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TA0002 · EXECUTION

Inter-Process Communication

T1559Windows · macOS · Linuxattack.mitre.org

Adversaries may abuse inter-process communication (IPC) mechanisms for local code or command execution. IPC is typically used by processes to share data, communicate with each other, or synchronize execution.

Detect it with

Monitor for strings in files/commands, loaded DLLs/libraries, or spawned processes that are associated with abuse of IPC mechanisms.

Why it matters on shift

Inter-Process Communication is one of the concrete ways adversaries achieve execution. Recognising it in telemetry lets you name the technique in your ticket and pivot to what came before and after.

What to look for next

After execution, the next tactic is usually Persistence. Search your telemetry for the transition before closing the ticket.

3 sub-techniques

How it shows up in practice

  1. T1559.001

    Component Object Model

    Adversaries may use the Windows Component Object Model (COM) for local code execution.

  2. T1559.002

    Dynamic Data Exchange

    Adversaries may use Windows Dynamic Data Exchange (DDE) to execute arbitrary commands. DDE is a client-server protocol for one-time and/or continuous inter-process communication (IPC) between applications.

  3. T1559.003

    XPC Services

    Adversaries can provide malicious content to an XPC service daemon for local code execution.

Kill-chain context

← beforeInitial AccessExecutionafter →Persistence