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Executive Summary:

New Linux malware has been discovered by a cybersecurity firm Volexity, and this new strain of malware is being referred to as DISGOMOJI. A Pakistan-based threat actor alias ‘UTA0137’ has been identified as having espionage aims, with its primary focus on Indian government entities.  Like other common forms of backdoors and botnets involved in different types of cyberattacks, DISGOMOJI, the malware  allows the use of commands to capture screenshots, search for files to steal, spread additional payloads, and transfer files. DISGOMOJI  uses Discord (messaging service)  for Command & Control (C2)  and uses emojis  for C2 communication. This malware targets Linux operating systems.

The DISCOMOJI Malware:  

• The DISGOMOJI malware opens a specific channel in a Discord server and every new channel corresponds to a new victim. This means that the attacker can communicate with the victim one at a time.

• This particular malware connects with the attacker-controlled Discord server using Emoji, a form of relay protocol. The attacker provides unique emojis as instructions, and the malware uses emojis as a feedback to the subsequent command status.

• For instance, the ‘camera with flash’ emoji is used to screenshots the device of the victim or to steal, the ‘fox’ emoji cracks all Firefox profiles, and the ‘skull’ emoji kills the malware process.

• This C2 communication is done using emojis to ensure messaging between infected contacts, and it is almost impossible for Discord to shut down the malware as it can always change the account details of Discord it is using once the maliciou server is blocked.

• The malware also has capabilities aside from the emoji-based C2 such as network probing, tunneling, and data theft that are needed to help the UTA0137 threat actor in achieving its espionage goals.

Specific emojis used for different commands by UTA0137:

• Camera with Flash (📸): Captures a picture of the target device’s screen as per the victim’s directions.

• Backhand Index Pointing Down (👇): Extracts files from the targeted device and sends them to the command channel in the form of attachments.

• Backhand Index Pointing Right (👉): This process involves sending a file found on the victim’s device to another web-hosted file storage service known as Oshi or oshi[. ]at.

• Backhand Index Pointing Left (👈): Sends a file from the victim’s device to transfer[. ]sh, which is an online service for sharing files on the Internet.

• Fire (🔥): Finds and transmits all files with certain extensions that exist on the victim’s device, such as *. txt, *. doc, *. xls, *. pdf, *. ppt, *. rtf, *. log, *. cfg, *. dat, *. db, *. mdb, *. odb, *. sql, *. json, *. xml, *. php, *. asp, *. pl, *. sh, *. py, *. ino, *. cpp, *. java,

• Fox (🦊): This works by compressing all Firefox related profiles in the affected device. 

• Skull (💀): Kills the malware process in windows using ‘os. Exit()’

• Man Running (🏃‍♂️):  Execute a command on a victim’s device. This command receives an argument, which is the command to execute.

• Index Pointing up (👆) : Upload a file to the victim's device. The file to upload is attached along with this emoji

Analysis:   

The analysis was carried out for one of the indicator of compromised SHA-256 hash file-  C981aa1f05adf030bacffc0e279cf9dc93cef877f7bce33ee27e9296363cf002.

It is found that most of the vendors have marked the file as trojan in virustotal and the graph explains the malicious nature of the contacted domains and IPs.

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Discord & C2 Communication  for UTA0137:

• Stealthiness: Discord is a well-known messaging platform used for different purposes, which means that sending any messages or files on the server should not attract suspicion. Such stealthiness makes it possible for UTA0137 to remain dormant for greater periods before launching an attack.

• Customization: UTA0137 connected to Discord is able to create specific channels for distinct victims on the server. Such a framework allows the attackers to communicate with each of the victims individually to make a process more accurate and efficient.

• Emoji-based protocol: For C2 communication, emojis really complicates the attempt that Discord might make to interfere with the operations of the malware. In case the malicious server gets banned, malware could easily be recovered, especially by using the Discord credentials from the C2 server.

• Persistence: The malware, as stated above, has the ability to perpetually exist to hack the system and withstand rebooting of systems so that the virus can continue to operate without being detected by the owner of the hacked system.

• Advanced capabilities: Other features of DISGOMOJI are the Network Map using Nmap scanner, network tunneling through Chisel and Ligolo and Data Exfiltration by File Sharing services. These capabilities thus help in aiding the espionage goals of UTA0137.

