Adversaries may attempt to gather information on domain trust relationships that may be used to identify lateral movement opportunities in Windows multi-domain/forest environments. Domain trusts provide a mechanism for a domain to allow access to resources based on the authentication procedures of another domain.^[1] Domain trusts allow the users of the trusted domain to access resources in the trusting domain. The information discovered may help the adversary conduct SID-History Injection, Pass the Ticket, and Kerberoasting.^[2],[3] Domain trusts can be enumerated using the DSEnumerateDomainTrusts() Win32 API call, .NET methods, and LDAP.^[3] The Windows utility Nltest is known to be used by adversaries to enumerate domain trusts.^[4]

References

1. Microsoft. (2009, October 7). Trust Technologies. Retrieved February 14, 2019.
2. Metcalf, S. (2015, July 15). It’s All About Trust – Forging Kerberos Trust Tickets to Spoof Access across Active Directory Trusts. Retrieved February 14, 2019.
3. Schroeder, W. (2017, October 30). A Guide to Attacking Domain Trusts. Retrieved February 14, 2019.
4. Florio, E.. (2017, May 4). Windows Defender ATP thwarts Operation WilySupply software supply chain cyberattack. Retrieved February 14, 2019.

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