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Executive Summary:

BrazenBamboo’s DEEPDATA malware represents a new wave of advanced cyber espionage tools, exploiting a zero-day vulnerability in Fortinet FortiClient to extract VPN credentials and sensitive data through fileless malware techniques and secure C2 communications. With its modular design, DEEPDATA targets browsers, messaging apps, and password stores, while leveraging reflective DLL injection and encrypted DNS to evade detection. Cross-platform compatibility with tools like DEEPPOST and LightSpy highlights a coordinated development effort, enhancing its espionage capabilities. To mitigate such threats, organizations must enforce network segmentation, deploy advanced monitoring tools, patch vulnerabilities promptly, and implement robust endpoint protection. Vendors are urged to adopt security-by-design practices and incentivize vulnerability reporting, as vigilance and proactive planning are critical to combating this sophisticated threat landscape.

Introduction

The increased use of zero-day vulnerabilities by more complex threat actors reinforces the importance of more developed countermeasures. One of the threat actors identified is BrazenBamboo uses a zero-day vulnerability in Fortinet FortiClient for Windows through the DEEPDATA advanced malware framework. This research explores technical details about DEEPDATA, the tricks used in its operations, and its other effects.

Technical Findings

1. Vulnerability Exploitation Mechanism

The vulnerability in Fortinet’s FortiClient lies in its failure to securely handle sensitive information in memory. DEEPDATA capitalises on this flaw via a specialised plugin, which:

• Accesses the VPN client’s process memory.
• Extracts unencrypted VPN credentials from memory, bypassing typical security protections.
• Transfers credentials to a remote C2 server via encrypted communication channels.

2. Modular Architecture

DEEPDATA exhibits a highly modular design, with its core components comprising:

• Loader Module (data.dll): Decrypts and executes other payloads.
• Orchestrator Module (frame.dll): Manages the execution of multiple plugins.
• FortiClient Plugin: Specifically designed to target Fortinet’s VPN client.

Each plugin operates independently, allowing flexibility in attack strategies depending on the target system.

3. Command-and-Control (C2) Communication

DEEPDATA establishes secure channels to its C2 infrastructure using WebSocket and HTTPS protocols, enabling stealthy exfiltration of harvested data. Technical analysis of network traffic revealed:

• Dynamic IP switching for C2 servers to evade detection.
• Use of Domain Fronting, hiding C2 communication within legitimate HTTPS traffic.
• Time-based communication intervals to minimise anomalies in network behavior.

4. Advanced Credential Harvesting Techniques

Beyond VPN credentials, DEEPDATA is capable of:

• Dumping password stores from popular browsers, such as Chrome, Firefox, and Edge.
• Extracting application-level credentials from messaging apps like WhatsApp, Telegram, and Skype.
• Intercepting credentials stored in local databases used by apps like KeePass and Microsoft Outlook.

5. Persistence Mechanisms

To maintain long-term access, DEEPDATA employs sophisticated persistence techniques:

• Registry-based persistence: Modifies Windows registry keys to reload itself upon system reboot.
• DLL Hijacking: Substitutes legitimate DLLs with malicious ones to execute during normal application operations.
• Scheduled Tasks and Services: Configures scheduled tasks to periodically execute the malware, ensuring continuous operation even if detected and partially removed.

Additional Tools in BrazenBamboo’s Arsenal

1. DEEPPOST

A complementary tool used for data exfiltration, DEEPPOST facilitates the transfer of sensitive files, including system logs, captured credentials, and recorded user activities, to remote endpoints.

2. LightSpy Variants

• The Windows variant includes a lightweight installer that downloads orchestrators and plugins, expanding espionage capabilities across platforms.
• Shellcode-based execution ensures that LightSpy’s payload operates entirely in memory, minimising artifacts on the disk.

