Detectionmediumtest
Azure Suppression Rule Created
Identifies when a suppression rule is created in Azure. Adversary's could attempt this to evade detection.
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Log Source
Azureactivitylogs
ProductAzure← raw: azure
Serviceactivitylogs← raw: activitylogs
Detection Logic
Detection Logic1 selector
detection:
selection:
operationName: MICROSOFT.SECURITY/ALERTSSUPPRESSIONRULES/WRITE
condition: selectionFalse Positives
Suppression Rule being created may be performed by a system administrator.
Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
Suppression Rule created from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
References
MITRE ATT&CK
Tactics
Rule Metadata
Rule ID
92cc3e5d-eb57-419d-8c16-5c63f325a401
Status
test
Level
medium
Type
Detection
Created
Mon Aug 16
Modified
Tue Aug 23
Author
Path
rules/cloud/azure/activity_logs/azure_suppression_rule_created.yml
Raw Tags
attack.impact