• Social engineering: The virus and the trojan can show the pop-up windows and prompt messages, for example the fake update for firefox and similar applications, where the user can be tricked into inputting the password.

• Dynamic credential fetching: The malware does not write the hardcoded values of the credentials in order to connect it to the discord server. This also inconveniences analysts as they are unable to easily locate the position of the C2 server.

• Bogus informational and error messages: They never show any real information or errors because they do not want one to decipher the malicious behavior easily.

Recommendations to mitigate the risk of UTA0137:

• Regularly Update Software and Firmware: It is essential to regularly update all the application software and firmware of different devices, particularly, routers, to prevent hackers from exploiting the discovered and disclosed flaws. This includes fixing bugs such as CVE-2024-3080 and CVE-2024-3912 on ASUS routers, which basically entails solving a set of problems.

• Implement Multi-Factor Authentication: There are statistics that show how often user accounts are attacked, it is important to incorporate multi-factor authentication to further secure the accounts.

• Deploy Advanced Malware Protection: Provide robust guard that will help the user recognize and prevent the execution of the DISGOMOJI malware and similar threats.

• Enhance Network Segmentation: Utilize stringent network isolation mechanisms that seek to compartmentalize the key systems and data from the rest of the network in order to minimize the attack exposure.

• Monitor Network Activity: Scanning Network hour to hour for identifying and handling the security breach and the tools such as Nmap, Chisel, Ligolo etc can be used.

• Utilize Threat Intelligence: To leverage advanced threats intelligence which will help you acquire knowledge on previous threats and vulnerabilities and take informed actions.

• Secure Communication Channels: Mitigate the problem of the leakage of developers’ credentials and ways of engaging with the discord through loss of contact to prevent abusing attacks or gaining control over Discord as an attack vector.

• Enforce Access Control: Regularly review and update the user authentication processes by adopting stricter access control measures that will allow only the right personnel to access the right systems and information.

• Conduct Regular Security Audits: It is important to engage in security audits periodically in an effort to check some of the weaknesses present within the network or systems.

• Implement Incident Response Plan: Conduct a risk assessment, based on that design and establish an efficient incident response kit that helps in the early identification, isolation, and management of security breaches.

• Educate Users: Educate users on cybersecurity hygiene, opportunities to strengthen affinity with the University, and conduct retraining on threats like phishing and social engineering.

Conclusion:

The new threat actor named UTA0137 from Pakistan who was utilizing DISGOMOJI malware to attack Indian government institutions using embedded emojis with a command line through the Discord app was discovered by Volexity. It has the capability to exfiltrate and aims to steal the data of government entities. The UTA0137 was continuously improved over time to permanently communicate with victims. It underlines the necessity of having strong protection from viruses and hacker attacks, using secure passwords and unique codes every time, updating the software more often and having high-level anti-malware tools. Organizations can minimize advanced threats, the likes of DISGOMOJI and protect sensitive data by improving network segmentation, continuous monitoring of activities, and users’ awareness.

References:

https://otx.alienvault.com/pulse/66712446e23b1d14e4f293eb

https://thehackernews.com/2024/06/pakistani-hackers-use-disgomoji-malware.html?m=1

https://cybernews.com/news/hackers-using-emojis-to-command-malware/

https://www.blackhatethicalhacking.com/news/disgomoji-new-linux-malware-uses-emojis-for-command-execution/

https://www.volexity.com/blog/2024/06/13/disgomoji-malware-used-to-target-indian-government/

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Introduction

As we delve deeper into the intricate, almost esoteric digital landscape of the 21st century, we are confronted by a new and troubling phenomenon that threatens the very bastions of our personal security. This is not a mere subplot in some dystopian novel but a harsh and palatable reality firmly rooted in today's technologically driven society. We must grapple with the consequences of the alarming evolution of cyber threats, particularly the sophisticated use of artificial intelligence in creating face swaps—a technique now cleverly harnessed by nefarious actors to undermine the bedrock of biometric security systems.

What is GoldPickaxe?

It was amidst the hum of countless servers and data centers that the term 'GoldPickaxe' began to echo, sending shivers down the spines of cybersecurity experts. Originating from the intricate web spun by a group of Chinese hackers as reported in Dark Reading. GoldPickaxe represents the latest in a long lineage of digital predators. It is an astute embodiment of the disguise, blending into the digital environment as a seemingly harmless government service app. But behind its innocuous facade, it bears the intent to ensnare and deceive, with the elderly demographic being especially susceptible to its trap.  

