A sophisticated ClickFix campaign has been uncovered, compromising legitimate websites to deliver a multi-stage malware chain. The attack culminates in MIMICRAT, a custom remote access trojan with advanced capabilities. The campaign uses compromised sites across industries and geographies for delivery, employing a five-stage PowerShell chain that bypasses security measures before deploying a Lua-scripted shellcode loader. MIMICRAT, the final payload, is a native C++ RAT featuring malleable C2 profiles, Windows token theft, and SOCKS5 proxy functionality. The attack chain involves multiple compromised websites, obfuscated scripts, and sophisticated evasion techniques, demonstrating a high level of operational sophistication.
This intelligence report details a hybrid cryptocurrency investment scam campaign targeting users in Asia, particularly Japan. The scam combines malvertising techniques to attract victims with pig butchering tactics using AI-powered chatbots for sustained engagement. Victims are lured through social media ads impersonating financial experts, directed to lure websites, and then to messaging apps where automated bots manipulate them into making increasingly large investments. The campaign uses over 23,000 domains, many generated algorithmically, and shows signs of expanding globally. This approach represents a scalable, automated evolution of traditional investment fraud methods, potentially transforming labor-intensive scams into more efficient operations.
Infoblox security researchers have discovered a group of malicious domains hosting cryptocurrency scams, some linked to hacked YouTube channels. The domains, initially registered under CryptDesignBot, frequently change registrars to conceal information. They use lookalike domains to impersonate legitimate brands. Hacked YouTube channels are exploited to promote scam crypto domains through fake livestreams. The scams often claim to double cryptocurrency, mimicking old RuneScape scams. Many domains use keywords associated with celebrities and brands like Elon Musk and Tesla. Protective measures include implementing protective DNS, securing cookies, using HTTPS, generating random session IDs, and setting session timeouts. Infoblox's BloxOne Threat Defense offers protective DNS capabilities to combat sophisticated threats.
The report details a malware attack on a large Polish organization involving fake CAPTCHA techniques. It describes the initial infection vector, where users were tricked into running malicious code through a Windows+R shortcut. The analysis covers two main malware families: Latrodectus (version 2.3) and Supper. The report provides technical details on the malware's functionality, communication protocols, and persistence mechanisms. It also includes indicators of compromise, such as C2 server IP addresses and file hashes. The authors emphasize the importance of employee education and monitoring for unusual events to mitigate such threats.
A malware campaign targeting macOS users uses typosquatted domains impersonating the Homebrew package manager to trick victims into executing malicious commands. The attack delivers Cuckoo Stealer, a credential harvester that establishes persistence, bypasses Gatekeeper, and exfiltrates sensitive data including browser credentials and cryptocurrency wallets.
A new malware-as-a-service (MaaS) called TrustConnect has been discovered masquerading as a legitimate remote monitoring and management (RMM) tool. The malware, classified as a remote access trojan (RAT), uses a fake business website as its command and control center and MaaS portal. Priced at $300 per month, it offers features like a web-based C2 dashboard, automated payload generation with digital signatures, and remote desktop capabilities. The malware has been distributed through various email campaigns, often alongside legitimate RMM tools. Proofpoint researchers identified links between TrustConnect's creator and previous users of Redline stealer. The emergence of this new MaaS demonstrates the ongoing evolution of the cybercrime market and the thriving ecosystem of RMM abuse.
This analysis reveals the growing threat of malicious OAuth applications in Microsoft Entra ID, which attackers use for persistence and privilege escalation. The report details how these apps blend in with legitimate integrations, making detection challenging. It describes the creation of OAuth Apps Scout, an automated detection pipeline that identifies emerging malicious OAuth apps. The research uncovered multiple campaigns, including one involving 19 apps impersonating well-known brands. The report compares tactics from 2019 to 2025, showing an evolution in attacker strategies from Microsoft impersonation to third-party SaaS spoofing. It concludes with actionable defense strategies for organizations to protect against these threats.
