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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

Cybersecurity threats have been globally prevalent for quite some time now. All nations, organisations and individuals stand at risk from new and emerging potential cybersecurity threats, putting finances, privacy, data, identities and sometimes human lives at stake. The latest Data Breach Report by IBM revealed that nearly a staggering 83% of organisations experienced more than one data breach instance during 2022. As per the 2022 Data Breach Investigations Report by Verizon, the total number of global ransomware attacks surged by 13%, indicating a concerning rise equal to the last five years combined. The statistics clearly showcase how the future is filled with potential threats as we advance further into the digital age.  

Who is Okta?  

Okta is a secure identity cloud that links all your apps, logins and devices into a unified digital fabric. Okta has been in existence since 2009 and is based out of San Francisco, USA and has been one of the leading service providers in the States. The advent of the company led to early success based on the high-quality services and products introduced by them in the market. Although Okta is not as well-known as the big techs, it plays a vital role in big organisations' cybersecurity systems. More than 18,000 users of the identity management company's products rely on it to give them a single login for the several platforms that a particular business uses. For instance, Zoom leverages Okta to provide "seamless" access to its Google Workspace, ServiceNow, VMware, and Workday systems with only one login, thus showing how Okta is fundamental in providing services to ease the human effort on various platforms. In the digital age, such organisations are instrumental in leading the pathway to innovation and entrepreneurship. 

The Okta Breach

The last Friday, 20 October, Okta reported a hack of its support system, leading to chaos and havoc within the organisation. The result of the hack can be seen in the market in the form of the massive losses incurred by Okta in the stock exchange. 

Since the attack, the company's market value has dropped by more than $2 billion. The well-known incident is the most recent in a long line of events connected to Okta or its products, which also includes a wave of casino invasions that caused days-long disruptions to hotel rooms in Las Vegas, casino giants Caesars and MGM were both affected by hacks as reported earlier this year. Both of those attacks, targeting MGM and Caesars’ Okta installations, used a sophisticated social engineering attack that went through IT help desks.

What can be done to prevent this? 

Cybersecurity attacks on organisations have become a very common occurrence ever since the pandemic and are rampant all across the globe. Major big techs have been successful in setting up SoPs, safeguards and precautionary measures to protect their companies and their digital assets and interests. However, the Medium, Mico and small business owners are the most vulnerable to such unknown high-intensity attacks. The governments of various nations have established Computer Emergency Response Teams to monitor and investigate such massive-scale cyberattacks both on organisations and individuals. The issue of cybersecurity can be better addressed by inculcating the following aspects into our daily digital routines: 

• Team Upskilling: Organisations need to be critical in creating upskilling avenues for employees pertaining to cybersecurity and threats. These campaigns should be run periodically, focusing on both the individual and organisational impact of any threat.  
• Reporting Mechanism for Employees and Customers: Business owners and organisations need to deploy robust, sustainable and efficient reporting mechanisms for both employees well as customers. The mechanism will be fundamental in pinpointing the potential grey areas and threats in the cyber security mechanism as well. A dedicated reporting mechanism is now a mandate by a lot of governments around the world as it showcases transparency and natural justice in terms of legal remedies.  
• Preventive, Precautionary and Recovery Policies: Organisations need to create and deploy respective preventive, precautionary and recovery policies in regard to different forms of cyber attacks and threats. This will be helpful in a better understanding of threats and faster response in cases of emergencies and attacks. These policies should be updated regularly, keeping in mind the emerging technologies. Efficient deployment of the policies can be done by conducting mock drills and threat assessment activities.  
• Global Dialogue Forums: It is pertinent for organisations and the industry to create a community of cyber security enthusiasts from different and diverse backgrounds to address the growing issues of cyberspace; this can be done by conducting and creating global dialogue forums, which will act as the beacon of sharing best practices, advisories, threat assessment reports, potential threats and attacks thus establishing better inter-agency and inter-organisation communication and coordination.  
• Data Anonymisation and Encryption: Organisations should have data management/processing policies in place for transparency and should always store data in an encrypted and anonymous manner, thus creating a blanket of safety in case of any data breach.
• Critical infrastructure: The industry leaders should push the limits of innovation by setting up state-of-the-art critical cyber infrastructure to create employment, innovation, and entrepreneurship spirit among the youth, thus creating a whole new generation of cyber-ready professionals and dedicated netizens. Critical infrastructures are essential in creating a safe, secure, resilient and secured digital ecosystem. 
• Cysec Audits & Sandboxing: All organisations should establish periodic routines of Cybersecurity audits, both by internal and external entities, to find any issue/grey area in the security systems. This will create a more robust and adaptive cybersecurity mechanism for the organisation and its employees. All tech developing and testing companies need to conduct proper sandboxing exercises for all or any new tech/software creation to identify its shortcomings and flaws. 

