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North Korea-Linked Group Launches Dolphin Backdoor: ESET Research

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ESET researchers analyzed a previously unreported sophisticated backdoor used by the ScarCruft APT group. The backdoor, which ESET named Dolphin, has a wide range of spying capabilities, including monitoring drives and portable devices, exfiltrating files of interest, keylogging, taking screenshots, and stealing credentials from browsers. Its functionality is reserved for selected targets, to which the backdoor is deployed after the initial compromise using less advanced malware. Dolphin abuses cloud storage services — specifically Google Drive — for Command and Control communication.

ScarCruft, also known as APT37 or Reaper, is an espionage group that has been operating since at least 2012. It primarily focuses on South Korea, but other Asian countries have also been targeted. ScarCruft seems to be interested mainly in government and military organizations, and companies in various industries linked to the interests of North Korea.

“After being deployed on selected targets, it searches the drives of compromised systems for interesting files and exfiltrates them to Google Drive. One unusual capability found in prior versions of the backdoor is the ability to modify the settings of victims’ Google and Gmail accounts to lower their security, presumably to maintain Gmail account access for the threat actors,” says ESET researcher Filip Jurčacko, who analyzed the Dolphin backdoor.

In 2021, ScarCruft conducted a watering-hole attack on a South Korean online newspaper focused on North Korea. The attack consisted of multiple components, including an Internet Explorer exploit and shellcode leading to a backdoor named BLUELIGHT.

“In the previous reports, the BLUELIGHT backdoor was described as the attack’s final payload. However, when analyzing the attack, we discovered through ESET telemetry a second, more sophisticated backdoor deployed on selected victims via this first backdoor. We named this backdoor Dolphin based on a PDB path found in the executable,” explains Jurčacko.

Since the initial discovery of Dolphin in April 2021, ESET researchers have observed multiple versions of the backdoor, in which the threat actors improved the backdoor’s capabilities and made attempts to evade detection.

While the BLUELIGHT backdoor performs basic reconnaissance and evaluation of the compromised machine after exploitation, Dolphin is more sophisticated and manually deployed only against selected victims. Both backdoors are capable of exfiltrating files from a path specified in a command, but Dolphin also actively searches drives and automatically exfiltrates files with interesting extensions.

The backdoor collects basic information about the targeted machine, including the operating system version, malware version, list of installed security products, username, and computer name. By default, Dolphin searches all fixed (HDD) and non-fixed drives (USBs), creates directory listings, and exfiltrates files by extension. Dolphin also searches portable devices, such as smartphones, via the Windows Portable Device API. The backdoor also steals credentials from browsers, and is capable of keylogging and taking screenshots. Finally, it stages this data in encrypted ZIP archives before uploading it to Google Drive.

Cyber Security

Kaspersky Reports Growth in Gamer Cyberattacks in 2023

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The global gaming community, which currently accounts for nearly half of the world’s population, has found itself increasingly under fire by cybercriminals, according to a comprehensive investigation by Kaspersky. In the period spanning from July 2022 to July 2023, the cybersecurity company discovered the growing vulnerability of the gaming user base. Cybercriminals exploited this vast community to access personal data, launching a range of attacks, including web vulnerabilities, Distributed Denial of Service (DDoS) attacks, cryptocurrency mining, and complex Trojan or phishing campaigns.

In the period from July 1, 2022, to July 1, 2023, Kaspersky’s solutions detected a substantial 4,076,530 attempts to download 30,684 unique files masked as popular games, mods, cheats, and other game-related software. These incidents affected 192,456 users worldwide. These files – primarily classified as unwanted software and often labelled as not-a-virus:Downloader (89.7%), – are not innately perilous, but they are capable of downloading various other programs, even malicious ones, onto the user’s device. Adware (5.3%) and Trojans (2.4%) were also noteworthy threats to desktop gamers.

