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Home/ATT&CK/T1052/T1052.001
MITRE ATT&CK Sub-Technique

T1052.001: Exfiltration over USB

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Adversaries may attempt to exfiltrate data over a USB connected physical device. In certain circumstances, such as an air-gapped network compromise, exfiltration could occur via a USB device introduced by a user. The USB device could be used as the final exfiltration point or to hop between otherwise disconnected systems.

Tactics
Exfiltration
Platforms
Linux, Windows, macOS

▪Parent technique

T1052: Exfiltration Over Physical Medium

▪Mitigations (3)

M1034Limit Hardware Installation

Prevent unauthorized users or groups from installing or using hardware, such as external drives, peripheral devices, or unapproved internal hardware components, by enforcing hardware usage policies and technical controls. This includes disabling USB ports, restricting driver installation, and implementing endpoint security tools to monitor and block unapproved devices. This mitigation can be implemented through the following measures: Disable USB Ports and Hardware Installation Policies: - Use Group Policy Objects (GPO) to disable USB mass storage devices: - Navigate to Computer Configuration > Administrative Templates > System > Removable Storage Access. - Deny write and read access to USB devices. - Whitelist approved devices using unique serial numbers via Windows Device Installation Policies. Deploy Endpoint Protection and Device Control Solutions: - Use tools like Microsoft Defender for Endpoint, Symantec Endpoint Protection, or Tanium to monitor and block unauthorized hardware. - Implement device control policies to allow specific hardware types (e.g., keyboards, mice) and block others. Harden BIOS/UEFI and System Firmware: - Set strong passwords for BIOS/UEFI access. - Enable Secure Boot to prevent rogue hardware components from loading unauthorized firmware. Restrict Peripheral Devices and Drivers: - Use Windows Device Manager Policies to block installation of unapproved drivers. - Monitor hardware installation attempts through endpoint monitoring tools. Disable Bluetooth and Wireless Hardware: - Use GPO or MDM tools to disable Bluetooth and Wi-Fi interfaces across systems. - Restrict hardware pairing to approved devices only. Logging and Monitoring: - Enable logging for hardware installation events in Windows Event Logs (Event ID 20001 for Device Setup Manager). - Use SIEM solutions (e.g., Splunk, Elastic Stack) to detect unauthorized hardware installation activities. *Tools for Implementation* USB and Device Control: - Microsoft Group Policy Objects (GPO) - Microsoft Defender for Endpoint - Symantec Endpoint Protection - McAfee Device Control Endpoint Monitoring: - EDRs - OSSEC (open-source host-based IDS) Hardware Whitelisting: - BitLocker for external drives (Windows) - Windows Device Installation Policies - Device Control BIOS/UEFI Security: - Secure Boot (Windows/Linux) Firmware management tools like Dell Command Update or HP Sure Start

▪Used by groups (2)

G0081Tropic TrooperG0129Mustang Panda

▪Software using this technique (5)

S0035SPACESHIPmalwareS0092Agent.btzmalware

▪Reference

T1052.001 on MITRE ATT&CK
M1057Data Loss Prevention

Data Loss Prevention (DLP) involves implementing strategies and technologies to identify, categorize, monitor, and control the movement of sensitive data within an organization. This includes protecting data formats indicative of Personally Identifiable Information (PII), intellectual property, or financial data from unauthorized access, transmission, or exfiltration. DLP solutions integrate with network, endpoint, and cloud platforms to enforce security policies and prevent accidental or malicious data leaks. (Citation: PurpleSec Data Loss Prevention) This mitigation can be implemented through the following measures: Sensitive Data Categorization: - Use Case: Identify and classify data based on sensitivity (e.g., PII, financial data, trade secrets). - Implementation: Use DLP solutions to scan and tag files containing sensitive information using predefined patterns, such as Social Security Numbers or credit card details. Exfiltration Restrictions: - Use Case: Prevent unauthorized transmission of sensitive data. - Implementation: Enforce policies to block unapproved email attachments, unauthorized USB usage, or unencrypted data uploads to cloud storage. Data-in-Transit Monitoring: - Use Case: Detect and prevent the transmission of sensitive data over unapproved channels. - Implementation: Deploy network-based DLP tools to inspect outbound traffic for sensitive content (e.g., financial records or PII) and block unapproved transmissions. Endpoint Data Protection: - Use Case: Monitor and control sensitive data usage on endpoints. - Implementation: Use endpoint-based DLP agents to block copy-paste actions of sensitive data and unauthorized printing or file sharing. Cloud Data Security: - Use Case: Protect data stored in cloud platforms. - Implementation: Integrate DLP with cloud storage platforms like Google Drive, OneDrive, or AWS to monitor and restrict sensitive data sharing or downloads.

M1042Disable or Remove Feature or Program

Disable or remove unnecessary and potentially vulnerable software, features, or services to reduce the attack surface and prevent abuse by adversaries. This involves identifying software or features that are no longer needed or that could be exploited and ensuring they are either removed or properly disabled. This mitigation can be implemented through the following measures: Remove Legacy Software: - Use Case: Disable or remove older versions of software that no longer receive updates or security patches (e.g., legacy Java, Adobe Flash). - Implementation: A company removes Flash Player from all employee systems after it has reached its end-of-life date. Disable Unused Features: - Use Case: Turn off unnecessary operating system features like SMBv1, Telnet, or RDP if they are not required. - Implementation: Disable SMBv1 in a Windows environment to mitigate vulnerabilities like EternalBlue. Control Applications Installed by Users: - Use Case: Prevent users from installing unauthorized software via group policies or other management tools. - Implementation: Block user installations of unauthorized file-sharing applications (e.g., BitTorrent clients) in an enterprise environment. Remove Unnecessary Services: - Use Case: Identify and disable unnecessary default services running on endpoints, servers, or network devices. - Implementation: Disable unused administrative shares (e.g., C$, ADMIN$) on workstations. Restrict Add-ons and Plugins: - Use Case: Remove or disable browser plugins and add-ons that are not needed for business purposes. - Implementation: Disable Java and ActiveX plugins in web browsers to prevent drive-by attacks.

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S0409Machetemalware

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