Restricting registry permissions involves configuring access control settings for sensitive registry keys and hives to ensure that only authorized users or processes can make modifications. By limiting access, organizations can prevent unauthorized changes that adversaries might use for persistence, privilege escalation, or defense evasion.

• Regularly review permissions on keys such as Run, RunOnce, and Services to ensure only authorized users have write access.
• Use tools like icacls or PowerShell to automate permission adjustments. Enable Registry Auditing.
• Enable auditing on sensitive keys to log access attempts.
• Use Event Viewer or SIEM solutions to analyze logs and detect suspicious activity.
• Example Audit Policy: auditpol /set /subcategory:"Registry" /success:enable /failure:enable Protect Credential-Related Hives.
• Limit access to hives like SAM,SECURITY, and SYSTEM to prevent credential dumping or other unauthorized access.
• Use LSA Protection to add an additional security layer for credential storage. Restrict Registry Editor Usage.
• Use Group Policy to restrict access to regedit.exe for non-administrative users.
• Block execution of registry editing tools on endpoints where they are unnecessary. Deploy Baseline Configuration Tools.
• Use tools like Microsoft Security Compliance Toolkit or CIS Benchmarks to apply and maintain secure registry configurations.

• Registry Editor (regedit): Built-in tool to manage registry permissions.
• PowerShell: Automate permissions and manage keys. Set-ItemProperty -Path "HKLM:\Software\Microsoft\Windows\CurrentVersion\Run" -Name "KeyName" -Value "Value".
• icacls: Command-line tool to modify ACLs.

• Sysmon: Monitor and log registry events.
• Event Viewer: View registry access logs.

• Group Policy Management Console (GPMC): Enforce registry permissions via GPOs.
• Microsoft Endpoint Manager: Deploy configuration baselines for registry permissions.

Privileged Account Management focuses on implementing policies, controls, and tools to securely manage privileged accounts (e.g., SYSTEM, root, or administrative accounts). This includes restricting access, limiting the scope of permissions, monitoring privileged account usage, and ensuring accountability through logging and auditing.

• Implement RBAC and least privilege principles to allocate permissions securely.
• Use tools like Active Directory Group Policies to enforce access restrictions.

• Deploy password vaulting tools like CyberArk, HashiCorp Vault, or KeePass for secure storage and rotation of credentials.
• Enforce password policies for complexity, uniqueness, and expiration using tools like Microsoft Group Policy Objects (GPO).

• Enforce MFA for all privileged accounts using Duo Security, Okta, or Microsoft Azure AD MFA.

• Use PAM solutions like CyberArk, BeyondTrust, or Thycotic to manage, monitor, and audit privileged access.

• Integrate activity monitoring into your SIEM (e.g., Splunk or QRadar) to detect and alert on anomalous privileged account usage.

• Deploy JIT solutions like Azure Privileged Identity Management (PIM) or configure ephemeral roles in AWS and GCP to grant time-limited elevated permissions.

• CyberArk, BeyondTrust, Thycotic, HashiCorp Vault.

• Microsoft LAPS (Local Admin Password Solution), Password Safe, HashiCorp Vault, KeePass.

• Duo Security, Okta, Microsoft Azure MFA, Google Authenticator.

• sudo configuration, SELinux, AppArmor.

• Azure Privileged Identity Management (PIM), AWS IAM Roles with session constraints, GCP Identity-Aware Proxy.

Boot Integrity ensures that a system starts securely by verifying the integrity of its boot process, operating system, and associated components. This mitigation focuses on leveraging secure boot mechanisms, hardware-rooted trust, and runtime integrity checks to prevent tampering during the boot sequence. It is designed to thwart adversaries attempting to modify system firmware, bootloaders, or critical OS components.

• Implementation: Enable UEFI Secure Boot on all systems and configure it to allow only signed bootloaders and operating systems.
• Use Case: An adversary attempts to replace the system’s bootloader with a malicious version to gain persistence. Secure Boot prevents the untrusted bootloader from executing, halting the attack.

• Implementation: Configure systems to use TPM-based attestation for boot integrity, ensuring that any modification to the firmware, bootloader, or OS is detected.
• Use Case: A compromised firmware component alters the boot sequence. The TPM detects the change and triggers an alert, allowing the organization to respond before further damage.

• Implementation: Protect BIOS/UEFI settings with a strong password and limit physical access to devices.
• Use Case: An attacker with physical access attempts to disable Secure Boot or modify the boot sequence. The password prevents unauthorized changes.

• Implementation: Deploy solutions to verify the integrity of critical files and processes after boot.
• Use Case: A malware infection modifies kernel modules post-boot. Runtime integrity monitoring detects the modification and prevents the malicious module from loading.