A malware-as-a-service campaign named Weedhack targets Minecraft users by distributing malicious Java JAR files via SEO poisoning and YouTube videos. The malware steals credentials, system information, and can remotely control infected systems. It is notable for its ease of access, free tier, and appeal to younger users, with infections primarily in the U. S.and several other countries. Additionally, a large CountLoader campaign spreads cryptocurrency clipper malware via cracked software, and a separate campaign distributes cryptocurrency miners through pirated content sites. These campaigns leverage sophisticated persistence and evasion techniques and have been active since early 2026.
The WeedHack malware campaign is a large-scale operation targeting Minecraft players by distributing malicious mods, clients, cheats, and utilities. Since January 2026, it has infected over 116,000 systems globally, primarily in the US, Germany, India, and the UK. The malware operates as a malware-as-a-service (MaaS) infostealer, offering free and premium tiers that steal credentials, session IDs, cookies, and cryptocurrency wallet data, and provide remote access capabilities. Distribution relies heavily on YouTube videos and SEO poisoning to lure victims to malicious download sites. The campaign's scale is reflected in thousands of unique malicious files and hundreds of distribution URLs. Users are advised to only download Minecraft mods from official sources and use the in-game Marketplace for safety.
Microsoft is working to address a widespread service issue affecting the mail flow pipeline for Exchange Online customers across North America and Germany. [...]
Iran's Ministry of Intelligence has broadened its Handala brand beyond cyber operations to include physical threats and influence campaigns targeting US and Israeli interests. The expansion encompasses multiple personas: Handala Popular Resistance Front claiming physical attacks inside Israel, VIPEmployment recruiting proxies globally for espionage and sabotage, and MOISIRAN conducting surveillance operations. These entities engage in coordinated amplification across platforms, soliciting individuals to conduct attacks for financial rewards. The consolidation creates a multi-domain threat combining hacktivist activities with physical operations, espionage recruitment, and influence campaigns. This approach leverages Handala Hack Team's recognition to amplify recruitment efforts while increasing risks to law enforcement, military, intelligence personnel, and critical infrastructure across targeted regions.
JSMonoGlyphRAT is a persistent backdoor malware actively targeting US enterprises, primarily delivered via phishing emails disguised as purchase orders, quotes, and business proposals. It has been confirmed to affect organizations in technology, telecom, education, and MSSP sectors. The malware is notable for evading most antivirus detection tools. Once installed, it enables attackers to deploy ransomware, steal data, and disrupt business operations. There is no information on available patches or official remediation. The threat is currently assessed as medium severity based on its impact and targeting profile.
A coordinated smishing operation spanning 19 countries across Europe, the Americas, and the Caucasus has been exposed, originating from fraudulent SMS messages impersonating Romania's government payment portal Ghișeul.ro. Investigation revealed 1,628 malicious URLs linked by a single 128-character campaign identifier, targeting government portals, traffic police departments, postal services including DPD and SEUR, tax authorities, and telecommunications providers like T-Mobile and Vodafone. The infrastructure utilizes 32 backend IP addresses distributed across Tencent Cloud, Alibaba Cloud, Cloudflare CDN, and ALEXHOST Moldova. Threat actors employ two distinct phishing templates: a Vue.js single-page application and a Bootstrap-based clone, executing a four-stage credential harvesting process that collects complete payment card details through fabricated traffic fines, toll payments, and delivery notifications.
Researchers uncovered a massive fraud ecosystem targeting the 2026 FIFA World Cup, identifying over 4,300 fraudulent domains impersonating FIFA's official website since August 2025. At the center operates GHOST STADIUM, a Chinese-speaking threat actor running a sophisticated phishing campaign across 300+ domains using a pixel-perfect clone of FIFA's authentication system. The operation harvests credentials, sells fake tickets, and processes payments through five distinct channels including cryptocurrency. Estimated losses from premium ticket fraud alone range from $71 million to $474 million, with total campaign losses potentially reaching billions. Six distinct fraud schemes operate in parallel: credential phishing, fake ticket sales, counterfeit merchandise, fake streaming platforms, fraudulent betting sites, and infostealer-driven credential theft. Over 2,513 FIFA account credentials are already circulating on dark-web markets. The campaign exploits Facebook advertising as its primary distribution chann...
