Acronis Threat Research Unit identified two espionage campaigns targeting Cambodian government entities in defense and public works sectors, attributed to a cluster tracked as Khmer Shadow. Both campaigns delivered a custom C++ loader named NIGHTFORGE through government-themed lures in self-extracting archives. NIGHTFORGE employs sophisticated evasion techniques including NTDLL unhooking and Hell's Gate syscall resolution to decrypt and execute a Havoc Demon payload in memory. The loader utilizes DLL sideloading through a legitimate VMware-signed binary (VMwareNamespaceCmd.exe) and establishes persistence via COM-based scheduled tasks. Despite advanced technical capabilities, the actor demonstrated poor operational security by reusing identical payloads and infrastructure across targets. The campaigns targeted Cambodia's Information Collection Bureau and Ministry of Public Works and Transport using meeting-themed social engineering lures.
An investigation into phishing activity targeting users across the Middle East and North Africa uncovered SniperDz, a centralized Push-Notification-as-a-Service and Phishing-as-a-Service platform. The operation uses fraudulent Facebook accounts impersonating politicians, public figures, and trusted organizations to promote fake offers including free mobile internet packages and financial compensation. Victims are redirected through trusted link-aggregation services like Linktree and Linkbio to evade detection. SniperDz provides 80 phishing templates mimicking over 30 global brands across financial services, social media, streaming, and gaming platforms. The infrastructure employs browser notification abuse, history manipulation creating a back-button prison, premium SMS subscriptions, premium-rate calls, investment scams, and affiliate marketing for monetization. Analysis revealed over 900 suspicious domains linked to shared hosting infrastructure and a recurring VAPID public key connecting multiple campai...
US Federal authorities have seized 13 domains allegedly used in a Chinese intelligence-linked operation to recruit Americans with access to classified government information. The websites posed as legitimate consulting firms, offering vague consultancy and advisory roles to current and former US government employees, military personnel, and security clearance holders. The operation, which began in November 2023, used fake company websites, online job postings, and social media recruiting to approach potential targets. Recruiters offered paid consulting work, then pressured candidates to share confidential insider information. The campaign employed false personas, stolen identities, AI-generated profile photos, encrypted messaging, cryptocurrency, and fake contracts to appear legitimate. Job postings appeared on platforms including Upwork, Expertia AI, and Hubstaff Talent, covering topics aligned with Chinese government interests.
Threat actors are leveraging TikTok and Instagram Reels to distribute the Vidar infostealer through fake software tutorials. Two distinct campaigns use short-form videos disguised as tutorials for unlocking premium software like Spotify. The first campaign uses accounts mimicking official Windows profiles with AI-voiced clips instructing users to run PowerShell commands that download Vidar from lookalike domains. One video achieved over 100,000 views. The second campaign uses ordinary accounts posting music-backed clips that bait users in comments to receive malicious links via direct message. These campaigns exploit platform recommendation algorithms by encouraging saves and shares. Vidar is sold as a service for $300 lifetime license and harvests credentials, financial data and authentication tokens.
SilabRAT is an advanced Remote Access Trojan offered as Malware-as-a-Service on Darkweb forums since late 2025, developed by threat actor o1oo1 and sold for $5,000 monthly. This financially-motivated tool focuses on credential theft and cryptocurrency operations, featuring Hidden Virtual Network Computing for invisible remote control, browser profile cloning to bypass session protections, and automated cryptocurrency wallet password cracking. The RAT bypasses Chrome App-Bound Encryption, performs session hijacking, and includes keylogging, clipboard monitoring, and remote desktop capabilities. Distributed through phishing and ClickFix campaigns with operator-hosted infrastructure, SilabRAT uses ChaCha20-Poly1305 encryption for command-and-control communications. The developer also offers AsmCrypt, a companion crypter service, creating a complete malware bundle from evasion to execution and remote control.
