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Part of ASD · Intune · Endpoint security · All checks
```powershell title="Run this check" Invoke-Maester -TestId ASD.ISM-1669 ``` ## Overview Microsoft Office is blocked from injecting code into other processes (ISM-1669, Essential Eight Maturity Level Two, User application hardening). Injecting code into another process lets a macro hide its activity behind a trusted program and evade controls that watch Office. No legitimate document needs it. This check reads the attack surface reduction rules of every Intune Windows configuration policy (Endpoint security and settings catalog policies share the same setting definitions) and passes when an assigned policy sets **Block Office applications from injecting code into other processes** to **Block**. Audit and Warn only report the behaviour and do not satisfy the control. #### Remediation action 1. In **Microsoft Intune admin center**, go to **Endpoint security** > **[Attack surface reduction](https://intune.microsoft.com/#view/Microsoft_Intune_Workflows/SecurityManagementMenu/~/asr)** and open your attack surface reduction rules policy, or create one for **Windows** with the profile **Attack Surface Reduction Rules**. 2. Set **Block Office applications from injecting code into other processes** to **Block**. Pilot the rule in **Audit** first if Office add-ins or line-of-business macros are in use. 3. Assign the policy to all workstations. #### Related links * [Essential Eight maturity model](https://www.cyber.gov.au/business-government/asds-cyber-security-frameworks/essential-eight/essential-eight-maturity-model) * [Attack surface reduction rules reference](https://learn.microsoft.com/defender-endpoint/attack-surface-reduction-rules-reference) * [ISM Guidelines for system hardening](https://www.cyber.gov.au/business-government/asds-cyber-security-frameworks/ism/cyber-security-guidelines/guidelines-system-hardening) ## Details