3. Cross-Platform Overlaps

BrazenBamboo’s shared codebase across DEEPDATA, DEEPPOST, and LightSpy points to a centralised development effort, possibly linked to a Digital Quartermaster framework. This shared ecosystem enhances their ability to operate efficiently across macOS, iOS, and Windows systems.

Notable Attack Techniques

1. Memory Injection and Data Extraction

Using Reflective DLL Injection, DEEPDATA injects itself into legitimate processes, avoiding detection by traditional antivirus solutions.

• Memory Scraping: Captures credentials and sensitive information in real-time.
• Volatile Data Extraction: Extracts transient data that only exists in memory during specific application states.

2. Fileless Malware Techniques

DEEPDATA leverages fileless infection methods, where its payload operates exclusively in memory, leaving minimal traces on the system. This complicates post-incident forensic investigations.

3. Network Layer Evasion

By utilising encrypted DNS queries and certificate pinning, DEEPDATA ensures that network-level defenses like intrusion detection systems (IDS) and firewalls are ineffective in blocking its communications.

Recommendations

1. For Organisations

• Apply Network Segmentation: Isolate VPN servers from critical assets.
• Enhance Monitoring Tools: Deploy behavioral analysis tools that detect anomalous processes and memory scraping activities.
• Regularly Update and Patch Software: Although Fortinet has yet to patch this vulnerability, organisations must remain vigilant and apply fixes as soon as they are released.

2. For Security Teams

• Harden Endpoint Protections: Implement tools like Memory Integrity Protection to prevent unauthorised memory access.
• Use Network Sandboxing: Monitor and analyse outgoing network traffic for unusual behaviors.
• Threat Hunting: Proactively search for indicators of compromise (IOCs) such as unauthorised DLLs (data.dll, frame.dll) or C2 communications over non-standard intervals.

3. For Vendors

• Implement Security by Design: Adopt advanced memory protection mechanisms to prevent credential leakage.
• Bug Bounty Programs: Encourage researchers to report vulnerabilities, accelerating patch development.

Conclusion

DEEPDATA is a form of cyber espionage and represents the next generation of tools that are more advanced and tunned for stealth, modularity and persistence. While Brazen Bamboo is in the process of fine-tuning its strategies, the organisations and vendors have to be more careful and be ready to respond to these tricks. The continuous updating, the ability to detect the threats and a proper plan on how to deal with incidents are crucial in combating the attacks.

References:

1. https://thehackernews.com/2024/11/warning-deepdata-malware-exploiting.html‍
2. http://www.theregister.com/2024/11/19/china_brazenbamboo_fortinet_0day/

Recognizing As the Ministry of Electronic and Information Technology (MeitY) continues to invite proposals from academicians, institutions, and industry experts to develop frameworks and tools for AI-related issues through the IndiaAI Mission, it has also funded two AI projects that will deal with matters related to deepfakes as per a status report submitted on 21st November 2024. The Delhi court also ordered the nomination of the members of a nine-member Committee constituted by the MeitY on 20th November 2024 (to address deepfake issues) and asked for a report within three months.‍

Funded AI projects :

The two projects funded by MeitY are:

1. Fake Speech Detection Using Deep Learning Framework- The project was initiated in December 2021 and focuses on detecting fake speech by creating a web interface for detection software this also includes investing in creating a speech verification software platform that is specifically designed for testing fake speech detection systems. It is set to end in December 2024. 
2. Design and Development of Software for Detecting Deepfake Videos and Images- This project was funded by MeitY from January 2022 to March 2024. It also involved the Centre for Development of Advanced Computing (C-DAC), Kolkata and Hyderabad as they have developed a prototype tool capable of detecting deepfakes. Named FakeCheck, it is designed as a desktop application and a web portal aiming to detect deepfakes without the use of the internet. Reports suggest that it is currently undergoing the testing phase and awaiting feedback.

