TimeGenerated = now(), TenantId = TenantId_s, LastSeen, HoursOffline = (now() - LastSeen) / 1h
Declared entities
Related content
Links established from declared identifiers and solution manifests.
Source provenance
GitHubDisplayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.
- Commit
9800e51↗- Source identifier
968b70c1-b468-418a-ac02-1eb74783a52a
GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC