t1027-009-embedded-payloads

name	T1027.009_embedded-payloads
description	Adversaries may embed payloads within other files to conceal malicious content from defenses.
category	configuration
version	18.1
author	cyberstrike-official
tags	["mitre-attack","enterprise","t1027.009","defense-evasion","linux","macos","windows","sub-technique"]
technique_id	T1027.009
tactic	defense-evasion
all_tactics	["defense-evasion"]
platforms	["Linux","macOS","Windows"]
mitre_url	https://attack.mitre.org/techniques/T1027/009
tech_stack	["linux","macos","windows"]
cwe_ids	["CWE-693"]
chains_with	["T1027","T1027.001","T1027.002","T1027.003","T1027.004","T1027.005","T1027.006","T1027.007","T1027.008","T1027.010","T1027.011","T1027.012","T1027.013","T1027.014","T1027.015","T1027.016","T1027.017"]
prerequisites	["T1027"]
severity_boost	{"T1027":"Chain with T1027 for deeper attack path","T1027.001":"Chain with T1027.001 for deeper attack path","T1027.002":"Chain with T1027.002 for deeper attack path"}

T1027.009 Embedded Payloads

Sub-technique of: T1027

High-Level Description

Adversaries may embed payloads within other files to conceal malicious content from defenses. Otherwise seemingly benign files (such as scripts and executables) may be abused to carry and obfuscate malicious payloads and content. In some cases, embedded payloads may also enable adversaries to Subvert Trust Controls by not impacting execution controls such as digital signatures and notarization tickets.

Adversaries may embed payloads in various file formats to hide payloads. This is similar to Steganography, though does not involve weaving malicious content into specific bytes and patterns related to legitimate digital media formats.

For example, adversaries have been observed embedding payloads within or as an overlay of an otherwise benign binary. Adversaries have also been observed nesting payloads (such as executables and run-only scripts) inside a file of the same format.

Embedded content may also be used as Process Injection payloads used to infect benign system processes. These embedded then injected payloads may be used as part of the modules of malware designed to provide specific features such as encrypting C2 communications in support of an orchestrator module. For example, an embedded module may be injected into default browsers, allowing adversaries to then communicate via the network.

Kill Chain Phase

• Defense Evasion (TA0005)

Platforms: Linux, macOS, Windows

What to Check

• Identify if Embedded Payloads technique is applicable to target environment
• Check Linux systems for indicators of Embedded Payloads
• Check macOS systems for indicators of Embedded Payloads
• Check Windows systems for indicators of Embedded Payloads
• Verify mitigations are bypassed or absent (2 known mitigations)
• Assess detection coverage (1 detection strategies)

How to Test

Manual Testing

1. Identify Attack Surface: Determine if the target environment is susceptible to Embedded Payloads by examining the target platforms (Linux, macOS, Windows).

2. Assess Existing Defenses: Review whether mitigations for T1027.009 are in place. If defenses are absent or misconfigured, this technique may be exploitable.