Cyber criminals possibly linked with the Democratic People's Republic of Korea (DPRK) have been found using GitHub as a C2 infrastructure in multi-stage campaigns attacking organizations in South Korea.
The operation chain involves hidden Windows shortcut (LNK) files that work as a beginning point to deploy a fake PDF document and a PowerShell script that triggers another attack. Experts believe that these LNK files are circulated through phishing emails.
Once the payloads are downloaded, the victim is shown as the PDF document, while the harmful PowerShell script operates covertly in the background.
The PowerShell script does checks to avoid analysis by looking for running processes associated with machines, forensic tools, and debuggers.
If successful, it retrieves a Visual Basic Script (VBScript) and builds persistence through a scheduled task that activates the PowerShell payload every 30 minutes in a covert window to escape security.
This allows the PowerShell script to deploy automatically after every system reboot. “Unlike previous attack chains that progressed from LNK-dropped BAT scripts to shellcode, this case confirms the use of newly developed dropper and downloader malware to deliver shellcode and the ROKRAT payload,” S2W reported.
The PowerShell script then classifies the attacked host, saves the response to a log file, and extracts it to a GitHub repository made under the account “motoralis” via a hard-coded access token. Few of the GitHub accounts made as part of the campaign consist of “Pigresy80,” "pandora0009”, “brandonleeodd93-blip” and “God0808RAMA.”
After this, the script parses a particular file in the same GitHub repository to get more instructions or modules, therefore letting the threat actor to exploit the trust built with a platform such as GitHub to gain trust and build persistence over the compromised host.
According to Fortnet, LNK files were used in previous campaign iterations to propagate malware families such as Xeno RAT. Notably, last year, ENKI and Trellix demonstrated the usage of GitHub C2 to distribute Xeno RAT and its version MoonPeak.
Kimsuky, a North Korean state-sponsored organization, was blamed for these assaults. Instead of depending on complex custom malware, the threat actor uses native Windows tools for deployment, evasion, and persistence. By minimizing the use of dropped PE files and leveraging LolBins, the attacker can target a broad audience with a low detection rate,” said researcher Cara Lin.
A massive credential-harvesting campaign was found abusing the React2Shell flaw as an initial infection vector to steal database credentials, shell command history, Amazon Web Services (AWS) secrets, GitHub, Stripe API keys.
Cisco Talos has linked the campaign to a threat cluster tracked as UAT-10608. At least 766 hosts around multiple geographic regions and cloud providers have been exploited as part of the operation.
According to experts, “Post-compromise, UAT-10608 leverages automated scripts for extracting and exfiltrating credentials from a variety of applications, which are then posted to its command-and-control (C2). The C2 hosts a web-based graphical user interface (GUI) titled 'NEXUS Listener' that can be used to view stolen information and gain analytical insights using precompiled statistics on credentials harvested and hosts compromised.”
The campaign targets Next.js instances that are vulnerable to CVE-2025-55182 (CVSS score: 10.0), a severe flaw in React Server Components and Next.js App Router that could enable remote code execution for access, and then deploy the NEXUS Listener collection framework.
This is achieved by a dropper that continues to play a multi-phase harvesting script that stores various details from the victim system.
SSH private keys and authorized_keys
JSON-parsed keys and authorized_keys
Kubernetes service account tokens
Environment variables
API keys
Docker container configurations
Running processes
IAM role-associated temporary credentials
The victims and the indiscriminate targeting pattern are consistent with automated scanning. The key thing in the framework is an application (password-protected) that makes all stolen data public to the user through a geographical user interface that has search functions to browse through the information. The present Nexus Listener version is V3, meaning the tool has gone through significant changes.
Talos managed to get data from an unknown NEXUS Listener incident. It had API keys linked with Stripe, AI platforms such as Anthropic, OpenAI, and NVIDIA NIM, communication services such as Brevo and SendGrid, webhook secrets, Telegram bot tokens, GitLab, and GitHub tokens, app secrets, and database connection strings.
Government institutions were the most heavily targeted sector in 2025, according to newly published research from HPE Threat Labs, which documented 1,186 active cyberattack campaigns throughout the year. The dataset reflects activity tracked between January 1 and December 31, 2025, and spans a wide range of industries and attack techniques, offering a broad view of how threat actors are operating at scale.
Out of all industries analyzed, government bodies accounted for the largest share, with 274 recorded campaigns. The financial services sector followed with 211, while technology companies experienced 179 campaigns. Defense-related organizations were targeted in 98 cases, and manufacturing entities saw 75. Telecommunications and healthcare sectors each registered 63 campaigns, while education and transportation sectors reported 61 incidents each. The distribution shows a clear trend: attackers are prioritizing sectors responsible for sensitive information, essential services, and large operational systems.
Researchers also observed a growing reliance on automation and artificial intelligence to accelerate cyber operations. Some threat groups have adopted highly organized workflows resembling production lines, enabling faster execution of attacks. These operations are often coordinated through platforms such as Telegram, where attackers can manage tasks and extract compromised data in real time.
In addition to automation, generative artificial intelligence is being actively used to enhance social engineering techniques. Cybercriminals are now creating synthetic voice recordings and deepfake videos to carry out vishing attacks and impersonate senior executives with greater credibility. In one identified case, an extortion group conducted detailed research into vulnerabilities in virtual private networks, allowing them to refine and improve their methods of gaining unauthorized access.
When examining the types of threats, ransomware emerged as the most prevalent, making up 22 percent of all campaigns. Infostealer malware followed at 19 percent, with phishing attacks accounting for 17 percent. Remote Access Trojans represented 11 percent, while other forms of malware comprised 9 percent of the total activity.
The scale of malicious infrastructure uncovered during the analysis further underscores the intensity of the threat environment. Investigators identified 147,087 harmful domains and 65,464 malicious URLs. In addition, 57,956 malicious files and 47,760 IP addresses were linked to cybercriminal operations. Over the course of the year, attackers exploited 549 distinct software vulnerabilities.
Insights from a global deception network revealed 44.5 million connection attempts originating from 372,800 unique IP addresses. Among these, 36,600 requests matched known attack signatures and were traced to 8,200 distinct source IPs targeting five specific destination systems.
A closer examination of attack patterns shows that cybercriminals frequently focus on exposed systems and known weaknesses. Remote code execution vulnerabilities in digital video recorders were triggered approximately 4,700 times. Exploitation attempts targeting Huawei routers were observed 3,490 times, while misuse of Docker application programming interfaces occurred in about 3,400 cases.
Other commonly exploited weaknesses included command injection vulnerabilities in PHPUnit and TP-Link systems, each recorded around 3,100 times. Printer-related enumeration attacks using Internet Printing Protocol, along with Realtek UPnP exploitation, were each observed roughly 2,700 times.
The vulnerabilities most frequently targeted during these campaigns included CVE-2017-17215, CVE-2023-1389, CVE-2014-8361, CVE-2017-9841, and CVE-2023-26801, all of which have been widely documented and continue to be exploited in systems that remain unpatched.
Beyond the raw data, the findings reflect a dynamic development in cybercrime. Attackers are combining automation, artificial intelligence, and well-known vulnerabilities to increase both the speed and scale of their operations. This shift reduces the time required to identify targets, exploit weaknesses, and generate impact, making modern cyberattacks more efficient and harder to contain.
The report points to the crucial need for organizations to strengthen their defenses by continuously monitoring systems, addressing known vulnerabilities, and adapting to rapidly evolving threat techniques. As attackers continue to refine their methods, proactive security measures are becoming essential to limit exposure and reduce risk across all sectors.