Threats tagged 'clickfix'

In June 2026, a new malware family named SloppyRAT was identified, likely used by ransomware-related threat actors to establish footholds for lateral movement. Delivered through multi-stage ClickFix infection chains, the malware features encrypted code blocks, EtherHiding for command-and-control resolution via Polygon JSON-RPC protocol, and multiple anti-analysis techniques including junk code and indirect system calls. SloppyRAT implements certificate pinning to prevent TLS traffic inspection and includes 47 built-in PowerShell-like commands for remote access. The infection chain uses finger.exe, IronPython, and deploys CastleLoader and CastleRAT components before installing SloppyRAT. Despite sophisticated capabilities, the codebase contains numerous software bugs affecting persistence mechanisms and other features, suggesting active development.

MacSync Stealer is a macOS information stealer and remote-access stager delivered through ClickFix social engineering and malvertising campaigns. Operating under a malware-as-a-service model, it employs sophisticated evasion techniques including process daemonization, single-byte XOR obfuscation, and in-memory AppleScript execution to bypass Apple Gatekeeper, XProtect, and EDR solutions. The malware exfiltrates credentials, browser data, cryptocurrency wallets, and SSH keys through fault-tolerant 10MB chunked uploads to command-and-control infrastructure. MacSync targets professionals in software engineering, cryptocurrency, fintech, and corporate environments across North America, Europe, and Asia-Pacific regions, with campaigns impersonating legitimate services like Google Meet, Claude AI, Docker, and TradingView to trick victims into executing malicious Terminal commands.

Malware#credential theft#obfuscationUnited States+8

An investigation revealed a sophisticated cryptocurrency and credential-stealing operation using Amatera stealer as the primary payload. The attack chain leverages Cloudflare Workers to inject JavaScript stored on BNB Smart Chain, presenting fake Google CAPTCHA prompts that lead to WebDAV-based DLL execution. Two parallel infection chains were identified, one loading through a DLL named 'pf.ch' and another through 'verification.google', both delivering Amatera stealer with different secondary payloads. The 'pf.ch' variant deployed ZigCryptoStealer via NativeAOT loader and a Go-based reverse proxy, while the 'verification.google' variant installed NetSupport Manager with C2 infrastructure in Russia. The operation affects numerous countries with primary focus on stealing cryptocurrency wallets, credentials from password managers, and various authentication data through extensive collection rules targeting over 400 applications.

Malware#windows#ciscoUnited States+5

The TerminalFix campaign is a sophisticated multi-stage intrusion targeting organizations via compromised websites that display fake Cloudflare CAPTCHA overlays. Victims are tricked into executing malicious PowerShell commands that download and execute a signed legitimate binary alongside a malicious DLL for sideloading. This leads to steganographic payload extraction, extensive Active Directory reconnaissance, and deployment of a Python-based reverse-tunnel implant providing persistent network-level proxy access. The campaign enables attackers to pivot within the network, conduct domain enumeration, and maintain stealthy persistent access. Although no direct downstream actions were observed, the access gained could facilitate privilege escalation, data exfiltration, and ransomware deployment. The campaign combines advanced evasion techniques and persistent network access, posing a serious threat to enterprise environments.

A phishing campaign abuses npm package mirrors to host fake Cloudflare Captcha pages embedded in malicious npm packages. These pages are served via trusted mirror domains, increasing their credibility and facilitating phishing attacks such as ClickFix delivery. The campaign uses typosquatted domains and legitimate key-value storage services to redirect victims dynamically. Downloading the packages is not harmful, but accessing the HTML files through mirror URLs exposes users to phishing risks.

A sophisticated multi-stage loader dubbed PavinLoader has been identified across multiple distribution campaigns including ClickFix attacks, fake software downloads, and malicious RenPy games. The loader employs heavily obfuscated .NET DLLs, abuses legitimate Windows tools like MSBuild, and utilizes EtherHiding technique to retrieve command-and-control domains via blockchain. The infection chain consists of four main stages: a Loader DLL performing anti-forensics, an EtherHiding Loader obtaining C2 infrastructure, an Anti-Analysis DLL checking for virtualized environments, and a PE Loader delivering final payloads including Amatera Stealer. Evidence suggests PavinLoader may be offered as a Loader-as-a-Service, with common artifacts found across over 200 related files. The campaigns demonstrate sophisticated evasion techniques including custom obfuscation, API hashing, and extensive anti-analysis checks targeting virtualized environments and specific geographic regions.

