AMSI Protection

AMSI Protection component is intended to support Antimalware Scan Interface from Microsoft. The Antimalware Scan Interface (AMSI) allows third-party applications with AMSI support to send objects (for example, PowerShell scripts) to Kaspersky Endpoint Security for an additional scan and then receive the results from scanning these objects. Third-party applications may include, for example, Microsoft Office applications (see the figure below). For details on AMSI refer to Microsoft documentation.

The AMSI Protection can only detect a threat and notify a third-party application about the detected threat. Third-party application after receiving a notification of a threat does not allow to perform malicious actions (for example, terminates).

AMSI operation example

AMSI Protection component may decline a request from a third-party application, for example, if this application exceeds maximum number of requests within a specified interval. Kaspersky Endpoint Security sends information about a rejected request from a third-party application to the Administration Server. AMSI Protection component does not reject requests from those third-party applications for which the Do not block interaction with AMSI Protection Provider check box is selected

AMSI Protection is available for the following operating systems for workstations and servers:

• Windows 10 Home / Pro / Pro for Workstations / Education / Enterprise;
• Windows Server 2016 Essentials / Standard / Datacenter;
• Windows Server 2019 Essentials / Standard / Datacenter.

  AMSI Protection Provider component settings

  Parameter	Description
  Scan archives	Scans archives in the following formats: RAR, ARJ, ZIP, CAB, LHA, JAR, and ICE.
  Scan distribution packages	This check box enables/disables scanning of third-party distribution packages.
  Scan files in Microsoft Office formats	Scans Microsoft Office files (DOC, DOCX, XLS, PPT and other Microsoft extensions). Office format files include OLE objects as well.
  Do not unpack large compound files	If this check box is selected, Kaspersky Endpoint Security does not scan compound files if their size exceeds the specified value. If this check box is cleared, Kaspersky Endpoint Security scans compound files of all sizes. Kaspersky Endpoint Security scans large files that are extracted from archives regardless of whether the check box is ticked or not.