An advanced voicemail-themed phishing campaign is utilizing HTML attachments to hijack Microsoft 365 sessions through silent OAuth exploitation. Emails arrive spoofing legitimate businesses with fake voicemail notifications containing embedded HTML files. When victims click the play button, the kit triggers a rogue OAuth 2.0 request using the prompt=none parameter to steal authentication tokens from active M365 sessions. If no active session exists, victims are redirected to credential harvesters hosted on compromised infrastructure, specifically a Turkish domain hosting over 100 active campaign directories. The operation includes multiple attack vectors: fake login portals mimicking DocuSign, Outlook and Google, OAuth device code phishing interfaces, and RMM deployment disguised as document viewers. This represents a sophisticated Phishing-as-a-Service operation deploying concurrent attack types from consolidated infrastructure.
In May 2026, a new malware family named MLTBackdoor was identified, likely leveraged by ransomware-related threat actors to establish footholds for lateral movement. Delivered through multi-stage ClickFix infection chains targeting automotive-related web pages, this backdoor employs sophisticated obfuscation techniques including Mixed Boolean-Arithmetic and Control Flow Flattening. MLTBackdoor features indirect system calls, API hashing, and extensive anti-analysis checks that detect debuggers and sandboxed environments. Its capabilities include filesystem operations and a powerful Beacon Object File loader that dynamically expands functionality. The malware uses custom encrypted binary protocols over TLS with Elliptic-Curve Diffie-Hellman key exchange for command-and-control communications. Additionally, it implements a deterministic date-based Domain Generation Algorithm to maintain persistence when hardcoded C2 domains become unreachable, demonstrating advanced resilience against takedown attempts.
Threat actors are exploiting short-form video platforms like TikTok and Instagram Reels to conduct social engineering attacks. Two distinct campaign methods have been identified: professional-looking fake tutorials with AI-generated voiceovers promising free premium software, and casual videos showcasing premium features to generate engagement through comments. Both approaches direct victims to malicious websites hosting infostealer malware, particularly Vidarstealer. The campaigns leverage platform algorithms through high engagement rates including saves, shares, and comments. Attackers use multiple accounts with Windows-themed branding and manipulate PowerShell commands to download malicious executables. These techniques are difficult to counter as creators can delete warning comments and platform reporting mechanisms prove ineffective. The attacks target non-technical users seeking free access to premium services like Spotify, Microsoft Office, and other software, making social media feeds an emerging p...
A sophisticated phishing campaign exploits Amazon's brand reputation through spoofed security alerts to deliver HarborWatch Agent, a custom remote access trojan. The attack chain begins with emails impersonating Amazon security notifications about suspicious account activity, directing victims to lookalike domains. Users are presented with fake CAPTCHA verification pages that employ ClickFix social engineering techniques, instructing them to execute PowerShell commands on their own systems. The multi-stage infection downloads mysql.exe from compromised infrastructure, which communicates with a Chinese-language command and control panel branded Harbor Sentinel. The RAT collects extensive system information including OS details, architecture, CPU count, disk usage, memory status, and network configurations, exfiltrating data through API endpoints to the threat actor's monitoring infrastructure.
WhatsApp successfully identified and disrupted spear phishing attempts linked to NSO Group, a spyware firm blacklisted by the US government. The company is requesting the court to hold NSO in contempt for violating a permanent injunction that prohibited them from targeting WhatsApp and its users. The attacks involved social engineering attempts to trick users into clicking malicious links, as well as creating test accounts and groups on the platform. WhatsApp emphasizes that spyware represents a national security threat and is supporting the Spyware Accountability Initiative through significant contributions. The company continues to protect users through end-to-end encryption and encourages reporting suspicious activity while maintaining updated applications and devices.
