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A sophisticated social engineering campaign has been uncovered targeting Mac users through fake LinkedIn job offers, ultimately delivering the Flexible Ferret malware. Attackers, believed to be linked to North Korea, pose as recruiters and direct victims to a fraudulent job application website. During the application process, users are prompted to record a video introduction, but are told their camera or microphone access is blocked. To resolve this, they are instructed to run a curl command in Terminal, which downloads a malicious script disguised as an FFmpeg update. This script installs a backdoor, establishes persistence via a LaunchAgent, and uses a decoy Chrome-styled app to steal the user's password, which is then exfiltrated to Dropbox.
The Flexible Ferret malware chain has been updated to increase stealth and persistence, deploying a second-stage shell script that fetches additional payloads and executes them at login. The malware's capabilities include system data gathering, file uploads and downloads, Chrome profile data extraction, shell command execution, and automated credential theft. Security researchers emphasize the importance of treating unsolicited interview assessments and Terminal-based instructions as high-risk, urging organizations to educate users about these tactics to prevent compromise.
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5 events from the most recent confirmed update back to the earliest known activity.
Subsequent reporting highlighted that the same Contagious Interview operation also used related lures against Windows users with InvisibleFerret and emphasized the campaign's use of Dropbox for password theft and data exfiltration.
Jamf Threat Labs disclosed technical details of the updated malware chain, including hardcoded infrastructure, hashes, domains, IP addresses, and file paths, and warned organizations to treat unsolicited interview assessments and Terminal-based instructions as high risk.
Researchers found the latest macOS variant used JavaScript stagers, shell scripts, decoy Chrome permission prompts, persistence mechanisms, and deployment of a Go-based backdoor referred to as FlexibleFerret/CDrivers for credential theft, file exfiltration, and remote control.
In the campaign, victims were directed to domains such as evaluza[.]com and proficiencycert[.]com and instructed to run Terminal commands or install a fake FFmpeg update, triggering a multi-stage macOS infection chain.
Throughout 2025, DPRK-aligned operators continued the Contagious Interview social-engineering campaign, impersonating recruiters and using fake job assessments to target software developers, AI researchers, cryptocurrency professionals, and other job seekers.
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North Korean threat actors linked to **Contagious Interview**, **Famous Chollima**, and **Lazarus** used fake job and hiring platforms to infect applicants with BeaverTail, InvisibleFerret, FlexibleFerret, FrostyFerret, GolangGhost, and related malware families. Researchers said the operation evolved from earlier job-themed campaigns into **ClickFix**-style social engineering, where victims were told to copy and paste OS-specific troubleshooting commands from bogus interview sites. The infrastructure collected visitor IP and geolocation data, checked for cryptocurrency wallet browser objects, and then delivered tailored payloads for **Windows**, **macOS**, and **Linux** through staged download chains and fake recruiter workflows. The campaign expanded beyond software developers to target **cryptocurrency**, **marketing**, and other less technical roles, reflecting a broader DPRK shift toward centralized finance and job seekers who may be less suspicious of recruiter outreach. Reports tied the activity to malicious repositories, dozens of weaponized **npm** packages, fake hiring domains such as `businesshire[.]top`, and backend infrastructure including `nvidiasdk.fly[.]dev`, while analysts also documented persistence via Run keys and LaunchAgents, password theft on macOS, and malware loaders designed to frustrate analysis through allowlists and low-volume testing. Security firms assessed the activity as an ongoing evolution of the long-running Contagious Interview operation rather than isolated incidents.
Aug 15, 2026
A **ClickFix** social-engineering campaign is targeting macOS users with fake CAPTCHA or verification prompts that instruct victims to copy and paste commands into **Terminal**. The pasted command downloads a malicious `.dmg`, mounts it invisibly, and launches an app or installer that deploys **Atomic macOS Stealer** (`AMOS`). The activity relies on user manipulation rather than a software vulnerability, marking an expansion of ClickFix-style lures onto Apple systems. Once installed, `AMOS` steals browser credentials, cookies, payment data, files, Apple ecosystem data, messaging-app content, and cryptocurrency wallet information from targets including **Safari**, **Apple Notes**, **Apple Keychain**, **Telegram**, **Discord**, and wallet-related browser extensions. Reports say the malware can also show a fake macOS authentication prompt to gain elevated access, archive stolen data into a ZIP file, and exfiltrate it to attacker-controlled servers; in some cases it also replaces legitimate **Ledger Wallet** and **Trezor Suite** applications with trojanized versions to enable further theft.
Jul 30, 2026
Attackers are increasingly compromising macOS systems through **ClickFix** and related social-engineering lures that trick users into pasting malicious commands into Terminal, often behind fake Cloudflare checks, bogus troubleshooting steps, fraudulent support messages, or compromised websites. A large campaign tied to hundreds of hacked WordPress sites served platform-specific payloads and used the **Polygon** blockchain to hide command-and-control locations, while the macOS payload ran largely in memory, harvested Keychain data, browser information, SSH keys, screenshots, and other files, then staged stolen data in `/tmp/osalogging.zip` before exfiltrating it. Researchers said the technique does not rely on a macOS software flaw, but on convincing victims to execute attacker-supplied commands themselves. Threat reporting indicates the tactic has become a dominant initial-access method against Mac users, especially cryptocurrency holders and developers, and that recent Apple paste warnings in Terminal have already been bypassed through Script Editor abuse. Separate intrusion research linked cryptocurrency-focused activity to malware families including **DEEPBREATH**, **SUGARLOADER**, and **CHROMEPUSH**, showing how post-compromise tooling on macOS can escalate from social engineering to broad credential and data theft by targeting `TCC.db`, Keychain contents, Chromium-based browsers, Telegram data, and Apple Notes. Security teams are being urged to prioritize behavioral detection, cross-platform response, and user controls that prevent unverified command execution on Macs.
Jul 16, 2026