Victims, unassuming and trustful, are cajoled into revealing their most sensitive information: phone numbers, private details, and, most alarmingly, their facial data. These virtual reflections, intended to be the safeguard of one's digital persona, are snatched away and misused in a perilous transformation. The attackers harness such biometric data, feeding it into the arcane furnaces of deepfake technology, wherein AI face-swapping crafts eerily accurate and deceptive facsimiles. These digital doppelgängers become the master keys, effortlessly bypassing the sentinel eyes of facial recognition systems that lock the vaults of Southeast Asia's financial institutions.

Through the diligent and unyielding work of the research team at Group-IB, the trajectory of one victim's harrowing ordeal—a Vietnamese individual pilfered of a life-altering $40,000—sheds light on the severity of this technological betrayal. The advancements in deep face technology, once seen as a marvel of AI, now present a clear and present danger, outpacing the mechanisms meant to deter unauthorized access, and leaving the unenlightened multitude unaware and exposed.

Adding weight to the discussion, experts, a potentate in biometric technology, commented with a somber tone: 'This is why we see face swaps as a tool of choice for hackers. It gives the threat actor this incredible level of power and control.' This chilling testament to the potency of digital fraudulence further emphasizes that even seemingly impregnable ecosystems, such as that of Apple’s, are not beyond the reach of these relentless invaders.

New Threat

Emerging from this landscape is the doppelgänger of GoldPickaxe specifically tailored for the iOS landscape—GoldDigger's mutation into GoldPickaxe for Apple's hallowed platform is nothing short of a wake-up call. It engenders not just a single threat but an evolving suite of menaces, including its uncanny offspring, 'GoldDiggerPlus,' which is wielding the terrifying power to piggyback on real-time communications of the affected devices. Continuously refined and updated, these threats become chimeras, each iteration more elusive, more formidable than its predecessor.

One ingenious and insidious tactic exploited by these cyber adversaries is the diversionary use of Apple's TestFlight, a trusted beta testing platform, as a trojan horse for their malware. Upon clampdown by Apple, the hackers, exhibiting an unsettling level of adaptability, inveigle users to endorse MDM profiles, hitherto reserved for corporate device management, thereby chaining these unknowing participants to their will.

How To Protect

Against this stark backdrop, the question of how one might armor oneself against such predation looms large. It is a question with no simple answer, demanding vigilance and proactive measures. 

General Vigilance : Aware of the Trojan's advance, Apple is striving to devise countermeasures, yet individuals can take concrete steps to safeguard their digital lives.

Consider Lockdown Mode:  It is imperative to exhibit discernment with TestFlight installations, to warily examine MDM profiles, and seriously consider embracing the protective embrace of Lockdown Mode. Activating Lockdown Mode on an iPhone is akin to drawing the portcullis and manning the battlements of one's digital stronghold. The process is straightforward: a journey to the settings menu, a descent into privacy and security, and finally, the sanctification of Lockdown Mode, followed by a device restart. It is a curtailment of convenience, yes, but a potent defense against the malevolence lurking in the unseen digital thicket.

As 'GoldPickaxe' insidiously carves its path into the iOS realm—a rare and unsettling occurrence—it flags the possible twilight of the iPhone's vaunted reputation for tight security. Should these shadow operators set their sights beyond Southeast Asia, angling their digital scalpels towards the U.S., Canada, and other English-speaking enclaves, the consequences could be dire.

Conclusion

Thus, it is imperative that as digital citizens, we fortify ourselves with best practices in cybersecurity. Our journey through cyberspace must be cautious, our digital trails deliberate and sparse. Let the specter of iPhone malware serve as a compelling reason to arm ourselves with knowledge and prudence, the twin guardians that will let us navigate the murky waters of the internet with assurance, outwitting those who weave webs of deceit. In heeding these words, we preserve not only our financial assets but the sanctity of our digital identities against the underhanded schemes of those who would see them usurped.

