DISGOMOJI: The Emoji-Driven Linux Malware
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.
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.volexity.com/blog/2024/06/13/disgomoji-malware-used-to-target-indian-government/
Related Blogs
Introduction
The Ministry of Electronics and Information Technology (MeitY) recently issued the “Email Policy of Government of India, 2024.” It is an updated email policy for central government employees, requiring the exclusive use of official government emails managed by the National Informatics Centre (NIC) for public duties. The policy replaces 2015 guidelines and prohibits government employees, contractors, and consultants from using their official email addresses on social media or other websites unless authorised for official functions. The policy aims to reinforce cybersecurity measures and protocols, maintain secure communications, and ensure compliance across departments. It is not legally binding, but its gazette notification ensures compliance and maintains cyber resilience in communications. The updated policy is also aligned with the newly enacted Digital Personal Data Protection Act, 2023.
Brief Highlights of Email Policy of Government of India, 2024
- The Email Policy of the Government of India, 2024 is divided into three parts namely, Part I: Introduction, Part II: Terms of Use, Part III: Functions, duties and Responsibilities, and with an annexe attached to it defining the meaning of certain organisation types in relation to this policy.
- The policy direct to not use NICeMail address for registering on any social media or other websites or mobile applications, save for the performance of official duties or with due authorisation from the authority competent.
- Under this new policy, “core use organisations” (central government departments and other government-controlled entities that do not provide goods or services on commercial terms) and its users shall use only NICeMail for official purposes.
- However, where the Core Use Organisation has an office or establishment outside India, to ensure availability of local communication channels under exigent circumstances may use alternative email services hosted outside India with all due approval.
- Core Use Organisations, including those dealing with national security, have their own independent email servers and can continue operating their independent email servers provided the servers are hosted in India. They should also consider migrating their email services to NICeMail Services for security and uniform policy enforcement.
- The policy also requires departments that currently use @gov.in or @nic.in to instead migrate to @departmentname.gov.in mail domains so that information sanctity and integrity can be maintained when officials are transferred from one department/ministry to another, and so that the ministry/department doesn’t lose access to the official communication. For this, the department or ministry in question must register the domain name with NIC. For instance, MeitY has registered the mail domain @meity.gov.in. The policy gives government departments six months time period complete this migration.
- The policy also makes distinction between (1) Organisation-linked email addresses and (2) Service-linked email addresses. The policy in respect of “organisation-linked email addresses” is laid down in paragraphs 5.3.2(a) and 5.4 to 5.6.3. And the policy in respect of “service-linked email addresses” is laid down in paragraphs 5.3.2(b) and 5.7 to 5.7.2 under the official document of said policy.
- Further, the new policy includes specific directives on separating the email addresses of regular government employees from those of contractors or consultants to improve operational clarity.
CyberPeace Policy Outlook
The revised Email Policy of the Government of India reflects the government’s proactive response to countering the evolving cybersecurity challenges and aims to maintain cyber resilience across the government department’s email communications. The policy represents a significant step towards securing inter government and intra-government communications. We as a cybersecurity expert organisation emphasise the importance of protecting sensitive data against cyber threats, particularly in a world increasingly targeted by sophisticated phishing and malware attacks, and we advocate for safe and secure online communication and information exchange. Email communications hold sensitive information and therefore require robust policies and mechanisms in place to safeguard the communications and ensure that sensitive data is shielded through regulated and secure email usage with technical capabilities for safe use. The proactive step taken by MeitY is commendable and aligned with securing governmental communication channels.
References:
- https://www.meity.gov.in/writereaddata/files/Email-policy-30-10-2024.pdf-(Official document for Email Policy of Government of India, 2024.
- https://www.hindustantimes.com/india-news/dont-use-govt-email-ids-for-social-media-central-govt-policy-for-employees-101730312997936.html#:~:text=Government%20employees%20must%20not%20use,email%20policy%20issued%20on%20Wednesday
- https://bwpeople.in/article/new-email-policy-issued-for-central-govt-employees-to-strengthen-cybersecurity-measures-537805
- https://www.thehindu.com/news/national/centre-notifies-email-policy-for-ministries-central-departments/article68815537.ece
Executive Summary:
The picture of a boy making sand art of Indian Cricketer Virat Kohli spreading in social media, claims to be false. The picture which was portrayed, revealed not to be a real sand art. The analyses using AI technology like 'Hive' and ‘Content at scale AI detection’ confirms that the images are entirely generated by artificial intelligence. The netizens are sharing these pictures in social media without knowing that it is computer generated by deep fake techniques.
Claims:
The collage of beautiful pictures displays a young boy creating sand art of Indian Cricketer Virat Kohli.
Fact Check:
When we checked on the posts, we found some anomalies in each photo. Those anomalies are common in AI-generated images.
The anomalies such as the abnormal shape of the child’s feet, blended logo with sand color in the second image, and the wrong spelling ‘spoot’ instead of ‘sport’n were seen in the picture. The cricket bat is straight which in the case of sand made portrait it’s odd. In the left hand of the child, there’s a tattoo imprinted while in other photos the child's left hand has no tattoo. Additionally, the face of the boy in the second image does not match the face in other images. These made us more suspicious of the images being a synthetic media.
We then checked on an AI-generated image detection tool named, ‘Hive’. Hive was found to be 99.99% AI-generated. We then checked from another detection tool named, “Content at scale”
Hence, we conclude that the viral collage of images is AI-generated but not sand art of any child. The Claim made is false and misleading.
Conclusion:
In conclusion, the claim that the pictures showing a sand art image of Indian cricket star Virat Kohli made by a child is false. Using an AI technology detection tool and analyzing the photos, it appears that they were probably created by an AI image-generated tool rather than by a real sand artist. Therefore, the images do not accurately represent the alleged claim and creator.
