Adversaries may register a rogue Domain Controller to enable manipulation of Active Directory data. DCShadow may be used to create a rogue Domain Controller (DC). DCShadow is a method of manipulating Active Directory (AD) data, including objects and schemas, by registering (or reusing an inactive registration) and simulating the behavior of a DC. (Citation: DCShadow Blog) Once registered, a rogue DC may be able to inject and replicate changes into AD infrastructure for any domain object, including credentials and keys.

Registering a rogue DC involves creating a new server and nTDSDSA objects in the Configuration partition of the AD schema, which requires Administrator privileges (either Domain or local to the DC) or the KRBTGT hash. (Citation: Adsecurity Mimikatz Guide)

This technique may bypass system logging and security monitors such as security information and event management (SIEM) products (since actions taken on a rogue DC may not be reported to these sensors). (Citation: DCShadow Blog) The technique may also be used to alter and delete replication and other associated metadata to obstruct forensic analysis. Adversaries may also utilize this technique to perform [SID-History Injection](https://attack.mitre.org/techniques/T1134/005) and/or manipulate AD objects (such as accounts, access control lists, schemas) to establish backdoors for Persistence. (Citation: DCShadow Blog)
Rogue Domain Controller
source_name: mitre-attack  url: https://attack.mitre.org/techniques/T1207  external_id: T1207     source_name: DCShadow Blog  description: Delpy, B. & LE TOUX, V. (n.d.). DCShadow. Retrieved March 20, 2018.  url: https://www.dcshadow.com/     source_name: Adsecurity Mimikatz Guide  description: Metcalf, S. (2015, November 13). Unofficial Guide to Mimikatz & Command Reference. Retrieved December 23, 2015.  url: https://adsecurity.org/?page_id=1821     source_name: GitHub DCSYNCMonitor  description: Spencer S. (2018, February 22). DCSYNCMonitor. Retrieved March 30, 2018.  url: https://github.com/shellster/DCSYNCMonitor     source_name: Microsoft DirSync  description: Microsoft. (n.d.). Polling for Changes Using the DirSync Control. Retrieved March 30, 2018.  url: https://msdn.microsoft.com/en-us/library/ms677626.aspx     source_name: ADDSecurity DCShadow Feb 2018  description: Lucand,G. (2018, February 18). Detect DCShadow, impossible?. Retrieved March 30, 2018.  url: https://adds-security.blogspot.fr/2018/02/detecter-dcshadow-impossible.html     