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Zoom Platform Misused by Elusive Comet Attackers in Fraud Scheme

 


Recent reports suggest that North Korean threat actors are now employing an alarming evolution in the tactics they employ to launch a sophisticated cybercrime operation known as Elusive Comet, a sophisticated cybercrime operation. This newly uncovered campaign demonstrates a way of exploiting Zoom's remote control capabilities to gain unauthorised access to cryptocurrency industry users' systems. 

It is clear from this development that a significant trend is occurring in which widely trusted communication platforms are being exploited as tools to facilitate high-level cyber intrusions. Security Alliance, one of the most reputable cybersecurity research organisations, conducted the investigation and analysis that led to the discovery. Elusive Comet exhibited some significant operational similarities to activities previously associated with North Korea's notorious Lazarus Group, a group which has been linked to North Korea for some years. 

The findings suggest that definitive attribution is yet to be made. Due to the lack of conclusive evidence, attempts to link this campaign with any known state-sponsored entity have been complicated, further demonstrating how covert cyberattacks have become increasingly common in the financial sector. This campaign, according to security experts, marks a dramatic departure from the traditional methods of gaining access to cryptocurrency targets previously used to attack them. This is because the attackers can leverage legitimate features of mainstream platforms such as Zoom, which not only makes their operations more successful but also makes detection and prevention much more difficult. 

Using such ubiquitous communication tools emphasises the need for enhanced security protocols in industries that handle digital assets to stay on top of digital threats. With the emergence of Elusive Comet, the threat landscape continues to evolve, and adversaries are increasingly adopting innovative approaches to bypass traditional defences, a reminder that the threat landscape is constantly changing and that adversaries are continuously evolving. The threat actors behind Elusive Comet have invested considerable resources into establishing a convincing online persona to maintain an appearance of legitimacy. 

To reinforce their facade of authenticity, they operate credible websites and maintain active social media profiles. As one example of the fraudulent entities that are associated with the group, Aureon Capital, a fake venture capital company posing as a legitimate company, Aureon Press, and The OnChain Podcast have all been carefully designed to trick unsuspecting individuals and businesses. 

The attackers usually contact users by sending them direct messages via X (formerly Twitter), or by contacting them via email, or by offering invitations to appear on their fabricated podcast as a guest. In the study, researchers found that after initiating contact and establishing a certain level of trust, attackers then move swiftly to set up a Zoom meeting under the pretext of learning more about the target's professional activities. 

It is common for key meeting details to be withheld until very near the time of the scheduled meeting, a tactic employed by the organisation to create an impression of urgency and encourage compliance among participants. A common occurrence is that victims are often asked to share their screens during the call so that they can demonstrate their work, and in doing so, they unknowingly expose their sensitive systems and data to the attackers. As a result of the Elusive Comet operation, Jake Gallen, CEO of the cryptocurrency company Emblem Vault, lost over $100,000 of his digital assets, which included his company's cryptocurrency. As a result, he was targeted after agreeing to participate in a Zoom interview with someone who was posing as a media person. 

By manipulating Gallen during the session into granting remote access to his computer under the disguise of technical facilitation, the attacker succeeded in obtaining his permission to do so. The attackers were able to install a malicious payload, referred to by the attackers as "GOOPDATE," which allowed them to gain access to his cryptocurrency wallets and steal the funds that resulted from this attack. 

It is clear from this incident that cryptocurrencies are vulnerable, especially among executives and high-net-worth individuals who interact regularly with media outlets and investors, which makes them particularly susceptible to sophisticated social engineering schemes because of their high level of exposure to these media outlets. Additionally, the breach emphasises that professionals operating in high-value financial sectors should have heightened awareness of cybersecurity and adopt stricter digital hygiene policies. 

A leading cybersecurity research and advisory firm specialising in forensics and advanced persistent threats (APTS), Security Alliance, meticulously tracked and analysed the Elusive Comet campaign, a campaign that is highly likely to persist for many years to come. Security Alliance published a comprehensive report in March 2025 detailing the tactics, techniques, and procedures (TTPS) used by threat actors and presenting comprehensive insights into these tactics. In their research, the attackers were able to install malware on victims' systems based primarily on a combination of social engineering and using Zoom's remote control features to get their malicious code into the systems of their victims. 

