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North Korean-linked threat actor Famous Chollima has been using fake job interviews and skill assessments to infect cryptocurrency and Web3 professionals with the PylangGhost and GolangGhost remote access trojans. Researchers said the operation impersonates firms including Coinbase, Robinhood, Uniswap, Archblock, and Parallel Studios, with lures delivered through LinkedIn, Discord, Telegram, email, and fraudulent interview sites. Victims are told to fix supposed camera or microphone problems by copying and pasting malicious commands, a ClickFix/ClickFake technique that installs malware on Windows and macOS systems; recent reporting said Linux was not targeted in the latest wave.
The malware provides remote shell access, file transfer, system reconnaissance, persistence, and theft of browser credentials, cookies, and data from more than 80 browser extensions, including cryptocurrency wallets and password managers. Reporting indicates PylangGhost is a Python-based RAT functionally similar to GolangGhost, while GolangGhost on macOS can also deploy a SwiftUI credential harvester; both families use encrypted HTTP-based command-and-control communications. Investigators also described tailored fake assessment panels, invite-link validation, browser fingerprinting, mobile-device blocking, countdown timers, clipboard hijacking, and typosquatted infrastructure hosted largely through providers such as Hostinger and NameCheap, underscoring a financially motivated DPRK campaign aimed at stealing cryptocurrency and gaining access to company funds.
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On July 20, 2026, SOCRadar published an analysis of the ClickFake Interview campaign attributed to Famous Chollima, describing recruiter impersonation and fake interview workflows used to deploy PylangGhost on Windows and GolangGhost on macOS. The analysis also documented infrastructure patterns, browser fingerprinting, clipboard hijacking, and credential theft capabilities tied to the operation.
On June 18, 2025, Cisco Talos published a report detailing PylangGhost delivery via fake interview sites impersonating firms including Coinbase, Robinhood, Uniswap, Archblock, and Parallel Studios. The report included malware behavior, affected platforms, victimology, hashes, C2 infrastructure, download domains, fake interview domains, and ClamAV detections.
Cisco Talos reported that in May 2025 it identified PylangGhost, a Python-based remote access trojan used by the North Korean-aligned threat actor Famous Chollima/Wagemole. The malware was observed in fake job interview and skill-testing campaigns targeting cryptocurrency and blockchain 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
Researchers reported the **first confirmed appearance of the PylangGhost remote access trojan on the npm registry**, where it was hidden in two malicious JavaScript packages: `@jaime9008/math-service` and `react-refresh-update`. The activity has been linked to **FAMOUS CHOLLIMA**, a North Korean state-sponsored threat group previously associated with developer-focused social engineering and trojanized software campaigns. The packages were reportedly uploaded by the user `jaime9008`, tied to the email `jaimeandujo086[@]gmail.com`, and contained a PylangGhost loader embedded in files including `runtime.js`, `babel.js`, and `lib/lib.js`. The reported campaign used the hardcoded identifier **"ML2J"** and communicated with infrastructure including `malicanbur[.]pro` and `173.211.46[.]22:8080`. The reporting indicates the npm activity represents an escalation of software supply chain targeting aimed at developers and development pipelines, extending a malware family that had previously been disclosed by Cisco Talos and attributed to the same DPRK-linked actor. A social post amplifying the Kmsec finding is consistent with that same event, while separate posts about **Konni** spear-phishing and KakaoTalk-linked activity describe a different DPRK-related campaign and are not part of this incident.
Jun 29, 2026
A North Korea-aligned campaign tracked as **DeceptiveDevelopment** has used fake recruiter personas and trojanized coding challenges on GitHub, GitLab, and Bitbucket to compromise freelance software developers. Active since at least November 2023, the operation has particularly targeted developers working on cryptocurrency and decentralized-finance projects, with hundreds of victims identified globally across Windows, Linux, and macOS. Victims who run the malicious challenge receive the BeaverTail infostealer and downloader, followed by the Python-based InvisibleFerret backdoor. The malware steals cryptocurrency wallets, browser credentials, password-manager data, and other sensitive information; newer versions add Telegram exfiltration, selective clipboard theft, and keylogging, and can deploy AnyDesk for persistent remote access. The activity is linked to North Korean IT-worker and recruiter impersonation operations and overlaps with tactics associated with the Famous Chollima ecosystem and related DPRK campaigns.
Sep 9, 2026