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CTD-000214

Microsoft Entra agent identity with no active sponsor

High
Entra ID
Persistence

Signature Identity

CTD-000214
Threat ID
Version
IOE
Indicator Type

Threat Description

A Microsoft Entra agent identity with no active sponsor presents a security and governance risk because no active business representative is accountable for its purpose, lifecycle, and access requirements. If the only assigned user sponsors are disabled or otherwise unable to perform their responsibilities, the agent identity can effectively lack the oversight required to determine whether it is still needed and whether its access remains appropriate.

Without an active sponsor, inappropriate access or unexpected agent activity may remain unreviewed for longer, increasing the risk that compromised or unnecessary agent identities continue to operate with existing permissions.

Example: A team creates an agent identity for a pilot project and assigns a single user as its sponsor. The sponsor later leaves the organization, and their account is disabled, but the sponsorship assignment remains. The agent identity continues to operate with its existing permissions. If an attacker subsequently compromises the agent identity, there might be no active sponsor to recognize that its activity or access no longer aligns with its intended business purpose.

MITRE ATT&CK: Attack Tactics

Persistence

D3FEND: Defend Tactics

D3-ACH (Application Configuration Hardening)

Remediation

Assign at least one valid sponsor to the agent identity, remove sponsors that are disabled or no longer responsible for the agent, and verify that the agent identity’s permissions remain appropriate for its intended business purpose.

  1. Sign in to the Microsoft Entra admin center as an Agent ID Administrator or an owner of the agent identity.
  2. Under Entra ID, select Agents, and then select Agent identities.
  3. Select the affected agent identity.
  4. Under Access, select Owners and sponsors.
  5. Review the assigned sponsors. Verify that user sponsors have enabled accounts. For group sponsors, confirm that the group is a supported sponsor type and contains appropriate members.
  6. Select Add, and then select Add sponsor.
  7. Search for and select one or more active users or appropriate supported groups that can assume business responsibility for the agent identity.
  8. Select Add.
  9. Remove user sponsors whose accounts are disabled and any user or group sponsors that are no longer responsible for the agent identity.
  10. Confirm that at least one valid sponsor remains assigned.
  11. Review the permissions assigned to the agent identity and confirm that they are appropriate for its intended business purpose.

Frequently Asked Questions

What does Microsoft Entra agent identity with no active sponsor mean?

A Microsoft Entra agent identity with no active sponsor indicates that no user or group has been assigned as a sponsor, resulting in a lack of oversight and accountability. This can lead to an increased risk of unauthorized access or unexpected activity.

A Microsoft Entra agent identity with no active sponsor is considered high severity because it lacks the necessary oversight and accountability, allowing attackers to potentially access sensitive resources without being detected. This can lead to data breaches, unauthorized changes, or other security incidents.

Attackers can exploit a Microsoft Entra agent identity with no active sponsor by compromising the agent identity and leveraging its existing permissions to access sensitive resources without being detected, due to the lack of monitoring and auditing. This can provide attackers with a means to escalate privileges, move laterally, or exfiltrate data.

Cayosoft Guardian continuously monitors for Microsoft Entra agent identity with no active sponsor and alerts administrators when the condition is detected. This provides visibility into the exposure so security teams can review the finding and determine whether investigation or response is required. Guardian monitors Entra ID for this condition and flags it when detected.

Cayosoft Guardian helps reduce the risk of Microsoft Entra agent identity with no active sponsor by alerting administrators when the condition is detected and providing visibility into the affected accounts, roles, and application permissions. This helps security teams identify exposure more quickly and respond before the issue contributes to a larger security event.

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Classification
Systems
Entra ID
Themes
Enterprise applications
Attack Tactics
Persistence
Defend Tactics
D3-ACH (Application Configuration Hardening)
Indicator Types
IOE
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