Despite drawing parallels between the methods used to conduct this campaign and those of the notorious Lazarus Group of North Korea, Security Alliance exercised caution when attributions were made. It was noted in the research that the similarities in techniques and tools could indicate common origins or shared resources; however, the researchers stressed the difficulties associated with attribution in a cyber threat landscape where various actors tend to duplicate or repurpose the methodologies of each other. 

Taking into account the methods employed by the Elusive Comet campaign, cryptocurrency professionals are strongly advised to take a comprehensive and proactive security posture to reduce the risk of falling victim to the same types of sophisticated attacks again. First and foremost, companies and individuals should make sure that Zoom's remote control feature is disabled by default, and that it is only enabled when necessary by the organisation and the individual. This functionality can be significantly restricted by restricting the use of this feature, which reduces the chances of cybercriminals exploiting virtual engagements as well.

It is also important to exercise increased caution in responding to unsolicited meeting invitations. When invitations are sent by an unknown or unverified source, it is essential to verify the identity of the requester through independent channels. In order to increase account security in cryptocurrency-related platforms, including digital wallets and exchanges, it is imperative to implement multi-factor authentication (MFA) as a critical barrier. 

MFA serves as an additional layer of protection if credentials are compromised as well, providing an extra layer of defence. Further, it will be beneficial for organisations to deploy robust endpoint protection solutions as well as maintain all software, including communication platforms such as Zoom, consistently updated, to protect against the exploitation of known vulnerabilities. Additionally, regular cybersecurity education and training for employees, partners, and key stakeholders is also extremely important. 

An organisation can strengthen the security awareness of its teams through the development of a culture of security awareness, which will allow them to identify and resist threat actors' tactics, such as social engineering, phishing attacks, and other deceptive tactics. The Elusive Comet operation highlights a broader, more dangerous threat to the cryptocurrency industry as cybercriminals are increasingly manipulating trusted communication tools to launch highly targeted and covert attacks targeting the crypto market. 

There is a strong possibility that the attacker may have been part of the North Korean Lazarus Group, but an official attribution remains elusive, further illustrating the difficulty in identifying cyber threat actors, yet there are some clear lessons to be learned from this attack. 

As today's cybersecurity landscape becomes more volatile and more complex, it is more important than ever for organisations to maintain vigilance, implement rigorous security protocols, and continually adapt to emerging threats to survive. The adversaries are continually refining their tactics, so the only people who can successfully safeguard the assets and reputation of their organisations and businesses against evolving threats to their identity and reputation will be those who invest in resilient defence strategies.

Citrine Sleet APT Exploits Chrome Zero-Day Vulnerability for Rootkit Infiltration

 


It is believed that North Korean hackers have been able to use unpatched zero-day in Google Chrome (CVE-2024-7971) to install a rootkit called FudModule after gaining admin privileges by exploiting a kernel vulnerability in Microsoft Windows. An investigation by Microsoft has revealed that a North Korean threat actor exploited a zero-day vulnerability in the Chromium browser that has been tracked as CVE-2024-7971 to conduct a sophisticated cyber operation.  

According to the report, Citrine Sleet, the notorious group behind the attack that targets cryptography sectors in particular, is responsible for the attack. It has been reported that CVE-2024-7971 is a type of confusion vulnerability in the V8 JavaScript and WebAssembly engine that had been impacted in versions of Chrome before 128.0.6613.84. By exploiting this vulnerability, threat actors could gain remote code execution (RCE) access to the sandboxed Chromium renderer process and conduct a remote attack. 

There was a vulnerability that was fixed by Google on August 21, 2024, and users should ensure that they are running the most recent version of Chrome. It is clear from this development that the nation-state adversary is trying to increase its penetration of Windows zero-day exploits in recent months, indicating that they are persistent in their efforts to acquire and introduce oodles of zero-day exploits. 

A Microsoft security researcher found evidence that Citrine Sleet (formerly DEV-0139 and DEV-1222) was responsible for the activity. Citrine Sleet is also known as AppleJeus, Labyrinth Chollima, Nickel Academy, and UNC4736, all of which are associated with Citrine Sleet. There is an assessment that this sub-cluster is part of the Lazarus Group (a.k.a. Diamond Sleet and Hidden Cobra) which is related to Lazarus. 

