NightEagle DCSync Attack via Directory Replication from Non-DC Host

Ibrahim Saud@tektrix

•updated Sep 17, 2026•0•0•2

Detects unauthorized directory replication requests (DRSGetNCChanges or DRSReplicaSync) originating from a host that is not identified as a Domain Controller. This behavior is indicative of a DCSync attack, where an adversary impersonates a domain controller to extract credential hashes from the Active Directory database.