Minecraft emerged as the favoured target among cybercriminals, responsible for triggering 70.3% of all alerts. The threats using Minecraft as bait impacted 130,619 players across the globe during the reporting period. Roblox was the second most targeted game title, contributing to 20.4% of all alerts affecting 30,367 users. Counter-Strike: Global Offensive (4.8%), PUBG (2.9%), Hogwarts Legacy (0.6%), DOTA 2 (0.5%), and League of Legends (0.3%) were also among the prominent games subjected to cyber threats.

The mobile gaming community, which, according to the Newzoo 2023 report consists of over three billion gamers or nearly 40% of the world’s population, is characterized by its significant growth and accessibility and has become an enticing target for cybercriminals. Between July 1, 2022, and July 1, 2023, Kaspersky documented 436,786 attempts to infect mobile devices, impacting 84,539 users.

Various game titles were employed as bait to target mobile gamers. Minecraft enthusiasts once again were the primary targets, as 90.4% of attacks focused on the 80,128 gamers who fell victim. Indonesian users in particular faced exploitation through Minecraft, resulting in a Trojan.AndroidOS.Pootel.a attack, discreetly registering mobile subscriptions. Iran witnessed the highest prevalence of these attacks, with 140,482 alerts impacting 54,467 Minecraft players.

PUBG: Battlegrounds Battle Royale, was the second most exploited mobile game among cybercriminals, accounting for 5.09% of all alerts, with the majority of incidents originating from Russian Federation users. Roblox (3.33%) ranked third in terms of detections but second in the number of affected users.

A noteworthy discovery involves the emergence of SpyNote, a spy Trojan distributed among Roblox users on the Android mobile platform under the guise of a mod. This Trojan exhibits various spying capabilities, including keylogging, screen recording, video streaming from phone cameras, and the ability to impersonate Google and Facebook applications to deceive users into divulging their passwords.

Phishing and counterfeit distribution pages continue to pose a significant threat to gamers. Malicious and undesired software often masquerades as popular games, disseminated through third-party websites offering pirated versions. These deceptive pages typically display inflated download counts, potentially misleading users into a false sense of security. Nonetheless, clicking the download button typically results in an archive that may contain harmful or unrelated elements, diverging from the promised content.

“In the dynamic gaming industry, which hosts a wealth of personal and financial data, cybercriminals are seizing enticing opportunities. They exploit gaming accounts by pilfering in-game assets, and virtual currency, and selling compromised gaming accounts, often with real-world value. The relentless pursuit of personal data has led to a surge in ransomware attacks, even affecting professional gamers who depend on uninterrupted play. This underscores the critical need for enhanced cybersecurity awareness within the gaming community,” comments Vasily Kolesnikov, a cybersecurity expert at Kaspersky.

To stay safe while gaming, here are some recommendations:

  • It is safer to download your games from official stores like Steam, Apple App Store, Google Play or Amazon Appstore only. Games from these markets are not 100 % secure, but at least they are checked by store representatives and there is some kind of screening process: not every app can be made available in these stores.
  • If you wish to buy a game that is not available through the main stores, purchase it from the official website only. Double-check the URL of the website and make sure it is authentic.
  • Beware of phishing campaigns and unfamiliar gamers. Do not open links received by email or in a game chat unless you trust the sender. Do not open files you get from strangers.
  • Do not download pirated software or any other illegal content, even if you are redirected to it from a legitimate website.
  • A strong, reliable security solution will be a great help to you, especially if it will not slow down your computer while you are playing, but at the same time, it will protect you from all possible cyber threats.
  • Use a robust security solution to protect yourself from malicious software and its activity on mobile devices.
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Cyber Security

The Average Time to Investigate a Cybersecurity Incident is Around 26.1 Days, says Binalyze

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With the intricacies of the digital world growing exponentially, the relevance of effective and timely Digital Forensics and Incident Response (DFIR) cannot be overstated. Recognising this need for insight, Binalyze, in collaboration with the global market intelligence firm IDC, is excited to publish a compelling new report: “The State of Digital Forensics and Incident Response 2023”.

