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T1027.004: T1027.004

View on MITRE ATT&CK The MITRE Corporation · Published 16/12/2025 19:38 · Modified 27/03/2026 01:11

Essential information

MITRE technique ID
T1027.004
Confidence
100/100
Revoked
No
Published
16/12/2025 19:38
Modified
27/03/2026 01:11
Author / Source
The MITRE Corporation

Aliases

Compile After Delivery

Platforms

windows macos linux

Description

Adversaries may attempt to make payloads difficult to discover and analyze by delivering files to victims as uncompiled code. Text-based source code files may subvert analysis and scrutiny from protections targeting executables/binaries. These payloads will need to be compiled before execution; typically via native utilities such as ilasm.exe(Citation: ATTACK IQ), csc.exe, or GCC/MinGW.(Citation: ClearSky MuddyWater Nov 2018) Source code payloads may also be encrypted, encoded, and/or embedded within other files, such as those delivered as a [Phishing](https://attack.mitre.org/techniques/T1566). Payloads may also be delivered in formats unrecognizable and inherently benign to the native OS (ex: EXEs on macOS/Linux) before later being (re)compiled into a proper executable binary with a bundled compiler and execution framework.(Citation: TrendMicro WindowsAppMac)

Kill chain phases

Kill chainPhase
mitre-attack defense-evasion

Marking (TLP)

TLP:CLEAR Copyright 2015-2025, The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.

External references