Multiple ClickFix malware campaigns have been identified using three delivery methods: MSI packages with DLL sideloading, NodeJS-executed JavaScript, and Python 3.5 payload execution. These campaigns use aggressive social engineering, including phone calls directing victims to compromised WordPress sites. Post-compromise activities include extensive system discovery and Active Directory enumeration. The campaigns share infrastructure and tactics linked to the Lorem Ipsum malware family and Vanilla Tempest adversary, with potential ransomware deployment as a final goal.

This macOS malware campaign uses social engineering via fake CAPTCHA pages to trick users into running malicious AppleScript commands. It deploys a persistent backdoor that leverages EtherHiding by storing command-and-control (C2) addresses in Polygon blockchain smart contracts, complicating detection. The malware maintains persistence through LaunchAgents and delivers multiple payloads including the AMOS stealer, which targets cryptocurrency wallets, browser credentials, and macOS Keychain data, as well as the XMRig cryptominer for ongoing revenue. The campaign employs advanced evasion techniques such as character-ID obfuscation and abuse of legitimate macOS utilities. Blockchain transaction analysis reveals the full history of C2 infrastructure rotation and funding, aiding defenders despite the malware's memory-resident nature.

Following Black Hat and DEF CON conferences, a threat actor targeted attendees through X direct messages, posing as CoinDesk's VP and Head of Marketing to establish trust under the pretext of conference planning. The campaign employed a malicious Google Apps Script embedded in a Google Doc that presented ClickFix-style instructions and manual download options. The attack delivered different payloads based on the victim's operating system: macOS users received AMOS infostealer, while Windows users were infected with NetSupport RAT, a Ledger wallet implant, and a TLS-intercepting proxy. A secondary lure masqueraded as a DocSend installer to deliver additional payloads. The operation demonstrated sophisticated social engineering by leveraging trusted platforms and post-conference networking expectations.

A new ClickFix campaign targets Windows users with a NodeJS-based infostealer delivered via malicious MSI installers. This highly adaptable remote access Trojan minimizes forensic footprints through dynamic capability loading, with core stealing modules and communication protocols delivered in-memory only after C2 connection. The malware routes gRPC streaming traffic over Tor network for persistent, masked bidirectional channels. An operational security failure exposed server-side admin panel protocol definitions, revealing a malware-as-a-service backend designed to manage multiple operators and automate cryptocurrency asset tracking. The modular architecture delivers malicious logic dynamically as strings executed in-memory, bypassing static signature detection while supporting full RAT functionality including shell command execution and wallet tracking.

On 5 May 2026, a Jamf Protect deployment blocked a download attempt from jacksonvillemma[.]com, four days after the operator's previous MacSync C2 was publicly disclosed. The new C2's TLS certificate was issued within 24 hours of that disclosure. Analysis revealed a Stage 2 zsh loader containing a static api-key value observed across four distinct C2 domains spanning December 2025 to May 2026. URI-pattern pivoting through any.run identified eleven additional candidate C2 domains dating back to February 2026, suggesting parallel infrastructure operation rather than sequential rotation. The loader exfiltrates macOS credentials, browser data, and cryptocurrency wallets, and transmits the victim's account password in cleartext via URL query strings, making it visible in web proxy logs.

C2Looper is a Rust-based backdoor malware identified in mid-2026, associated with ransomware threat actors. It provides remote shell execution, reconnaissance, and payload deployment capabilities. Initial versions communicate via plaintext HTTP, while later versions use GitHub repositories for command-and-control, storing commands and exfiltrated data in JSON files. Version 2 adds features such as drive enumeration, shellcode injection, and file listing. Delivery is assessed with low to medium confidence to occur through multi-stage ClickFix infection chains. The malware is actively developed and likely used by initial access brokers to facilitate ransomware and data theft operations.