Several analysts have previously credited the use of AppleJeus malware to a Lazarus subgroup called BlueNoroff (also known as APT38, Nickel Gladstone, and Stardust Chollima), indicating the fact that the threat actors share both toolsets and infrastructure from one subgroup to another. Some cybersecurity vendors maintain track of this North Korean threat group under different names, such as AppleJeus, Labyrinth Chollima, and UNC4736, among others. 

Hidden Cobra is a term used by the U.S. government to describe malicious actors sponsored by the North Korean government collectively as being influenced by the state. It is mostly targeted at financial institutions, with a special focus on cryptocurrency organizations and individuals who are closely associated with the cryptocurrency industry. 

In the past, it has been linked to Bureau 121 of the Reconnaissance General Bureau of North Korea, where it practices intelligence gathering. Moreover, North Korean hackers are also known for using malicious websites that appear to be legitimate cryptocurrency trading platforms to infect prospective victims with fake job applications, weaponized cryptocurrency wallets, and cryptocurrency trading apps designed to steal sensitive information. 

This is the first time UNC4736 malware has been identified in a supply chain attack, for example in March 2023 it attacked the Electron-based desktop client of video conferencing software provider 3CX. Further, they were able to breach the website of Trading Technologies, an automation company for stock market trading, to sneakily push trojanized versions of the X_TRADER software into the system. In a March 2022 report, Google's Threat Analysis Group (TAG) also linked AppleJeus to the compromise of Trading Technologies' website, highlighting AppleJeus as being behind the attack. 

For years, the U.S. government has repeatedly issued warnings about state-sponsored cyberattacks targeting cryptocurrency-related businesses and individuals with AppleJeus malware that is backed by the North Korean government. As a result of the security vulnerability CVE-2024-7971 that was discovered last week, Google patched Chrome's version 8 JavaScript engine and reported it as a type confusion vulnerability. 

In a recent cybersecurity incident report, it was revealed that victims were directed to a domain controlled by the threat group Citrine Sleet, identified as voyagorclub[.]space. The exact method by which victims were lured to this domain remains undetermined, though it is suspected that social engineering tactics were employed. This is consistent with Citrine Sleet’s established modus operandi, which frequently involves manipulating individuals through social engineering to initiate attacks. 

Upon successful redirection to the malicious domain, attackers leveraged a zero-day remote code execution (RCE) vulnerability, identified as CVE-2024-7971. This vulnerability is linked to a type of confusion flaw in Chrome’s V8 JavaScript engine. Google addressed this security issue in a recent patch, highlighting that it allowed attackers to achieve RCE within the sandboxed Chromium renderer process of the victim's browser. Once inside this sandboxed environment, the attackers further escalated their access by exploiting a secondary vulnerability in the Windows kernel. 

The additional vulnerability, CVE-2024-38106, was exploited to escape the browser’s sandbox environment. This kernel vulnerability, which Microsoft had patched in their latest Patch Tuesday release, allowed attackers to gain SYSTEM-level privileges on the compromised system. Following this, the attackers downloaded and activated a highly sophisticated rootkit known as FudModule. This malware, when loaded into memory, enabled direct kernel object manipulation (DKOM), providing attackers with the capability to bypass critical kernel security measures.

The FudModule rootkit is particularly concerning, as it is designed to manipulate kernel-level processes, enabling attackers to establish persistent backdoor access to the compromised system. Through DKOM, the rootkit effectively tampers with core system functions, allowing attackers to evade detection, steal sensitive information, and potentially deploy additional malicious software. Interestingly, the FudModule rootkit has been linked to another North Korean state-sponsored group known as Diamond Sleet, which has utilized this malware since its discovery in October 2022. 

This suggests a potential collaboration between Citrine Sleet and Diamond Sleet or, at the very least, shared access to malicious tools and infrastructure. Furthermore, the rootkit bears similarities to tools used by another notorious hacking group, the Lazarus Group, indicating that FudModule may be part of a broader North Korean cyber-espionage toolkit. Citrine Sleet's attack demonstrates a highly coordinated and multi-faceted approach, beginning with social engineering techniques to lure victims to a compromised domain and culminating in the exploitation of critical vulnerabilities to gain deep control over target systems. 

By leveraging both CVE-2024-7971 and CVE-2024-38106, the attackers were able to bypass multiple layers of security, from browser sandboxing to Windows kernel defences. Microsoft has issued a series of recommendations to help organizations mitigate the risk of such attacks. They stress the importance of maintaining up-to-date software and operating systems, as timely patching is critical to closing vulnerabilities before they can be exploited. 

