CHAIN-187 — Azure Monitor action groups inactive

Summary

Severity: Medium · Likelihood: High · Logic: ALL

Why this chain matters

Alerts are configured but the action groups point to mailboxes nobody reads or webhooks to decommissioned systems. The alert fires; the response never comes.

Component rules

This chain fires when its trigger conditions are met by the following rules. Click any rule to see its detection logic and compliance mappings.

Rule ID	Role
zt_vis_004	Trigger
zt_vis_006	Trigger

Attack walkthrough

Step 1 — Fire into dead mailbox / broken webhook.

Actor: Alert
MITRE ATT&CK: T1499
Enabled by: zt_vis_004

Attacker gain: Lost alert.

Step 2 — Continue operating; alert triggered but unseen.

Actor: Attacker
MITRE ATT&CK: T1562
Enabled by: zt_vis_006

Attacker gain: Detection without response.

Blast radius

Initial access	Alert pipeline.
Max privilege	Detection-without-response gap.
Data at risk	Response SLA
Services at risk	IR pipeline

How the logic works

The chain fires only when every rule above has at least one finding in the current scan. Missing any one rule breaks the chain — so remediating any single step disrupts the attack path.