References 

• https://www.timesnownews.com/technology-science/new-ios-malware-stealing-face-id-data-bank-infos-on-iphones-how-to-protect-yourself-article-107761568
• https://www.darkreading.com/application-security/ios-malware-steals-faces-defeat-biometrics-ai-swaps
• https://www.tomsguide.com/computing/malware-adware/first-ever-ios-trojan-discovered-and-its-stealing-face-id-data-to-break-into-bank-accounts

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Introduction

Bumble’s launch of its ‘Opening Move’ feature has sparked a new narrative on safety and privacy within the digital dating sphere and has garnered mixed reactions from users. It was launched against the backdrop of women stating that the ‘message first’ policy of Bumble was proving to be tedious. Addressing the large-scale review, Bumble launched its ‘Opening Move’ feature, whereby users can either craft or select from pre-set questions which potential matches may choose to answer to start the conversation at first glance. These questions are a segue into meaningful and insightful conversation from the get-go and overstep the traditional effort to start engaging chats between matched users. This feature is an optional feature that users may enable and as such does not prevent a user from exercising the autonomy previously in place.

Innovative Approach to Conversation Starters

Many users consider this feature as innovative; not only does it act as a catalyst for fluid conversation but also cultivates insightful dialogue, fostering meaningful interactions that are devoid of the constraint of superficial small talk. The ‘Opening Moves’ feature may also be aligned with unique scientific research indicating that individuals form their initial attractions within 3-seconds of intimate interaction, thereby proving to be a catalyst to the decision-making process of an individual in the attraction time frame. 

Organizational Benefits and Data Insights

From an organisational standpoint, the feature is a unique solution towards localisation challenges faced by apps; the option of writing a personalised ‘Opening Move’ implies setting prompts that are culturally relevant and appropriate in a specific area. Moreover, it is anticipated that Bumble may enhance and improve user experience within the platform through data analysis. Data from responses to an ‘Opening Move’ may provide valuable insights into user preferences and patterns by analysing which pre-set prompts garner more responses over others and how often is a user-written ‘Opening Move’ successful in obtaining a response in comparison with Bumble’s pre-set prompts. A quick glance at Bumble’s privacy policy[1] shows that data storing and transferring of chats between users are not shared with third parties, further safeguarding personal privacy. However,  Bumble does use the chat data for its own internal purposes after removing personally identifiable information from chats. The manner of such review and removal of data has not been specified, which may raise challenges depending upon whether the reviewer is a human or an algorithm.

However, some users perceive the feature as counterproductive to the company’s principle of ‘women make the first move’. While Bumble aims to market the feature as a neutral ground for matched users based on the exercise of choice, users see it as a step back into the heteronormative gender expectations that most dating apps conform to, putting the onus of the ‘first move’ on men. Many male users have complained that the feature acts as a catalyst for men to opt out of the dating app and would most likely refrain from interacting with profiles enabled with the ‘Opening Move’ feature, since the pressure to answer in a creative manner is disproportionate with the likelihood their response actually being entertained.[2] Coupled with the female users terming the original protocol as ‘too much effort’, the preset questions of the ‘Opening Move’ feature may actively invite users to categorise potential matches according to arbitrary questions that undermine real-life experiences, perspectives and backgrounds of each individual.[3]

Additionally, complications are likely to arise when a notorious user sets a question that indirectly gleans personal or sensitive, identifiable information. The individual responding may be bullied or be subjected to hateful slurs when they respond to such carefully crafted conversation prompts.

Safety and Privacy Concerns

On the corollary, the appearance of choice may translate into more challenges for women on the platform. The feature may spark an increase in the number of unsolicited, undesirable messages and images from a potential match. The most vulnerable groups at present remain individuals who identify as females and other sexual minorities.[4] At present, there appears to be no mechanism in place to proactively monitor the content of responses, relying instead on user reporting. This approach may prove to be impractical given the potential volume of objectionable messages, necessitating a more efficient solution to address this issue. It is to be noted that in spite of a user reporting, the current redressal systems of online platforms remain lax, largely inadequate and demonstrate ineffectiveness in addressing user concerns or grievances. This lack of proactiveness is violative of the right to redressal provided under the Digital Personal Data Protection Act, 2023. It is thought that the feature may actually take away user autonomy that Bumble originally aimed to grant since Individuals who identify as introverted, shy, soft-spoken, or non-assertive may refrain from reporting harassing messages altogether, potentially due to discomfort or reluctance to engage in confrontation. Resultantly, it is anticipated that there would be a sharp uptake in cases pertaining to cyberbullying, harassment and hate speech (especially vulgar communications) towards both the user and the potential match. 

