Active Directory Forest Recovery: Restoring Identity Infrastructure from Bare Metal
Step-by-step strategies for safely rebuilding compromised Active Directory forests without reintroducing backdoors or ransomware persistence.
The Ultimate Catastrophe: Complete AD Compromise
When ransomware encrypts all Domain Controllers or when attackers gain Golden Ticket persistence across the root domain, restoring a single backup can re-infect the environment within minutes.
Phase 1: Quarantining a Clean Recovery Network
Isolate a dedicated, uninfected recovery network with strict egress firewall rules and zero routing to the compromised environment. Provision clean virtual machines using verified base images.
Phase 2: Authoritative Restoration and Krbtgt Rotation
Restore the primary Domain Controller from verified bare-metal system state backups taken prior to the breach. Immediately reset the `krbtgt` password twice, reset all service account credentials, rotate DSRM passwords, and rebuild trust relationships.
Phase 3: Phased Re-Joining of Cleaned Workstations
Never allow existing workstations to connect back to the restored domain without verified re-imaging or complete offline EDR scans to eliminate resident persistence mechanisms.
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Building Immutable and Air-Gapped Backups to Defeat Modern Ransomware
Architecting WORM storage, isolated management planes, and zero-trust recovery vaults that attackers cannot delete or encrypt.
Digital Forensic Readiness: Ensuring Logs Are Retained, Centralized & Tamper-Proof
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