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Enable OLE Scan for Attachment Blocking to detect embedded EXE files in PortalProtect

    • Updated:
    • 18 Jul 2019
    • Product/Version:
    • PortalProtect 2.5
    • Platform:
    • N/A N/A
Summary

PortalProtect is not able to detect application/executable files when they are embedded as an object inside a Microsoft Word/Excel file.

This is an expected scenario because the Attachment Blocking OLE Scan feature is disabled by default.

Details
Public

To resolve the issue, enable the Attachment Blocking OLE Scan feature:

  1. Open the Registry Editor.
  2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PortalProtect\CurrentVersion.
  3. Modify/Create the following key:

    Name: ABOLEScanLayer (to enable OLE Scan feature)
    Type: Dword (32Bit Value)
    Value: 0 – 20

    Where:

    0: means disabled
    1-20: means enabled & max scan layer

    Example:

    ABOLEScanLayer = 1

  4. You can also specify the file types to be scanned for OLE:
    1. Add the registry below:

      Path: [HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PortalProtect\CurrentVersion]
      Key: ABOLEContainerTypes (to specify file types to be Scanned for OLE)
      Type: REG_SZ
      Value: ";" separated VSAPI file types (e.g. 1;2;4)

      ABOLEContainerTypes, string, type ID list of VSAPI supported OLE container files. The default value is “1;2;4;30;4045;6015”:

      1 = Word
      2 = PowerPoint
      4 = Excel
      30 = Project
      4045 = Office 2007 files
      6015 = pdf

    2. If you want to support a ZIP file as an OLE container file, add "4003" to ABOLEContainerTypes.

      Example:

      ABOLEContainerTypes=1;2;4;30;4045;6015;4003

    3. Restart PP_Master service.
  5. It is necessary to enable "Block file types or names within compressed files" in the Attachment Blocking policy from the PortalProtect web UI for this to take effect.

By default, Attachment Blocking OLE Scan will check the following file types:

  • Word
  • Powerpoint
  • Excel
  • Project
  • Office 2007 files
  • PDF

To customize which file types will be scanned, perform the following steps:

  1. In the Registry Editor, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PortalProtect\CurrentVersion
  2. Create the following key:

    Name: ABOLEContainerTypes (to specify file types to be Scanned for OLE)
    Type: REG_SZ
    Value:

    ValueFile Type
    1Word
    2Powerpoint
    4Excel
    30Project
    4045Office 2007 files
    6015pdf
     
    Separate multiple values using semi-colon (;).
Premium
Internal
Rating:
Category:
Configure
Solution Id:
1122675
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