An investigation uncovered a sophisticated infection chain beginning with a ClickFix lure and utilizing a legitimately signed IBM SPSS IDE alongside four decoy DLLs and a date-formatting API as a trampoline. This chain deploys BabaDeda loader stage that ultimately delivers CNCMachineRMS, a 1.14 MB x64 remote administration implant with no imports and runtime-built strings. The implant provides operators with comprehensive remote access capabilities including an interactive shell, file manager, screen capture, local account backdoor, and seven persistence mechanisms. It employs a custom scripting language and uses the same binary container format for configuration and C2 traffic. The implant beacons every 600 seconds, creates privileged local accounts, and supports twenty typed commands for downloading and executing additional payloads, indicating hands-on-keyboard access with follow-on stages determining actual damage.

A sophisticated macOS malware campaign leverages ClickFix social engineering to infect victims. The attack begins with a fake CAPTCHA prompt delivered via email links, tricking users into executing malicious commands in Terminal. This downloads a profiling script that collects system information and deploys architecture-specific Go-based Mach-O payloads. The stealer targets browser passwords, Apple Keychain credentials, and cryptocurrency wallets. Its most notable feature is a DRAIN function that gradually siphons cryptocurrency from victims' wallets by redirecting portions to attacker-controlled accounts. The malware supports Bitcoin, Litecoin, Dogecoin, Monero, Ethereum, and XRP. Infrastructure analysis reveals hosting through Aeza Group, a sanctioned Russian bulletproof hosting provider. The malware achieves persistence through macOS Background Task Management and uses various evasion techniques including Gatekeeper bypass and credential harvesting via fake system prompts.

In this article Activity overview How ClickFix works Campaign overview ClickFix moved from open pages to fingerprinting gates The fingerprinting gate Mitigation and protection guidance Indicators of compromise (IOC) References Learn more Microsoft Threat Intelligence observed a macOS ClickFix campaign distributing infostealers, including MacSync and Atomic Stealer (AMOS) , through a large cluster of look-alike domains. The campaign evolved from broadly serving ClickFix lures to using a server-side browser-fingerprinting gate that shows the lure primarily to visitors whose environment appears consistent with a genuine macOS browser. This cloaking limits visibility for crawlers, sandboxes, and some automated analysis workflows. The blog details the domain pattern, fingerprinting checks, infection chain, detection coverage, and hunting pivots that defenders can use to identify related activity. Activity overview Microsoft Threat Intelligence has been tracking a macOS ClickFix operation that distributes information-stealing malware through a large family of algorithmically named domains. Over several weeks of monitoring, Microsoft observed a notable shift in tradecraft: the same infrastructure moved from openly serving the malicious command in the served page’s HTML source to concealing the lure behind a server-side fingerprinting gate that reveals the payload only to visitors the server assesses as a genuine macOS target. The chain ultimately delivers information stealers such as MacSync or Atomic Stealer (AMOS). This activity is consistent with the broader shift in macOS ClickFix tradecraft that Microsoft Threat Intelligence previously documented , in which threat actors instruct users to run Terminal commands that retrieve remotely hosted content rather than the traditional approach of delivering a disk image for manual installation. The cluster described here is notable for two reasons: its domains are mass-produced by a recognizable name generator, and it adopted server-side cloaking on existing infrastructure, giving defenders a clear before-and-after view of the same operation. In this blog, we describe the campaign’s domain-generation pattern, the two delivery phases we observed, the fingerprinting gate that now fronts the infrastructure, and the end-to-end infection chain. We also provide hunting guidance, mitigation recommendations, and defanged indicators of compromise. How ClickFix works ClickFix is a social-engineering technique where attackers persuade users to copy and run a command in Terminal instead of downloading a traditional macOS application. The lure usually appears as a fake verification step, software update, download error, or CAPTCHA, with the command disguised as something required to complete the action. Because execution starts from a user-run Terminal command rather than a downloaded app bundle, the flow can avoid parts of the normal macOS application trust path, including quarantine handling, code-signing evaluation, and notarization checks typically applied to downloaded applications. In this campaign, ClickFix remains the delivery mechanism, but the important change is that the lure is no longer shown to every visitor. The page first profiles the visitor through a browser-fingerprinting gate and primarily requests consistent with a genuine macOS browser environment receive the fake “Download for macOS” page and copied Terminal command. Figure 1a – The counterfeit “Download for macOS” page served to a qualifying visitor by a cloaked gate (apricotfilepoint[.]com). The page displays a forged “Verified Publisher” badge and offers a one-click Copy of an obfuscated curl one-liner. Delivery is conditional. During analysis, the same URLs returned different content to different requests. In some case the macOS ClickFix lure, and in others an apparently benign decoy page. In our testing, a request presenting a Windows browser received a decoy page such as a fake browser-extension or VPN landing page (Figure…