Additionally, Microsoft advocates for the deployment of security solutions that provide unified visibility across the entire cyberattack chain. Such tools can detect and block attacker tools and post-compromise malicious activity. Lastly, strengthening the configuration of the operating environment is recommended to minimize the likelihood of successful exploitation and post-compromise activity. This incident underscores the evolving nature of cyber threats and highlights the importance of proactive cybersecurity measures to detect, block, and mitigate advanced persistent threats (APTs).

AWS Employs MadPot Decoy System to Thwart APTs and Botnets

 

Amazon Web Services (AWS), a prominent player in cloud computing, has unveiled its internal defense system, MadPot, which has proven effective in luring and trapping malicious activities, including those orchestrated by nation-state-backed Advanced Persistent Threats (APTs) such as Volt Typhoon and Sandworm.

Conceived by AWS software engineer Nima Sharifi Mehr, MadPot is described as an advanced network of monitoring sensors equipped with automated response capabilities. This system ensnares malicious actors, monitors their actions, and generates protective data for various AWS security products.

MadPot is ingeniously designed to mimic numerous plausible targets, thwarting Distributed Denial of Service (DDoS) botnets, and preemptively blocking formidable threat actors like Sandworm from compromising AWS customers.

According to AWS, the sensors are vigilant over a staggering 100 million potential threat interactions and probes daily worldwide. Out of these, about 500,000 are identified as malicious activities, and this colossal trove of threat intelligence is meticulously analyzed to provide actionable insights on potentially harmful online activities. 

The response capabilities automatically shield the AWS network from identified threats, and they also reach out to other companies whose infrastructure is being exploited for malicious purposes.

In the case of Sandworm, the honeypot effectively intercepted the actor's attempt to exploit a security vulnerability in WatchGuard network security appliances. AWS not only identified IP addresses but also other distinct attributes linked to the Sandworm threat involved in the attempted breach of an AWS customer.

MadPot's remarkable capability to simulate a range of services and engage in extensive interactions enabled AWS to gather additional insights about Sandworm campaigns. This included specific services targeted by the actor and post-exploitation commands initiated by them. Armed with this intelligence, AWS promptly informed the affected customer, who took swift action to rectify the vulnerability.

Furthermore, AWS highlighted that the data and insights gathered by MadPot are harnessed to enhance the efficacy of their security tools, including AWS WAF, AWS Shield, AWS Network Firewall, and Amazon Route 53 Resolver DNS Firewall. These are complemented by detective and reactive services like Amazon GuardDuty, AWS Security Hub, and Amazon Inspector.

Is Your Business At Risk From APT Threats?

 

In 2022, organizations are re-analyzing their cybersecurity measures to mitigate risks and protect against potential cyber-attacks. After budgeting, risk assessment, compliance, and more, agencies have different priorities for their safety needs. As an organization, your business should consider two things, nation-state and Advanced Persistent Threat (APT) style attacks, along with growing ransomware threats, zero-day vulnerabilities, and phishing attacks. 

How APTs select targets? 

Your company might not have suffered a cyberattack in the past year, but there are chances that your partner or vendor in the supply chain has. APTs are normally used to send attacks with national-level impacts, for instance, intellectual property theft, espionage for national intelligence, or infrastructure compromise. In the end, the threat actor's end goal affects organizations and persons of prominence. In recent times, state-sponsored attacks focused on getting intelligence. These attacks might be industry-focused, but most of them target critical infrastructure. The majority of these attacks are directed by government organizations, hackers compromise or deliver security vulnerabilities to extract out critical intelligence. 

Should your business be concerned? 
Hacking campaigns that required months of planning and computing skills to bypass security walls and penetrate networks with ease could once only be done by state-sponsored hackers. In the present scenario, these methods are available to anyone, the resources are sold on the dark web as hired services or pre-packaged malware. The style of these APT attacks has not changed, today, anyone has access to the tools required to launch such powerful attacks. 

Due to remote work culture, every organization is moving its important data over the cloud, this opens up opportunities for threat actors to target these organizations. According to HelpNet Security, "the most important way to protect against APTs is to be proactive. Assume compromise, understand what compromise may look like for your organization, and go look for it. Simultaneously, try to not over-rely on technology. This approach has backfired on a variety of occasions over the last few years."