Azure storage account was publicly shared

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Azure Audit Log
Detection Modules	Cloud
Detector Tags	Cloud Data Asset Public Exposure, Data Detection & Response
ATT&CK Tactic	Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify Tools (T1685)
Severity	Informational

Description

Azure Storage Account network permissions modified to public, exposing data to any network and unauthorized identities.

Attacker's Goals

• Attackers want to maintain indirect control over the resource.
• Attackers intend to allow public access, making it harder to detect future activity.
• Attackers are constantly monitoring for public assets to steal sensitive information.

Investigative actions

• Check if the storage account should be accessed from all networks.
• Disable public network access if needed.
• Check if the identity performed additional malicious activity and restrict permissions for the identity if required.