A sophisticated ClickFix campaign variant uses social engineering to trick victims into executing commands via the Windows Run dialog. The technique leverages rundll32.exe to load remote non-DLL payloads by ordinal export #1 over WebDAV connections tunneled through HTTPS port 443. Multiple incidents at a single organization show evolving obfuscation methods including WMI process spawning, caret insertion, and runtime string assembly to evade detection. The attack chain utilizes trusted Windows binaries like pcalua.exe to break process lineage tracking. No files are dropped to disk, and payloads are invoked by ordinal rather than named functions. Successful attacks exfiltrated browser credentials and sensitive documents totaling 13MB. The most obfuscated variant evaded automated EDR detection entirely, being discovered only through proactive threat hunting focused on ordinal execution patterns rather than keyword detection.

Insikt Group identified four new malware families from TAG-195 (Golden Chickens, Venom Spider), a financially motivated malware-as-a-service developer. The families include TinyEgg, a lightweight initial-access backdoor; ChonkyChicken, which expands capabilities with browser credential theft and session automation; a modularized ChonkyChicken variant using controller-and-plugin architecture; and ChromEggscalator, a modified Chrome encryption-bypass tool. TAG-127 has been observed deploying TinyEgg via ClickFix campaigns using fake security verification pages. The modular architecture reduces static detection exposure and enables selective capability provisioning to operators. All families share consistent architectural traits including WebSocket command-and-control, Run key persistence, string obfuscation, and execution via legitimate Windows binaries. This represents a deliberate architectural transition toward operator-driven tooling within the TAG-195 MaaS ecosystem.

Between late April and mid-June 2026, Microsoft observed heightened ACR Stealer activity targeting enterprise environments through ClickFix social engineering lures. This information-stealing malware, associated with Amatera Stealer rebranding and offered as malware-as-a-service, deployed through two distinct campaigns. The first utilized WebDAV-delivered payloads with Python loaders and blockchain-based command-and-control resolution. The second employed a fileless approach using MSHTA and steganography-concealed payloads within images. Both campaigns harvested browser credentials, authentication tokens, and sensitive documents from compromised systems. Threat actors leveraged obfuscated PowerShell scripts, scheduled task persistence, and in-memory execution techniques to evade detection. Notable tactics included masquerading as legitimate software updates, utilizing Windows DPAPI for credential decryption, and targeting PDF and Microsoft 365 documents. The blockchain dead-drop technique enabled dynamic i...

Microsoft released an unprecedented 622 vulnerability patches in July's Patch Tuesday, with 62 critical severity issues and three zero-days, two actively exploited. This represents more vulnerabilities than all of 2018 combined and marks a dramatic shift from the typical five patches issued in July two years prior. Microsoft attributes this surge to AI frontier model-accelerated vulnerability research. While major vendors like Microsoft possess resources to handle this volume, smaller companies face significant challenges. The concern extends beyond discovery to deployment, as traditional IT patch testing and stability review processes struggle under this unprecedented load. Organizations must differentiate between temporary surges and the new normal operational tempo, as continuous high-volume patching may become standard. This situation places extraordinary pressure on IT administrators and change management teams who must adapt to a sustained flood of KEV and EPSS notifications while maintaining infrast...

Malware#castlestealer#starland ratUnited States

A sophisticated Russian-speaking financially motivated adversary designated UAT-11795 has been conducting malicious operations targeting users in the United States and Europe since June 2025. The campaign delivers a Python-based remote access tool called Starland RAT and a PowerShell-based command-and-control memory implant known as the WLDR agent. The actor distributes trojanized installers disguised as legitimate software including MobaXterm, WebEx, Zoom, DBeaver, and FACEIT through likely ClickFix social engineering techniques. The operation targets victims' credentials and cryptocurrency wallet assets while establishing persistent connections for additional payload delivery. Alternative payloads include CastleStealer and Remcos RAT. The infrastructure utilizes distributed staging and C2 domains, Telegram bots for notifications, and a Polygon smart contract as a fallback mechanism for C2 domain resolution. The WLDR agent features encrypted beaconing, task queuing, and a Runspace execution engine for exe...

Malware#credential harvesting#trojanized installersUnited States+2