Data Manipulation: Runtime Data Manipulation

Adversaries may modify systems in order to manipulate the data as it is accessed and displayed to an end user, thus threatening the integrity of the data.[1][2] By manipulating runtime data, adversaries may attempt to affect a business process, organizational understanding, and decision making.

Adversaries may alter application binaries used to display data in order to cause runtime manipulations. Adversaries may also conduct Change Default File Association and Masquerading to cause a similar effect. The type of modification and the impact it will have depends on the target application and process as well as the goals and objectives of the adversary. For complex systems, an adversary would likely need special expertise and possibly access to specialized software related to the system that would typically be gained through a prolonged information gathering campaign in order to have the desired impact.

ID: T1565.003
Sub-technique of:  T1565
Tactic: Impact
Platforms: Linux, Windows, macOS
Permissions Required: Administrator, SYSTEM, User, root
Impact Type: Integrity
Version: 1.1
Created: 02 March 2020
Last Modified: 25 March 2022

Procedure Examples

ID Name Description
G0082 APT38

APT38 has used DYEPACK.FOX to manipulate PDF data as it is accessed to remove traces of fraudulent SWIFT transactions from the data displayed to the end user.[1]


ID Mitigation Description
M1030 Network Segmentation

Identify critical business and system processes that may be targeted by adversaries and work to isolate and secure those systems against unauthorized access and tampering.

M1022 Restrict File and Directory Permissions

Prevent critical business and system processes from being replaced, overwritten, or reconfigured to load potentially malicious code.


ID Data Source Data Component Detects
DS0022 File File Creation

Monitor for newly constructed files in order to manipulate external outcomes or hide activity

File Deletion

Monitor for unexpected deletion of a file in order to manipulate external outcomes or hide activity

File Metadata

Monitor for contextual data about a file, which may include information such as name, the content (ex: signature, headers, or data/media), user/owner, permissions, etc that would aid in the manipulation of data to hide activity

File Modification

Monitor for unexpected files with manipulated data in order to manipulate external outcomes or hide activity

DS0009 Process OS API Execution

Monitor for API calls associated with altering data. Remote access tools with built-in features may interact directly with the Windows API to gather information.