A new post-exploitation red team tool named Splinter has been discovered on customer systems through Advanced WildFire's memory scanning capabilities. Developed in Rust programming language, Splinter is exceptionally large at around 7MB due to statically linked libraries. The tool uses a JSON configuration structure containing implant ID, C2 server details, and operational parameters. It operates through a task-based model with capabilities including Windows command execution, remote process injection, file upload/download, cloud service information gathering, and self-deletion. Communication with the C2 server occurs via HTTPS using specific URL paths for task synchronization, heartbeat connections, and file transfers. While not as sophisticated as Cobalt Strike, Splinter represents a growing variety of penetration testing tools that could potentially be misused by threat actors.
A sophisticated supply chain attack campaign has expanded to 471 affected artifacts across npm and PyPI, targeting developers through malicious packages. The campaign uses three distinct delivery methods: executable .pth startup hooks, trojanized native .abi3.so extensions that execute at import time, and a split loader-payload architecture that searches Python's sys.path. Twenty-three newly identified PyPI packages masquerade as bioinformatics tools, AI frameworks, and popular libraries like requests and Flask. The attack deploys heavily obfuscated JavaScript stealers via Bun runtime, harvesting high-value credentials including GitHub tokens, npm registry access, cloud credentials, SSH keys, and CI/CD secrets. The malware employs anti-analysis techniques with fake LLM prompt-injection headers designed to disrupt AI-assisted security scanners, while targeting developer workstations and automated build environments.
Threat actors are increasingly leveraging the global interest in artificial intelligence by impersonating popular AI platforms such as ChatGPT, Copilot, DeepSeek, and Claude in social engineering campaigns. These operations span phishing attacks, malvertising, and search engine optimization-driven tactics that ultimately lead to credential theft, financial fraud, or malware infections. Observed campaigns include ChatGPT-themed phishing collecting credit card data targeting South Africa, Claude-themed adversary-in-the-middle attacks harvesting credentials and access tokens, malvertising campaigns distributing Vidar stealer through fake AI plugin downloads, and fraudulent DeepSeek V4 installers on GitHub. The initial access broker Storm-3075 has been identified employing AI-themed malvertising, while the financially motivated actor Fox Tempest provides malware-signing-as-a-service to enhance payload legitimacy. These campaigns combine traditional social engineering tactics with AI branding to improve success...
Between April and May 2026, a likely North Korean threat actor conducted phishing campaigns targeting developers across nearly 100 organizations in finance, cryptocurrency, education, and technology sectors. The attacks used recruitment and code review themes, delivering emails with links to actor-controlled GitHub repositories hosting malicious scripts. The infection chain exploited Visual Studio Code workflows and deployed malicious Visual Studio Extensions (VSIX) requiring minimal user interaction. Cross-platform malware was executed on macOS, Linux, and Windows systems, including the open-source Overlord framework. The campaigns specifically targeted developer assets including API tokens, cryptocurrency wallets, and credentials. Attackers employed fake company personas and professional-looking repositories masquerading as legitimate cryptocurrency and blockchain projects to establish credibility and lure victims.
A coordinated PyPI compromise campaign involving 37 malicious wheel artifacts across 19 packages was detected, utilizing Python startup hooks to execute credential-stealing payloads. The attack leverages .pth files for automatic execution during Python interpreter startup, downloads the Bun JavaScript runtime, and runs obfuscated JavaScript payloads. The malware targets high-value developer and CI/CD credentials including GitHub, npm, PyPI, cloud providers (AWS, GCP, Azure), Kubernetes, Vault, SSH keys, and AI tool tokens. This represents a PyPI branch of the Shai-Hulud/Miasma campaign family, using a Hades-themed variant for GitHub exfiltration. Compromised packages included established bioinformatics tools with significant download counts, stemming from apparent maintainer account takeover. The payload employs multi-layer obfuscation, AES-GCM encryption, and exfiltrates data through GitHub repositories with distinctive markers. The campaign demonstrates cross-runtime attack capabilities and ecosystem-spe...
