Windows System Event: 6281

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Account Management » Windows System Event: 6281

Event ID 6281: Code Integrity determined that the page hashes of an image file are not valid.

Description This event is generated when code Integrity determined that the page hashes of an image file are not valid.
Category System
Subcategory System integrity

Information:

  • Code Integrity is a feature that improves the security of the operating system by validating the integrity of a driver or system file each time it is loaded into memory.
  • Code Integrity detects whether an unsigned driver or system file is being loaded into the kernel, or whether a system file has been modified by malicious software that is being run by a user account with administrative permissions.
  • On x64-based versions of the operating system, kernel-mode drivers must be digitally signed.

Reasons to monitor event:

  • The file could be improperly signed without page hashes or corrupt due to unauthorized modification.
  • This event also generates when signing certificate was revoked. The invalid hashes could indicate a potential disk device error.
  • We recommend monitoring for this event, especially on high value assets or computers, because it can be a sign of a software or configuration issue, or a malicious action.

Event 6281 applies to the following operating systems:

  • Windows Server 2008 R2 and 7
  • Windows Server 2012 R2 and 8.1
  • Windows Server 2016 and 10

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