This analysis examines the evolution of Remcos, a Remote Access Trojan that has become a significant global threat. Originally a commercial tool, Remcos now provides attackers with capabilities such as credential theft, keylogging, screen capture, and webcam control. The latest variant exhibits real-time command-and-control communication, enabling immediate surveillance. The malware uses sophisticated techniques like dynamic API resolution, encrypted configurations, and modular plugins to evade detection. It establishes persistence through registry modifications and employs cleanup routines to remove traces of its activity. The report details Remcos' infection vectors, data exfiltration methods, and its network interactions with command-and-control servers.
GrayCharlie, a threat actor active since mid-2023, compromises WordPress sites to inject links redirecting visitors to NetSupport RAT payloads via fake browser updates or ClickFix mechanisms. These infections often lead to Stealc and SectopRAT deployments. The group's infrastructure is primarily linked to MivoCloud and HZ Hosting Ltd. A cluster of US law firm sites was compromised around November 2025, possibly through a supply-chain attack. GrayCharlie uses two main attack chains: one involving fake browser updates and another using ClickFix-style lures. The group's objectives appear to focus on data theft and financial gain, with potential access selling to other threat actors.
A Chinese-speaking cybercrime group, REF4033, has orchestrated a massive SEO poisoning campaign, compromising over 1,800 Windows web servers worldwide using the BADIIS malware. The campaign operates in two phases: serving keyword-stuffed HTML to search engine crawlers and redirecting victims to illicit websites. The group deploys BADIIS, a malicious IIS module, to hijack legitimate servers for manipulating search engine rankings and facilitating financial fraud. The campaign primarily targets the APAC region, with China and Vietnam accounting for 82% of compromised servers. Victims span various sectors, including government agencies, educational institutions, and financial services. The attackers use sophisticated techniques for stealth and anti-tampering, employing Chinese encryption standards and commercial obfuscation tools.
This analysis examines a sophisticated attack chain targeting Windows systems through social engineering. It uses fake CAPTCHA verification pages to trick users into executing malicious PowerShell commands. The multi-stage infection process ultimately deploys the StealC information stealer, a commodity malware designed to harvest sensitive data. The attack chain includes PowerShell scripts, position-independent shellcode, and a PE downloader, utilizing techniques like reflective PE loading, API hashing, and process injection to evade detection. StealC's capabilities include stealing browser credentials, cryptocurrency wallets, Steam accounts, Outlook credentials, and system information. The malware uses encrypted C2 communication and operates without persistence, making it particularly stealthy.
A coordinated campaign of Chrome extensions posing as AI assistants has been uncovered, affecting over 260,000 users. These extensions, while appearing legitimate, embed remote, server-controlled interfaces inside extension-controlled surfaces, granting access to sensitive browser capabilities. The campaign consists of 30 different extensions sharing the same codebase, permissions, and backend infrastructure. Key features include remote iframe as the core UI, page content extraction, voice recognition capability, and Gmail integration. The extensions communicate with infrastructure under the tapnetic.pro domain, using subdomain segmentation for logical separation. The campaign employs extension spraying tactics to evade takedowns and quickly restore distribution. This approach breaks the browser security model, potentially allowing data harvesting and user behavior monitoring.
A malicious campaign exploiting Google Groups to distribute Lumma Stealer and Ninja Browser malware has been uncovered. The attackers infiltrate industry-related forums, posting seemingly legitimate technical discussions with embedded malicious download links. For Windows users, the payload is Lumma Stealer, a credential-harvesting malware. Linux users are directed to download a trojanized Chromium-based browser called Ninja Browser, which installs malicious extensions and persistence mechanisms. The campaign utilizes Google's trusted ecosystem to bypass security measures and increase user confidence. Over 4,000 malicious Google Groups and 3,500 Google-hosted URLs have been identified in this global operation, posing significant risks to organizations including credential theft, account takeover, and remote command execution.
LockBit 5.0, the latest version of the notorious ransomware, has been released with support for Windows, Linux, and ESXi systems. This update brings improved defense evasion, faster encryption, and enhanced modularity. The Windows variant employs extensive anti-analysis techniques, while Linux and ESXi versions remain unpacked. All variants share a common encryption scheme using XChaCha20 and Curve25519. LockBit 5.0 demonstrates a focus on enterprise and infrastructure targets, including explicit support for Proxmox virtualization. The group's data leak site reveals a primary focus on the U.S.business sector, with victims spanning various industries. LockBit's infrastructure has shown connections to SmokeLoader, suggesting possible cooperation or infrastructure reuse among malware operators.