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Apart from these projects, MeitY has released their expression of interest for proposals in four other areas which include: 

• Tools that detect AI-generated content along with traceable markers,
• Tools that develop an ethical AI framework for AI systems to be transparent and respect human values,
• An AI risk management and assessment tool that analyses threats and precarious situations of AI-specific risks in public AI use cases and;
• Tools that can assess the resilience of AI in stressful situations such as cyberattacks, national disasters, operational failures, etc. 

CyberPeace Outlook

Deepfakes pose significant challenges to critical sectors in India, such as healthcare and education, where manipulated content can lead to crimes like digital impersonation, misinformation, and fraud. The rapid advancement of AI, with developments (regarding regulation) that can’t keep pace, continues to fuel such threats. Recognising these risks, MeitY’s IndiaAI mission, promoting investments and encouraging educational institutions to undertake AI projects that strengthen the country's digital infrastructure comes in as a guiding light. A part of the mission focuses on developing indigenous solutions, including tools for assessment and regulation, to address AI-related threats effectively. While India is making strides in this direction, the global AI landscape is evolving rapidly, with many nations advancing regulations to mitigate AI-driven challenges. Consistent steps, including inviting proposals and funding projects provide the much-needed impetus for the mission to be realized.

References

1. https://economictimes.indiatimes.com/tech/technology/meity-dot-at-work-on-projects-for-fair-ai-development/articleshow/115777713.cms?from=mdr
2. https://www.hindustantimes.com/india-news/meity-seeks-tools-to-detect-deepfakes-label-ai-generated-content-101734410291642.html
3. https://www.msn.com/en-in/news/India/meity-funds-two-ai-projects-to-detect-fake-media-forms-committee-on-deepfakes/ar-AA1vMAlJ
4. https://indiaai.gov.in/

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On March 02, 2023, the Biden-Harris Administration unveiled the National Cybersecurity Plan to ensure that all Americans can enjoy the advantages of a secure digital environment. In this pivotal decade, the United States will reimagine cyberspace as a tool to achieve our goals in a way that is consistent with our values. These values include a commitment to economic security and prosperity, respect for human rights and fundamental freedoms, faith in our democracy and its institutions, and a commitment to creating a fair and diverse society. This goal cannot be achieved without a dramatic reorganisation of the United States’ cyberspace responsibilities, roles, and resources.

VISION- AIM

A more planned, organised, and well-resourced strategy to cyber protection is necessary for today’s rapidly developing world. State and non-state actors alike are launching creative new initiatives to challenge the United States. New avenues for innovation are opening up as next-generation technologies attain maturity and digital interdependencies are expanding. Thus, this Plan lays forth a plan to counter these dangers and protect the digital future. Putting it into effect can safeguard spending on things like infrastructure, clean energy, and the re-shoring of American industry.

The USA will create its digital environment by:

• Defensible if the cyber defence is comparatively easier, more effective, cheaper
• Resilient, where the impacts of cyberattacks and operator mistakes are lasting and little widespread.
• Values-aligned, where our most cherished values shape—and are in turn reinforced by— our digital world.

Already, the National Security Strategy, Executive Order 14028 (Improving the Nation’s Cybersecurity), National Security Memorandum 5 (Improving Cybersecurity for Critical Infrastructure Control Systems), M-22-09 (Moving the U.S. Government Toward Zero-Trust Cybersecurity Principles), and National Security Memorandum 10 (Improving Cybersecurity for Federal Information Systems) have all been issued to help secure cyberspace and our digital ecosystem (Promoting United States Leadership in Quantum Computing While Mitigating Risks to Vulnerable Cryptographic Systems). The Strategy builds upon previous efforts by acknowledging that the Internet serves not as an end in itself but as a means to a goal—the achievement of our highest ideals.

There are five key points that constitute the National Cybersecurity Strategy:

1. Defend Critical Infrastructure –

Defend critical infrastructure by, among other things: i) enacting cybersecurity regulations to secure essential infrastructure; (ii) boosting public-private sector collaboration; (iii) integrating federal cybersecurity centres; (iv) updating federal incident response plans and processes; and (v) modernising federal systems in accordance with zero trust principles.