Based on an extensive survey conducted in June 2023, the study brings into focus the perspectives of over 100 cybersecurity professionals from five Middle Eastern countries. This diverse respondent pool consists of individuals directly influencing the cybersecurity functions within their organizations, with roles spanning SOC analysts, DFIR professionals, Incident responders, Threat hunters, SOC managers, and Directors.

The key findings of the report are critical for anyone involved in DFIR, from SOC teams to individual analysts and investigators. Report highlights include:

  • According to the research and subsequent analysis, the average time to investigate an incident is approximately 26.1 days, and the time to resolve incidents is an additional 17.1 days.
  • The importance of reducing “detection-to-resolution” times for efficient incident management.
  • The ongoing skills shortage: 81% of respondents identified this as a major challenge.

“Our world thrives on digital connections, but with this connectivity comes vulnerabilities. As the frequency and intensity of cyber threats surge, the importance of DFIR in understanding, mitigating, and learning from these threats is paramount. There is a real and urgent need for forensic visibility at speed and scale. AIR is a game changer here and should be at the centre of all SOCs DFIR effort,” says Ahmet Öztoprak, Senior Sales Director of META at Binalyze.

This report serves as both a wake-up call and a guide. By leveraging the insights from the top cybersecurity professionals in the Middle East, ‘The State of Digital Forensics and Incident Response 2023’ aims to provide companies with the knowledge and solutions they need to combat emerging cyber threats effectively and maintain resiliency.

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Cyber Security

Cybercriminals Used Malware in 7 Out of 10 Attacks on Individuals in the Middle East

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Positive Technologies analyzed attacks on individuals in Middle Eastern countries between 2022 and 2023. Malware was used in 70% of successful attacks. More than half of these attacks involved spyware. The vast majority of attacks used social engineering techniques. In 20% of phishing campaigns, the attack was multi-pronged, exploiting multiple social engineering channels simultaneously.

“According to our data, cybercriminals employed malware in 7 out of 10 successful attacks on individuals in the Middle East region. More often than not, the attackers infected users’ devices with spyware (three out of five malware attacks). This type of malware collects information from the infected device and then passes it on to the attacker. Depending on the task, spyware can steal personal and financial data, user credentials, as well as files from the device’s memory,” the company said.

Positive Technologies Information Security Research Analyst Roman Reznikov said, “By using spyware, attackers can compromise not only personal and payment information and personal accounts, but also corporate credentials, network connection information, and other sensitive data. The stolen data is then offered for sale on the dark web forums. As a result, a skilled attacker can gain access to an organization and carry out a successful attack, leading to non-tolerable consequences: disruption of technological and business processes, theft of funds, leakage of confidential information, attacks on customers and partners.”

In the vast majority (96%) of successful attacks on individuals in Middle Eastern countries, social engineering techniques were employed. Most often, these were mass attacks in which the criminals aimed to reach the maximum number of victims. To achieve this, they actively leveraged current news about significant global and regional events, including the 2022 FIFA World Cup Qatar.

In every fifth (20%) phishing campaign, the attack was multi-pronged, exploiting multiple social engineering channels simultaneously. Criminals led the victims through a series of steps until the device was infected and data stolen. For instance, users could be lured through social media accounts that contained links to a messenger channel from which the victim would install a malicious application.

One of the reasons for the success of social engineering is the numerous data leaks from various organizations. “According to our research on the cybersecurity threatscape in the Middle East, 63% of successful attacks on individuals in the region resulted in leaks of confidential information. The majority of stolen information consisted of personal data (30%) and account credentials (30%). Cybercriminals were also interested in payment card data (10%) and user correspondence (8%).” the company added.

On the dark web, malicious actors sell information about users and also provide stolen data archives for free. Criminals use the compromised information in subsequent attacks on users. For example, a successful attack on a bank could result in fraudulent actions against its customers. Cybersecurity experts recommend that users follow cyber-hygiene rules.

Companies also need to ensure the security of employee and customer data. Data breaches cause reputational and financial damage and put at risk users whose information has been compromised. To maintain cyber-resilience, it’s essential to regularly assess the effectiveness of security measures and pay special attention to the verification of non-tolerable events.

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