An attack campaign targeting organizations in the US, Canada, UK, and Northern Ireland exploits ConnectWise ScreenConnect vulnerabilities. The attack chain begins with a spoofed email containing a malicious .cmd attachment, which executes silently, escalates privileges, disables Windows SmartScreen, and removes the Mark-of-the-Web. It then installs a legitimate Remote Monitoring and Management tool, ScreenConnect, which is abused as a Remote Access Trojan for persistent command-and-control access. The campaign focuses on sectors with high-value data, including government, healthcare, and logistics. The attackers use various techniques to evade detection, including UAC bypass, registry modification, and silent MSI installation. The ScreenConnect client used has a revoked certificate, highlighting the importance of blocking vulnerable software versions and enforcing strict RMM allowlists.
Threat actors have been observed exploiting Net Monitor for Employees Professional and SimpleHelp software in ransomware operations. These legitimate tools were used for remote access, command execution, and persistence. The attackers disguised Net Monitor as Microsoft OneDrive and configured SimpleHelp with cryptocurrency-related keyword triggers. In one case, the attack led to an attempted deployment of Crazy ransomware. The intrusions involved initial access through compromised VPN accounts, followed by the installation of these tools for remote control and monitoring. The shared infrastructure and tactics suggest a single threat actor or group behind these activities, with objectives including cryptocurrency theft and ransomware deployment.
A convincing lookalike of the popular 7-Zip archiver site has been serving a trojanized installer that silently converts victims' machines into residential proxy nodes. The fake site, 7zip[.]com, distributes a functional copy of 7-Zip alongside concealed malware. The malware deploys three components: Uphero.exe (service manager), hero.exe (proxy payload), and hero.dll (supporting library). It establishes persistence through Windows services, manipulates firewall rules, and profiles the host system. The primary function is to enroll infected hosts as residential proxy nodes, allowing third parties to route traffic through victims' IP addresses. This campaign appears to be part of a broader operation with similar tactics used for other fake installers. The malware incorporates multiple evasion techniques and uses encrypted communications.
Between June and December 2025, state-sponsored threat group Lotus Blossom compromised the hosting infrastructure for Notepad++, allowing them to intercept and redirect update traffic. This enabled selective targeting of users primarily in Southeast Asian government, telecommunications and critical infrastructure sectors. Two infection chains were identified - one using Lua script injection to deliver Cobalt Strike and another using DLL side-loading for a Chrysalis backdoor. The campaign affected additional sectors across South America, US, Europe and Southeast Asia including cloud hosting, energy, financial, government, manufacturing and software development. The attack exploited insufficient verification in older versions of the Notepad++ updater to serve malicious installers to targeted victims.
A widespread campaign is distributing the RenEngine loader malware disguised as pirated games and software. The loader uses a modified Ren'Py game engine to deliver payloads like Lumma and ACR stealers. It employs sophisticated techniques including sandbox evasion, process injection, and modular design. The infection chain involves decrypting and launching malicious code through legitimate applications. RenEngine has affected users globally, with Russia, Brazil, Turkey, Spain and Germany most impacted. The campaign highlights risks of pirated software and the need for robust security measures.
VoidLink is a Linux C2 framework that generates implant binaries for cloud and enterprise environments. The implant, likely built using an LLM coding agent, demonstrates advanced capabilities including multi-cloud targeting, container awareness, and kernel-level stealth. It fingerprints cloud environments across AWS, GCP, Azure, Alibaba Cloud, and Tencent Cloud, harvesting credentials and detecting container runtimes. The malware includes plugins for container escape and Kubernetes privilege escalation, as well as a kernel-level rootkit that adapts its approach based on the host's kernel version. C2 communications use AES-256-GCM over HTTPS, disguised as normal web traffic. VoidLink highlights the growing concern of LLM-generated implants reducing the skill barrier for producing sophisticated malware.