The Iranian IRGC-affiliated threat actor Nimbus Manticore launched sophisticated cyber operations during Operation Epic Fury, the US military campaign against Iran beginning February 28, 2026. The campaigns targeted organizations in aviation and software sectors across the United States, Europe, and Middle East using career-themed phishing lures. For the first time, the actor employed SEO poisoning techniques and introduced MiniFast, a previously undocumented backdoor showing signs of AI-assisted development. The operations leveraged AppDomain hijacking and abused legitimate Zoom installer execution flows for malware deployment. The actor demonstrated rapid adaptation capabilities during wartime conditions, maintaining high operational availability while expanding targeting to US-based aviation companies. Multiple campaign waves were observed from February through April 2026, with persistent infrastructure and evolving techniques.
Unit 42 researchers identified six new remote access Trojan variants deployed by Iran-nexus APT group Screening Serpens between February and April 2026, coinciding with a regional conflict starting February 28, 2026. The group targeted entities in the U.S., Israel, UAE, and other Middle Eastern locations, primarily focusing on technology sector professionals through highly tailored social engineering using personalized recruitment lures. Two new malware families, MiniUpdate and MiniJunk V2, were discovered featuring advanced techniques including AppDomainManager hijacking that manipulates .NET application initialization to disable security mechanisms. The campaigns demonstrated increased technical capabilities and operational resilience, with each variant using dedicated C2 infrastructure hosted on Azure. The attacks leveraged DLL sideloading, scheduled tasks for persistence, and sophisticated evasion techniques to maintain long-term access for espionage purposes.
A solo Russian-speaking threat actor tracked as 'bandcampro' operated a five-year MAGA-themed Telegram channel with approximately 17,000 subscribers, initially forwarding cryptocurrency scam content before pivoting to AI-automated operations in September 2025. The actor utilized jailbroken Google Gemini to generate QAnon-styled posts, deploy infrastructure, manage stolen API keys, and run credential theft operations targeting politically engaged American audiences. The campaign weaponized cultural alignment with QAnon and MAGA communities to facilitate cryptocurrency fraud rather than political influence. Through AI assistance, the actor cracked 29 WordPress admin credentials, infiltrated at least one company, deployed remote access trojans disguised as cryptocurrency wallets, and operated a gamified chatbot called 'QFS 2.0 Terminal'. The operation demonstrates how frontier AI systems enable scalable, low-cost cybercriminal activities by allowing a single actor to perform tasks traditionally requiring enti...
Financially motivated eCrime actors are conducting an ongoing infostealer campaign targeting software developers through SEO poisoning techniques. The operation impersonates AI platforms including Gemini CLI and Claude Code, as well as developer tools like Node.js, Chocolatey, and KeePassXC. Attackers position fake domains above legitimate search results, directing victims to malicious installation pages that deliver fileless PowerShell-based infostealer malware. The malware executes entirely in memory, disables Windows Defender telemetry by patching ETW and AMSI, and harvests credentials from browsers, collaboration platforms, VPN clients, and cloud storage. Stolen data includes OAuth tokens, CI/CD credentials, and corporate VPN details, providing direct enterprise network access. The campaign leverages bulletproof hosting infrastructure and over 30 typosquatted domains registered between March and April 2026, primarily targeting users in the United States and United Kingdom.
European governments are transitioning from encrypted messaging applications like Signal and WhatsApp to sovereign Matrix-based solutions. This shift follows successful phishing campaigns, primarily attributed to Russian intelligence services, exploiting Signal's linked devices feature to gain persistent access to political communications. While Signal was initially recommended for external communications, scope creep led to its widespread use for sensitive statecraft discussions. Matrix-based systems offer advantages including federated architecture, government-controlled identity platforms, and customizable data retention policies. However, these homegrown solutions introduce new security vulnerabilities and implementation challenges. The walled-garden nature of current sovereign systems limits their utility for international diplomacy, suggesting Signal will continue to be used for communications with external parties despite the security concerns.
Fox Tempest provides a service that cybercriminals use to distribute ransomware and other malware disguised as legitimate software. The post Microsoft Disrupts Malware-Signing Service Run by ‘Fox Tempest’ appeared first on SecurityWeek .
