![]() ![]() More importantly, we’re exposing this capability through AMSI, an open interface, making it accessible to any antivirus solution.ĪMSI integration is now available and turned on by default on the Monthly Channel for Office 365 client applications including Word, Excel, PowerPoint, Access, Visio, and Publisher. We’re bringing this instrumentation directly into Office 365 client applications. To counter this threat, we invested in building better detection mechanisms that expose macro behaviour through runtime instrumentation within our threat protection solutions in the cloud. Malicious macros have since showed up in commodity malware campaigns, targeted attacks, and in red-team activities. ![]() All files located in the Program Files folder. Right click in Executable Rules and select Create Default Rules. Go in Computer ConfigurationWindows SettingsSecurity SettingsApplication Control PoliciesApplocker. Microsoft, along with the rest of the industry, observed attackers transition from exploits to using malicious macros to infect endpoints. Right click in the new Policy and select Edit. If you don’t have the proper licensing but you still want to restrict access to the Microsoft Store, you could configure some Applocker Store App Rules. Continuous improvements in platform and application security have led to the decline of software exploits, and attackers have found a viable alternative infection vector in social engineering attacks that abuse functionalities like VBA macros. The Require Private Store device configuration profile will block all access to the Microsoft Store in Windows 11 2. Macro-based threats have always been a prevalent entry point for malware, but we have observed a resurgence in recent years. As part of our continued efforts to tackle entire classes of threats, Office 365 client applications now integrate with Antimalware Scan Interface (AMSI), enabling antivirus and other security solutions to scan macros and other scripts at runtime to check for malicious behaviour. ![]()
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