t1521-001-symmetric-cryptography

name	T1521.001_symmetric-cryptography
description	Adversaries may employ a known symmetric encryption algorithm to conceal command and control traffic, rather than relying on any inherent protections provided by a communication protocol.
category	configuration
version	18.1
author	cyberstrike-official
tags	["mitre-attack","mobile","t1521.001","command-and-control","android","ios","sub-technique"]
technique_id	T1521.001
tactic	command-and-control
all_tactics	["command-and-control"]
platforms	["Android","iOS"]
mitre_url	https://attack.mitre.org/techniques/T1521/001
tech_stack	["android","ios"]
cwe_ids	["CWE-300"]
chains_with	["T1521","T1521.002","T1521.003"]
prerequisites	["T1521"]
severity_boost	{"T1521":"Chain with T1521 for deeper attack path","T1521.002":"Chain with T1521.002 for deeper attack path","T1521.003":"Chain with T1521.003 for deeper attack path"}

T1521.001 Symmetric Cryptography

Sub-technique of: T1521

High-Level Description

Adversaries may employ a known symmetric encryption algorithm to conceal command and control traffic, rather than relying on any inherent protections provided by a communication protocol. Symmetric encryption algorithms use the same key for plaintext encryption and ciphertext decryption. Common symmetric encryption algorithms include AES, Blowfish, and RC4.

Kill Chain Phase

• Command and Control (TA0037)

Platforms: Android, iOS

What to Check

• Identify if Symmetric Cryptography technique is applicable to target mobile environment
• Check Android devices for indicators of Symmetric Cryptography
• Check iOS devices for indicators of Symmetric Cryptography
• Assess detection coverage (1 detection strategies)

How to Test

Identify Attack Surface

Determine if the target mobile environment is susceptible to Symmetric Cryptography by examining the target platforms (Android, iOS).

Assess Existing Defenses

Review whether mitigations for T1521.001 are in place. If defenses are absent or misconfigured, this technique may be exploitable.

Remediation Guide

No specific mitigations documented for this technique.

Detection

Detection of Symmetric Cryptography

Risk Assessment

Finding	Severity	Impact
Symmetric Cryptography technique applicable	Low	Command And Control

CWE Categories

CWE ID	Title
CWE-300	Channel Accessible by Non-Endpoint

References

• MITRE ATT&CK Mobile - T1521.001