From an Indian legal perspective, dating apps have to adhere to the Information Technology Act, 2000 [5], the Information Technology (Intermediary and Digital Media Ethics) Rules 2021 [6] and the Digital Personal Data Protection Act, 2023, that regulates a person’s digital privacy and set standards on the kind of content an intermediary may host. An obligation is cast upon an intermediary to uprise its users on what content is not allowed on its platform in addition to mandating intimation of the user’s digital rights. The lack of automated checks, as mentioned above, is likely to make Bumble non-compliant with the ethical guidelines. 

The optional nature of the ‘Opening Move’ grants users some autonomy. However, some technical updates may enhance the user experience of this feature. Technologies like AI are an effective aid in behavioural and predictive analysis. An upgraded ‘matching’ algorithm can analyse the number of un-matches a profile receives, thereby identifying and flagging a profile having multiple lapsed matches. Additionally, the design interface of the application bearing a filter option to filter out flagged profiles would enable a user to be cautious while navigating through the matches. Another possible method of weeding out notorious profiles is by deploying a peer-review system of profiles whereby a user has a singular check-box that enables them to flag a profile. Such a checkbox would ideally be devoid of any option for writing personal comments and would bear a check box stating whether the profile is most or least likely to bully/harass. This would ensure that a binary, precise response is recorded and any coloured remarks are avoided. [7]

Governance and Monitoring Mechanisms

From a governance point of view, a monitoring mechanism on the manner of crafting questions is critical. Systems should be designed to detect certain words/sentences and a specific manner of framing sentences to disallow questions contrary to the national legal framework. An onscreen notification having instructions on generally acceptable manner of conversations as a reminder to users to maintain cyber hygiene while conversing is also proposed as a mandated requirement for platforms. The notification/notice may also include guidelines on what information is safe to share in order to safeguard user privacy. Lastly, a revised privacy policy should establish the legal basis for processing responses to ‘Opening Moves’, thereby bringing it in compliance with national legislations such as the Digital Personal Data Protection Act, 2023.

Conclusion

Bumble's 'Opening Move' feature marks the company’s ‘statement’ step to address user concerns regarding initiating conversations on the platform. While it has been praised for fostering more meaningful interactions, it also raises not only ethical concerns but also concerns over user safety. While the 'Opening Move' feature can potentially enhance user experience, its success is largely dependent on Bumble's ability to effectively navigate the complex issues associated with this feature. A more robust monitoring mechanism that utilises newer technology is critical to address user concerns and to ensure compliance with national laws on data privacy.

Endnotes:

• [1] Bumble’s privacy policy https://bumble.com/en-us/privacy  
• [2] Discussion thread, r/bumble, Reddit https://www.reddit.com/r/Bumble/comments/1cgrs0d/women_on_bumble_no_longer_have_to_make_the_first/?share_id=idm6DK7e0lgkD7ZQ2TiTq&utm_content=2&utm_medium=ios_app&utm_name=ioscss&utm_source=share&utm_term=1&rdt=65068 
• [3] Mcrea-Hedley, Olivia, “Love on the Apps: When did Dating Become so Political?”, 8 February 2024 https://www.service95.com/the-politics-of-dating-apps/ 
• [4] Gewirtz-Meydan, A., Volman-Pampanel, D., Opuda, E., & Tarshish, N. (2024). ‘Dating Apps: A New Emerging Platform for Sexual Harassment? A Scoping Review. Trauma, Violence, & Abuse, 25(1), 752-763. https://doi.org/10.1177/15248380231162969 
• [5]  Information Technology Act, 2000 https://www.indiacode.nic.in/bitstream/123456789/13116/1/it_act_2000_updated.pdf 
• [6]  Information Technology (Intermediary Guidelines and Digital Media Ethics) Rules 2021 https://www.meity.gov.in/writereaddata/files/Information%20Technology%20%28Intermediary%20Guidelines%20and%20Digital%20Media%20Ethics%20Code%29%20Rules%2C%202021%20%28updated%2006.04.2023%29-.pdf 
• [7]  Date Confidently: Engaging Features in a Dating App (Use Cases), Consaguous, 10 July 2023 https://www.consagous.co/blog/date-confidently-engaging-features-in-a-dating-app-use-cases  

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