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Azure DevOps Agent Pool Created Then Deleted

As well as adding build agents to an existing pool to execute malicious activity within a pipeline, an attacker could create a complete new agent pool and use this for execution. Azure DevOps allows for the creation…

Description

As well as adding build agents to an existing pool to execute malicious activity within a pipeline, an attacker could create a complete new agent pool and use this for execution. Azure DevOps allows for the creation of agent pools with Azure hosted infrastructure or self-hosted infrastructure. Given the additional customizability of self-hosted agents this detection focuses on the creation of new self-hosted pools. To further reduce false positive rates the detection looks for pools created and deleted relatively quickly (within 7 days by default), as an attacker is likely to remove a malicious pool once used in order to reduce/remove evidence of their activity.

Detection logic

Detection requirements

Platform
IaaS

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

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