A newly identified China-linked espionage cluster designated OP-512 has been discovered targeting Internet Information Services (IIS) servers through advanced AI-driven detection. The operation involves deploying a sophisticated custom web shell framework consisting of three components: a file manager with command-and-control notification channel and two cryptographically authenticated command handlers. Each deployment is cryptographically unique, utilizing RSA and RC4 encryption alongside timestomping techniques to evade signature-based detection. The attacker maintained persistence for 75 days before rapid deployment of multiple access paths, privilege escalation tools including BadPotato, SweetPotato, and EfsPotato, and establishment of dual notification channels through DNS and HTTP. The framework employs hex-encoded subdomain queries for self-reporting and automated builder-generated code with randomized variables. This represents the fourth China-linked cluster documented targeting legacy IIS infrast...
Chinese threat actor VerdantBamboo compromised a victim organization and its Managed Services Provider over an 18-month period, deploying malware on network edge devices lacking EDR coverage. The initial breach involved an Egnyte Storage Sync system, where attackers exploited a sudo misconfiguration for privilege escalation and installed BRICKSTORM backdoor and AGENTPSD fallback implant. Investigation revealed the MSP's pfSense firewall was also compromised with a FreeBSD variant of BRICKSTORM. After remediation, VerdantBamboo regained access through stolen firewall credentials, enabling custom VPN access and deploying PLENET backdoor on a Synology NAS. The threat actor leveraged compromised systems as proxies to access Microsoft 365 environments while evading security controls. VerdantBamboo demonstrated operational discipline by targeting appliances without EDR capabilities and using sophisticated malware including PLENET, compiled with .NET Native AOT to hinder analysis.
A sophisticated multi-stage malware campaign targets victims through tax-themed phishing emails impersonating Indian and Japanese government authorities. The operation leverages social engineering, fraudulent tax notifications, and trusted third-party email delivery services to distribute ZIP archives containing three staged payloads. The malware implements advanced evasion techniques including DLL Search Order Hijacking, API hooking, token manipulation, Mersenne Twister-based execution logic, COM callback execution, mutated RC4 encryption, and reflective PE loading. Execution occurs primarily in memory, significantly reducing forensic artifacts. The malware establishes persistent WebSocket-based command-and-control communication through HTTP protocol upgrades, allowing malicious traffic to blend with legitimate activity. Chinese-language artifacts were observed throughout the infrastructure and code, though attribution remains at moderate confidence. The campaign demonstrates characteristics of a mature, ...
A multi-stage phishing campaign emerged in early May 2026, impersonating LinkedIn and Indeed through typosquatted domains to deliver malicious payloads. The attack chain begins with fake CAPTCHA pages distributed via Google Ads, leveraging the legacy Finger protocol and native Windows utilities. Victims are tricked into executing commands that deploy portable Python runtimes (CPython or IronPython), which then execute in-memory shellcode. The campaign delivers CastleLoader, a Malware-as-a-Service framework using ChaCha20 and RC4 encryption for C2 communications, followed by a Python-based remote access trojan. The RAT provides interactive shell control, in-memory payload execution, and persistence mechanisms. The campaign represents an evolution of browser-based social engineering, combining Living-off-the-Land binaries with Python-based delivery to maintain a fileless footprint and evade detection through legitimate system utilities.
A new extortion group called Pink, tracked as cluster CL-CRI-1147, employs voice phishing and fake IT helpdesk impersonation to compromise organizations. The gang steals employee credentials, bypasses multi-factor authentication, and exfiltrates data from cloud storage platforms like SharePoint and OneDrive. Pink threatens to leak stolen information unless ransom demands are met, setting 72-hour deadlines. The group's data-leak site launched on May 31, 2026. This approach mirrors tactics popularized by Lapsus$, Scattered Spider, and ShinyHunters. Incident responders link Pink to The Com, a loosely connected network of English-speaking hackers and extortionists. Attackers use compromised victim accounts and internal Teams messages for extortion communications, reusing domains across multiple targets.