2. Disrupt and Dismantle Threat Actors

Disrupt and dismantle threat actors, including by i) integrating military, diplomatic, information, financial, intelligence, and law enforcement competence, (ii) strengthening public-private sector collaborations, (iii) increasing the speed and scale of intelligence sharing and victim information, (iv) preventing the abuse of U.S.-based infrastructure, and (v) increasing disruption campaigns and other endeavours against ransomware operators;

3. Shape Market Forces to Drive Security and Resilience

The federal government can help shape market forces that drive security and resilience by doing the following: i) supporting legislative efforts to limit organisations’ ability to collect, use, transfer, and maintain personal information and providing strong protections for sensitive data (such as geolocation and health data), (ii) boosting IoT device security via federal research, development, sourcing, risk management efforts, and IoT security labelling programs, and (iii) instituting legislation establishing standards for the security of IoT devices. (iv) strengthening cybersecurity contract standards with government suppliers, (v) studying a federal cyber insurance framework, and (vi) using federal grants and other incentives to invest in efforts to secure critical infrastructure.

4. Invest in a Resilient Future

Invest in a resilient future by doing things like i) securing the Internet’s underlying infrastructure, (ii) funding federal cybersecurity R&D in areas like artificial intelligence, cloud computing, telecommunications, and data analytics used in critical infrastructure, (iii) migrating vulnerable public networks and systems to quantum-resistant cryptography-based environments, and (iv) investing hardware and software systems that strengthen the resiliency, safety, and security of these areas, (v) enhancing and expanding the nation’s cyber workforce; and (vi) investing in verifiable, strong digital identity solutions that promote security, interoperability, and accessibility.

5. Forge International Partnerships to Pursue Shared Goals

The United States should work with other countries to advance common interests, such as i) forming international coalitions to counter threats to the digital ecosystem; (ii) increasing the scope of U.S. assistance to allies and partners in strengthening cybersecurity; (iii) forming international coalitions to reinforce global norms of responsible state behaviour; and (v) securing global supply chains for information, communications, and operational technologies.

Conclusion:

The Strategy results from months of work by the Office of the National Cyber Director (“ONCD”), the primary cybersecurity policy and strategy advisor to President Biden and coordinates cybersecurity engagement with business and international partners. The National Security Council will oversee the Strategy’s implementation through ONCD and the Office of Management and Budget.

In conclusion, we can say that the National Cybersecurity Plan of the Biden administration lays out an ambitious goal for American cybersecurity that is to be accomplished by the end of the decade. The administration aims to shift tasks and responsibilities to those organisations in the best position to safeguard systems and software and to encourage incentives for long-term investment in cybersecurity to build a more cyber-secure future.

It is impossible to assess the cyber strategy in a vacuum. It’s critical to consider the previous efforts and acknowledge the ones that still need to be made. The implementation specifics for several aspects of the approach are left up to a yet-to-be-written plan.

Given these difficulties, it would be simple to voice some pessimism at this stage regarding the next effort that will be required. Yet, the Biden administration has established a vision for cybersecurity oriented towards the future, with novel projects that could fundamentally alter how the United States handles and maintains cybersecurity. The Biden administration raised the bar for cybersecurity by outlining this robust plan, which will be challenging for succeeding administrations to let go. Also, it has alerted Congress to areas where it will need to act.

References:

• https://www.whitehouse.gov/briefing-room/statements-releases/2023/03/02/fact-sheet-biden-harris-administration-announces-national-cybersecurity-strategy/
• https://www.huntonprivacyblog.com/2023/03/02/white-house-releases-national-cybersecurity-strategy/
• https://www.lawfareblog.com/biden-harris-administration-releases-new-national-cybersecurity-strategy