Claim: A young boy has created sand art of Indian Cricketer Virat Kohli
Claimed on: X, Facebook, Instagram
Fact Check: Fake & Misleading
Introduction
In an age where the lines between truth and fiction blur with an alarming regularity, we stand at the precipice of a new and dangerous era. Amidst the wealth of information that characterizes the digital age, deep fakes and disinformation rise like ghosts, haunting our shared reality. These manifestations of a technological revolution that promised enlightenment instead threaten the foundations upon which our societies are built: trust, truth, and collective understanding.
These digital doppelgängers, enabled by advanced artificial intelligence, and their deceitful companion—disinformation—are not mere ghosts in the machine. They are active agents of chaos, capable of undermining the core of democratic values, human rights, and even the safety of individuals who dare to question the status quo.
The Perils of False Narratives in the Digital Age
As a society, we often throw around terms such as 'fake news' with a mixture of disdain and a weary acceptance of their omnipresence. However, we must not understate their gravity. Misinformation and disinformation represent the vanguard of the digital duplicitous tide, a phenomenon growing more complex and dire each day. Misinformation, often spread without malicious intent but with no less damage, can be likened to a digital 'slip of the tongue' — an error in dissemination or interpretation. Disinformation, its darker counterpart, is born of deliberate intent to deceive, a calculated move in the chess game of information warfare.
Their arsenal is varied and ever-evolving: from misleading memes and misattributed quotations to wholesale fabrications in the form of bogus news sites and carefully crafted narratives. Among these weapons of deceit, deepfakes stand out for their audacity and the striking challenge they pose to the concept of seeing to believe. Through the unwelcome alchemy of algorithms, these video and audio forgeries place public figures, celebrities, and even everyday individuals into scenarios they never experienced, uttering words they never said.
The Human Cost: Threats to Rights and Liberties
The impact of this disinformation campaign transcends inconvenience or mere confusion; it strikes at the heart of human rights and civil liberties. It particularly festers at the crossroads of major democratic exercises, such as elections, where the right to a truthful, unmanipulated narrative is not just a political nicety but a fundamental human right, enshrined in Article 25 of the International Convention on Civil and Political Rights (ICCPR).
In moments of political change, whether during elections or pivotal referenda, the deliberate seeding of false narratives is a direct assault on the electorate's ability to make informed decisions. This subversion of truth infects the electoral process, rendering hollow the promise of democratic choice.
This era of computational propaganda has especially chilling implications for those at the frontline of accountability—journalists and human rights defenders. They find themselves targets of character assassinations and smear campaigns that not only put their safety at risk but also threaten to silence the crucial voices of dissent.
It should not be overlooked that the term 'fake news' has, paradoxically, been weaponized by governments and political entities against their detractors. In a perverse twist, this label becomes a tool to shut down legitimate debate and shield human rights violations from scrutiny, allowing for censorship and the suppression of opposition under the guise of combatting disinformation.
Deepening the societal schisms, a significant portion of this digital deceit traffic in hate speech. Its contents are laden with xenophobia, racism, and calls to violence, all given a megaphone through the anonymity and reach the internet so readily provides, feeding a cycle of intolerance and violence vastly disproportionate to that seen in traditional media.
Legislative and Technological Countermeasures: The Ongoing Struggle
The fight against this pervasive threat, as illustrated by recent actions and statements by the Indian government, is multifaceted. Notably, Union Minister Rajeev Chandrasekhar's commitment to safeguarding the Indian populace from the dangers of AI-generated misinformation signals an important step in the legislative and policy framework necessary to combat deepfakes.
Likewise, Prime Minister Narendra Modi's personal experience with a deepfake video accentuates the urgency with which policymakers, technologists, and citizens alike must view this evolving threat. The disconcerting experience of actor Rashmika Mandanna serves as a sobering reminder of the individual harm these false narratives can inflict and reinforces the necessity of a robust response.
In their pursuit to negate these virtual apparitions, policymakers have explored various avenues ranging from legislative action to penalizing offenders and advancing digital watermarks. However, it is not merely in the realm of technology that solutions must be sought. Rather, the confrontation with deepfakes and disinformation is also a battle for the collective soul of societies across the globe.
As technological advancements continue to reshape the battleground, figures like Kris Gopalakrishnan and Manish Gangwar posit that only a mix of rigorous regulatory frameworks and savvy technological innovation can hold the front line against this rising tidal wave of digital distrust.
This narrative is not a dystopian vision of a distant future - it is the stark reality of our present. And as we navigate this new terrain, our best defenses are not just technological safeguards, but also the nurturing of an informed and critical citizenry. It is essential to foster media literacy, to temper the human inclination to accept narratives at face value and to embolden the values that encourage transparency and the robust exchange of ideas.
As we peer into the shadowy recesses of our increasingly digital existence, may we hold fast to our dedication to the truth, and in doing so, preserve the essence of our democratic societies. For at stake is not just a technological arms race, but the very quality of our democratic discourse and the universal human rights that give it credibility and strength.
Conclusion
In this age of digital deceit, it is crucial to remember that the battle against deep fakes and disinformation is not just a technological one. It is also a battle for our collective consciousness, a battle to preserve the sanctity of truth in an era of falsehoods. As we navigate the labyrinthine corridors of the digital world, let us arm ourselves with the weapons of awareness, critical thinking, and a steadfast commitment to truth. In the end, it is not just about winning the battle against deep fakes and disinformation, but about preserving the very essence of our democratic societies and the human rights that underpin them.
