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reports/trr0000/azr/README.md

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@@ -40,8 +40,8 @@ certificate. The modified domain trust authorizes the attacker's IdP to issue
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signed tokens that Entra accepts. Because federation trust in Entra is
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tenant-wide, a single modified domain enables the attacker to authenticate as
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any user in the tenant without knowing those users' credentials. This technique
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was employed for persistence in the SolarWinds (APT29) and Octo Tempest
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intrusion campaigns.
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was employed for persistence in the SolarWinds (APT29)[^2] and Octo
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Tempest/Scattered Spider[^3] intrusion campaigns.
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## Technical Background
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#### Detection Data Model
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![DDM - Modify existing federated domain](ddms/TRR0000_azr_a.png)
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![DDM - Modify existing federated domain](ddms/trr0000_azr_a.png)
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The procedure consists of a single essential operation: modifying the federation
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configuration of a verified, federated target domain.
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#### Detection Data Model
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![DDM - Add and federate new domain](ddms/TRR0000_azr_b.png)
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![DDM - Add and federate new domain](ddms/trr0000_azr_b.png)
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The `Publish DNS Record` prerequisite is shown in gray to indicate that it
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occurs at an external location and is not observable from within the tenant.
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- [AADInternals FederatedIdentityTools - GitHub]
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[^1]: [Golden SAML Attack - CyberArk]
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[^2]: [Guidance On Recent Nation State Attacks (SolarWinds) - Microsoft]
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[^3]: [Octo Tempest crosses boundaries to facilitate extortion, encryption, and destruction - Microsoft]
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[T1484.002]: https://attack.mitre.org/techniques/T1484/002/
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[T1556.007]: https://attack.mitre.org/techniques/T1556/007/
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[Remediation and hardening strategies for Microsoft 365 to defend against APT29 - Mandiant]: https://www.mandiant.com/resources/remediation-and-hardening-strategies-microsoft-365-defend-against-apt29-v13
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[Detecting Microsoft 365 and Azure Active Directory backdoors - Mandiant]: https://www.mandiant.com/resources/blog/detecting-microsoft-365-azure-active-directory-backdoors
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[AADInternals FederatedIdentityTools - GitHub]: https://github.com/Gerenios/AADInternals/blob/master/FederatedIdentityTools.ps1
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[Golden SAML Attack - CyberArk]: https://www.cyberark.com/resources/threat-research-blog/golden-saml-newly-discovered-attack-technique-forges-authentication-to-cloud-apps
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[Golden SAML Attack - CyberArk]: https://www.cyberark.com/resources/threat-research-blog/golden-saml-newly-discovered-attack-technique-forges-authentication-to-cloud-apps
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[Guidance On Recent Nation State Attacks (SolarWinds) - Microsoft]: https://www.microsoft.com/en-us/msrc/blog/2020/12/customer-guidance-on-recent-nation-state-cyber-attacks
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