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Attack Surface Reduction Rule for Hybrid implementation type

Open ob1kxb opened this issue 2 years ago • 0 comments

Current design:

Client devices (desktop.gov.au) with probably more references

Windows 10 hardening The following design components apply to the hardening of Microsoft Windows 10 21H1 and above.

The Windows 10 security settings detailed in this section are based on Microsoft best practice and the ACSC Hardening Microsoft >Windows 10 version 21H1 Workstations (Oct-2021) guidance.

Windows 10 Hardening Design Decisions for all agencies and implementation types.

Attack Surface Reduction Justification: To align with the ACSC Windows 10 hardening guidance. Attack Surface Reduction rules – Enabled (BE9BA2D9-53EA-4CDC-84E5-9B1EEEE46550,D4F940AB-401B-4EFC-AADC->AD5F3C50688A,3B576869-A4EC-4529-8536-B80A7769E899,75668C1F-73B5-4CF0-BB93-3ECF5CB7CC84,D3E037E1-3EB8-44C8-A917-57927947596D,5BEB7EFE-FD9A-4556-801D-275E5FFC04CC,92E97FA1-2EDF-4476-BDD6-9DD0B4DDDC7B,01443614-CD74-433A-B99E-2ECDC07BFC25E,C1DB55AB-C21A-4637-BB3F-A12568109D35,9E6C4E1F-7D60-472F-BA1A-A39EF669E4B2,D1E49AAC-8F56-4280-B9BA-993A6D77406C,B2B3F03D-6A65-4F7B-A9C7-1C7EF74A9BA4,26190899-1602-49E8-8B27-EB1D0A1CE869,7674BA52-37EB-4A4F-A9A1-F0F9A1619A2C,E6DB77E5-3DF2-4CF1-B95A-636979351E5B)

Rule D1E49AAC-8F56-4280-B9BA-993A6D77406C ="Block process creations originating from PSExec and WMI commands"

As per MS recommendation is NOT to enable this rule for Microsoft Endpoint Managed devices as core functions will break such as AppV application installations. Attack Surface Reduction FAQ | Microsoft Docs

We recommend enabling every possible rule. However, there are some cases where you shouldn't enable a rule. For example, we don't recommend enabling the Block process creations originating from PSExec and WMI commands rule, if you're using Microsoft Endpoint Configuration Manager (or, System Center Configuration Manager - SCCM) to manage your endpoints.

ob1kxb avatar Jul 24 '22 22:07 ob1kxb