Palo Alto Networks Unit 42 has documented FlutterShell, a Flutter-built macOS backdoor distributed through malicious Google and YouTube ads served by a network of Google-verified shell companies. It is the latest stage of the CL-CRI-1089 cluster and part of the broader TamperedChef / EvilAI campaigns that push trojanized productivity software. The ads lure macOS users in the US, Canada, Australia, France, and Germany into installing fake desktop apps. Beyond adware, FlutterShell supports arbitrary shell-command execution, file-system manipulation, and environment-variable exfiltration, and on launch modifies Chrome config files to force browser traffic through an attacker-controlled intermediary. Activity was seen as recently as March 2026.
Wiz has documented JINX-0164, a previously undocumented financially-motivated threat actor targeting cryptocurrency firms via recruitment-themed social engineering and bespoke macOS malware since at least mid-2025. The chain starts with credible LinkedIn profiles offering virtual meetings; victims are steered to a rogue teleconference page that delivers a malicious 'meeting client.' A bash script then pulls AUDIOFIX, a Python-based macOS infostealer and RAT, from apple.driver-store[.]com. The payload is architecture-aware (Intel and Apple Silicon), saved as ChromeUpdater, masquerades as the system audio daemon coreaudiod, and persists via launchctl. AUDIOFIX moves laterally from developer laptops into code-distribution and CI/CD infrastructure, modifying source code to steal wallets at scale.
FBI Director Kash Patel's merchandise website basedapparel[.]com was taken offline on Friday after researchers documented a multi-stage WooCommerce compromise that stole payment data and targeted Mac users with a ClickFix attack. The site displayed a fake Cloudflare CAPTCHA prompting visitors to paste a command into their terminal; the macOS-specific shell command then downloaded a script-based infostealer that targets browsers, password vaults, and cryptocurrency wallets before compressing the data, exfiltrating to monterushy[.]com, and deleting itself. Researchers WifiRumHam and 'debbie' analyzed the live campaign on May 21-22; the site went offline on May 22. Similar infections seen across many compromised WooCommerce sites.
SentinelOne has documented a new variant of the SHub macOS infostealer family called Reaper. Victims are lured through fake WeChat and Miro installers hosted on typo-squatted Microsoft domains, then prompted to run what looks like an Apple security update. Reaper avoids macOS Tahoe's new Terminal protections by routing its commands through the applescript:// URL scheme. Once running, it steals browser credentials, crypto wallets, dev configs, iCloud data, and Telegram sessions, replaces legitimate Exodus, Ledger, and Trezor wallet apps with backdoored copies, and installs a persistent fake Google Software Update LaunchAgent that gives the attacker an ongoing remote shell. Files larger than 85MB are uploaded in 70MB chunks.
Broadcom released a security update for VMware Fusion to fix CVE-2026-41702, a high-severity local privilege escalation that lets any non-administrative user on a Mac running Fusion become root on the host. The flaw is a time-of-check time-of-use race condition inside a SETUID binary used by Fusion - the kind of bug that turns a foothold on a developer workstation into full host control. Researcher Mathieu Farrell reported it privately. Broadcom rated the issue 'important' (CVSSv3 7.8). The advisory landed the same week as Pwn2Own Berlin, where VMware ESXi exploits can earn participants up to 200,000 dollars - Broadcom is on-site.
Hackers are buying Google ads that look like they go to claude.ai - and they do go to a real claude.ai page. But the page is a shared Claude chat dressed up as 'Apple Support' walking users through installing Claude on a Mac. The instructions tell people to paste a command into Terminal that quietly downloads MacSync, a Mac infostealer that grabs saved browser passwords, cookies, and contents of macOS Keychain (where Mac stores logins and keys). Because both the ad and the page are real claude.ai links, there is no fake domain to spot. Researcher Berk Albayrak first reported the campaign; BleepingComputer found a second active variant.
ANY.RUN and Dark Reading published research on Mach-O Man, a new macOS malware kit Lazarus is deploying against fintech and crypto executives. The chain begins on Telegram with what looks like a legitimate meeting invite from a known contact, leading to a fake Zoom/Teams/Meet page that displays a fake 'connection issue' and instructs the executive to copy-paste a command into Mac Terminal. That ClickFix command grabs credentials, browser sessions, and Keychain data and exfiltrates over Telegram bot APIs. Lazarus has used the same template across the Drift and KelpDAO compromises, totaling more than $500M stolen in two weeks.
Apple shipped an undocumented security feature in macOS Tahoe 26.4 that directly targets ClickFix attacks - the social engineering technique behind the Infinity Stealer campaign we covered last week. When a user tries to paste a potentially harmful command into Terminal, macOS now intercepts it with a warning before anything executes. The feature only covers Apple's built-in Terminal app, not third-party alternatives like iTerm2. A 'Paste Anyway' option remains for power users.
A new macOS infostealer called Infinity Stealer tricks users through fake Cloudflare CAPTCHA pages - a technique called ClickFix. Victims paste a command into Terminal thinking they're verifying their identity, but it silently installs malware. The payload is compiled with Nuitka - turning Python into native macOS binaries that are much harder for security tools to detect. It steals browser credentials, Keychain data, and crypto wallets.
TrustStrike Labs