‍Conclusion 

In view of the rising cybersecurity attacks on organisations, especially small and medium companies, a lot has been done, and a lot more needs to be done to establish an aspect of safety and security for companies, employees and customers. The impact of the Okta breach very clearly show how cyber attacks can cause massive repercussion for any organisation in the form of monetary loss, loss of business, damage to reputation and a lot of other factors. One should take such instances as examples and learnings for ourselves and prepare our organisation to combat similar types of threats, ultimately working towards preventing these types of threats and eradicating the influence of bad actors from our digital ecosystem altogether. 

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References: 

• https://hbr.org/2023/05/the-devastating-business-impacts-of-a-cyber-breach#:~:text=In%202022%2C%20the%20global%20average,legal%20fees%2C%20and%20audit%20fees.
• https://www.okta.com/intro-to-okta/#:~:text=Okta%20is%20a%20secure%20identity,use%20to%20work%2C%20instantly%20available.
• https://www.cyberpeace.org/resources/blogs/mgm-resorts-shuts-down-it-systems-after-cyberattack

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Introduction

Twitter Inc.’s appeal against barring orders for specific accounts issued by the Ministry of Electronics and Information Technology was denied by a single judge on the Karnataka High Court. Twitter Inc. was also given an Rs. 50 lakh fine by Justice Krishna Dixit, who claimed the social media corporation had approached the court defying government directives.

As a foreign corporation, Twitter’s locus standi had been called into doubt by the government, which said they were ineligible to apply Articles 19 and 21 to their situation. Additionally, the government claimed that because Twitter was only designed to serve as an intermediary, there was no “jural relationship” between Twitter and its users.

The Issue

In accordance with Section 69A of the Information Technology Act, the Ministry issued the directives. Nevertheless, Twitter had argued in its appeal that the orders “fall foul of Section 69A both substantially and procedurally.” Twitter argued that in accordance with 69A, account holders were to be notified before having their tweets and accounts deleted. However, the Ministry failed to provide these account holders with any notices.

On June 4, 2022, and again on June 6, 2022, the government sent letters to Twitter’s compliance officer requesting that they come before them and provide an explanation for why the Blocking Orders were not followed and why no action should be taken against them.

Twitter replied on June 9 that the content against which it had not followed the blocking orders does not seem to be a violation of Section 69A. On June 27, 2022, the Government issued another notice stating Twitter was violating its directions. On June 29, Twitter replied, asking the Government to reconsider the direction on the basis of the doctrine of proportionality. On June 30, 2022, the Government withdrew blocking orders on ten account-level URLs but gave an additional list of 27 URLs to be blocked. On July 10, more accounts were blocked. Compiling the orders “under protest,” Twitter approached the HC with the petition challenging the orders.

Legality

Additionally, the government claimed that because Twitter was only designed to serve as an intermediary, there was no “jural relationship” between Twitter and its users.

Government attorney Additional Solicitor General R Sankaranarayanan argued that tweets mentioning “Indian Occupied Kashmir” and the survival of LTTE commander Velupillai Prabhakaran were serious enough to undermine the integrity of the nation.

Twitter, on the other hand, claimed that its users have pushed for these rights. Additionally, Twitter maintained that under Article 14 of the Constitution, even as a foreign company, they were entitled to certain rights, such as the right to equality. They also argued that the reason for the account blocking in each case was not stated and that Section 69a’s provision for blocking a URL should only apply to the offending URL rather than the entire account because blocking the entire account would prevent the creation of information while blocking the offending tweet only applied to already-created information.

Conclusion

The evolution of cyberspace has been substantiated by big tech companies like Facebook, Google, Twitter, Amazon and many more. These companies have been instrumental in leading the spectrum of emerging technologies and creating a blanket of ease and accessibility for users. Compliance with laws and policies is of utmost priority for the government, and the new bills and policies are empowering the Indian cyberspace. Non Compliance will be taken very seriously, and the same is legalised under the Intermediary Guidelines 2021 and 2022 by Meity. Referring to Section 79 of the Information Technology Act, which pertains to an exemption from liability of intermediary in some instances, it was said, “Intermediary is bound to obey the orders which the designate authority/agency which the government fixes from time to time.”