In early May 2026, Instructure confirmed a breach affecting its Canvas learning platform after detecting unauthorized activity on May 1. ShinyHunters exploited the Free-For-Teacher account program, compromising the Canvas platform directly and exposing names, email addresses, student IDs, and private messages. The exposure window ran from April 30 to May 7, 2026. ShinyHunters claims 3.6 TB of data covering approximately 275 million users across 9,000 schools globally, including institutions in the US, Australia, and EU. This represents ShinyHunters' second attack against Instructure in eight months. Instructure shut down the Free-For-Teacher program permanently, rotated API keys and privileged credentials, and engaged forensic investigators. The stolen data enables personalized phishing campaigns targeting students and faculty, with attackers potentially having write access sufficient to deface login pages at multiple institutions.
A sophisticated credential theft campaign targeting over 35,000 users across 13,000 organizations was observed between April 14-16, 2026. The operation primarily impacted the United States, particularly healthcare and financial services sectors. Attackers used code of conduct themed phishing emails masquerading as internal compliance communications, sent through legitimate email delivery services from attacker-controlled domains. Victims received polished HTML emails with PDF attachments containing fake disciplinary logs and CAPTCHA gates to evade automated analysis. The multi-stage attack chain ultimately directed users to counterfeit Microsoft authentication pages operating as adversary-in-the-middle infrastructure, enabling real-time interception of credentials and session tokens while bypassing multi-factor authentication defenses.
KATARU is an IoT malware variant identified in 2026 that uses Telnet credential brute-forcing to infect devices. It combines traditional Mirai-style botnet features with multiple Linux local privilege escalation exploits and advanced persistence mechanisms across Linux and embedded platforms. The malware uses encrypted command and control communications and employs anti-analysis and decoy traffic techniques. Artifacts suggest AI-assisted development, including mismatched shellcode and untested cross-platform logic. It supports various DDoS attack methods and SSH brute-forcing.
DinDoor is a Deno-based backdoor delivered via MSI files that exploits the Deno runtime to execute obfuscated JavaScript for command and control communications and system fingerprinting. Two analyzed samples show different execution behaviors: one writes JavaScript to disk while the other executes entirely in memory. Both samples use identical fingerprinting algorithms generating unique victim identifiers. One sample contains an embedded JWT exposing campaign metadata and the domain serialmenot[.]com, identified as multi-tenant infrastructure serving multiple threat actors including state-sponsored groups and cybercriminals. Analysis of HTTP response headers enabled identification of 20 active C2 servers across 15 autonomous systems, many using bulletproof hosting providers. The malicious infrastructure uses Caddy proxy with distinctive headers allowing network-based detection.
Attackers are leveraging the trusted reputation of Foxit PDF Reader, used by over 650 million people, to distribute malicious installers disguised as legitimate software. Rather than exploiting vulnerabilities, threat actors impersonate the vendor through fake installers with document-themed filenames that bypass user suspicion. When executed, these files display decoy passport images while downloading malicious MSI packages that deploy UltraVNC remote access tools disguised as GPU drivers. The attack establishes persistence through registry modifications and firewall exceptions, connecting to attacker-controlled infrastructure for complete remote system control. Telemetry indicates broad distribution across Germany, the United States, the United Kingdom, and Ukraine. This campaign demonstrates how brand impersonation combined with social engineering proves more effective than technical exploits, relying on user trust and behavioral patterns rather than software vulnerabilities.
Investigation of DPRK-linked fake IT worker infrastructure began after cryptocurrency researcher ZachXBT identified domain luckyguys[.]site connected to illicit payments. Analysis of 30 days of network activity associated with IP 163.245.219[.]19 revealed concentrated VPN usage patterns, with Astrill VPN (37.5%), Mullvad (32.25%), and Proton VPN (6.25%) being prominent. American and Latvian residential IPs communicated with the infrastructure, showing frequent Astrill VPN usage and connectivity to Gmail, ChatGPT, and Workana freelance platform. A second IP, 216.158.225[.]144, was discovered through X509 certificate analysis. Traffic dropped sharply following public exposure, consistent with adversary behavior of abandoning attributed infrastructure. The activity suggests a distributed network of remote IT workers participating in sanctions evasion workflows, leveraging AI tools and freelance platforms to obtain employment under false identities.
