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TECHNIQUES
PRE-ATT&CK
Priority Definition Planning
Priority Definition Direction
Target Selection
Technical Information Gathering
People Information Gathering
Organizational Information Gathering
Technical Weakness Identification
People Weakness Identification
Organizational Weakness Identification
Adversary OPSEC
Establish & Maintain Infrastructure
Persona Development
Build Capabilities
Test Capabilities
Stage Capabilities
Enterprise
Initial Access
Phishing
Supply Chain Compromise
Valid Accounts
Execution
Command and Scripting Interpreter
Inter-Process Communication
Scheduled Task/Job
System Services
User Execution
Persistence
Account Manipulation
Boot or Logon Autostart Execution
Boot or Logon Initialization Scripts
Create Account
Create or Modify System Process
Event Triggered Execution
Hijack Execution Flow
Office Application Startup
Pre-OS Boot
Scheduled Task/Job
Server Software Component
Traffic Signaling
Valid Accounts
Privilege Escalation
Abuse Elevation Control Mechanism
Access Token Manipulation
Boot or Logon Autostart Execution
Boot or Logon Initialization Scripts
Create or Modify System Process
Event Triggered Execution
Hijack Execution Flow
Process Injection
Scheduled Task/Job
Valid Accounts
Defense Evasion
Abuse Elevation Control Mechanism
Access Token Manipulation
Execution Guardrails
File and Directory Permissions Modification
Hide Artifacts
Hijack Execution Flow
Impair Defenses
Indicator Removal on Host
Masquerading
Modify Authentication Process
Modify Cloud Compute Infrastructure
Obfuscated Files or Information
Pre-OS Boot
Process Injection
Signed Binary Proxy Execution
Signed Script Proxy Execution
Subvert Trust Controls
Traffic Signaling
Trusted Developer Utilities Proxy Execution
Use Alternate Authentication Material
Valid Accounts
Virtualization/Sandbox Evasion
Credential Access
Brute Force
Credentials from Password Stores
Input Capture
Man-in-the-Middle
Modify Authentication Process
OS Credential Dumping
Steal or Forge Kerberos Tickets
Unsecured Credentials
Discovery
Account Discovery
Permission Groups Discovery
Software Discovery
Virtualization/Sandbox Evasion
Lateral Movement
Remote Service Session Hijacking
Remote Services
Use Alternate Authentication Material
Collection
Archive Collected Data
Data from Information Repositories
Data Staged
Email Collection
Input Capture
Man-in-the-Middle
Command and Control
Application Layer Protocol
Data Encoding
Data Obfuscation
Dynamic Resolution
Encrypted Channel
Proxy
Traffic Signaling
Web Service
Exfiltration
Exfiltration Over Alternative Protocol
Exfiltration Over Other Network Medium
Exfiltration Over Physical Medium
Exfiltration Over Web Service
Impact
Data Manipulation
Defacement
Disk Wipe
Endpoint Denial of Service
Network Denial of Service
Mobile
Initial Access
Execution
Persistence
Privilege Escalation
Defense Evasion
Credential Access
Discovery
Lateral Movement
Collection
Command and Control
Exfiltration
Impact
Network Effects
Remote Service Effects
  1. Home
  2. Techniques
  3. Mobile
  4. Uncommonly Used Port

Uncommonly Used Port

Adversaries may use non-standard ports to exfiltrate information.

ID: T1509
Sub-techniques:  No sub-techniques
Tactic Type: Post-Adversary Device Access
Tactic: Command And Control
Platforms: Android, iOS
Version: 1.0
Created: 01 August 2019
Last Modified: 11 September 2019

Procedure Examples

Name Description
Cerberus

Cerberus communicates with the C2 over port 8888.[4]
Exodus

Exodus Two attempts to connect to port 22011 to provide a remote reverse shell.[2]
FlexiSpy

FlexiSpy can communicate with the command and control server over ports 12512 and 12514.[1]
INSOMNIA

INSOMNIA has communicated with the C2 over TCP ports 43111, 43223, and 43773.[3]

Mitigations

Mitigation Description
Application Vetting

Application vetting reports may show network communications performed by the application, including hosts, ports, protocols, and URLs.

Detection

Detection would most likely be at the enterprise level, through packet and/or netflow inspection. Many properly configured firewalls may also naturally block command and control traffic over non-standard ports.

References

  1. K. Lu. (n.d.). Deep Technical Analysis of the Spyware FlexiSpy for Android. Retrieved September 10, 2019.
  2. Security Without Borders. (2019, March 29). Exodus: New Android Spyware Made in Italy. Retrieved September 3, 2019.
  1. A. Case, D. Lassalle, M. Meltzer, S. Koessel, et al.. (2020, April 21). Evil Eye Threat Actor Resurfaces with iOS Exploit and Updated Implant. Retrieved June 2, 2020.
  2. A. Hazum, B. Melnykov, C. Efrati, D. Golubenko, I. Wernik, L. Kuperman, O. Mana. (2020, April 29). First seen in the wild – Malware uses Corporate MDM as attack vector. Retrieved June 26, 2020.