Techniques
Sample rules
Azure Storage Account Blob Public Access Enabled
- source: elastic
- technicques:
- T1530
Description
Identifies when Azure Storage Account Blob public access is enabled, allowing external access to blob containers. This technique was observed in cloud ransom-based campaigns where threat actors modified storage accounts to expose non-remotely accessible accounts to the internet for data exfiltration. Adversaries abuse the Microsoft.Storage/storageAccounts/write operation to modify public access settings.
Detection logic
event.dataset: "azure.activitylogs" and
event.action: "MICROSOFT.STORAGE/STORAGEACCOUNTS/WRITE" and
event.outcome: "success" and
azure.activitylogs.properties.responseBody: *\"allowBlobPublicAccess\"\:true*