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MediumElastic detection rulesAustin Songer +1

AWS Route 53 Private Hosted Zone Associated With a VPC

Identifies when an AWS Route 53 private hosted zone is associated with a new Virtual Private Cloud (VPC). Private hosted zones restrict DNS resolution to specific VPCs, and associating additional VPCs expands the…

Description

Identifies when an AWS Route 53 private hosted zone is associated with a new Virtual Private Cloud (VPC). Private hosted zones restrict DNS resolution to specific VPCs, and associating additional VPCs expands the scope of what networks can resolve internal DNS records. Adversaries with sufficient permissions may associate unauthorized VPCs to intercept, observe, or reroute internal traffic, establish persistence, or expand their visibility within an AWS environment.

Detection logic

Its licence does not clear it for publishing here

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Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuitePRESaaSWindows

The rule states no platform. This is derived from the 3 ATT&CK techniques it maps to.

Log source category
event_index

Known benign triggers

  • Private hosted zones may be legitimately associated with VPCs by network or infrastructure administrators. Verify whether the user identity, user agent, and source IP address align with expected administrative behavior. Known and authorized associations may be exempted to reduce noise.

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