North Korean hackers use novel Mac malware to target crypto wallets.

2 min read

North Korean Hackers Target Apple Devices in Crypto Heists

In a sophisticated cyberattack campaign, North Korean hackers are deploying new strains of malware targeting Apple devices, specifically aimed at compromising cryptocurrency projects. This development marks a significant shift in the cybersecurity landscape, as it challenges the long-held belief that Mac computers are less vulnerable to such exploits.

Exploiting Mac Vulnerabilities

Related: North Korean Cyber Threat Bypasses Apple's Security Measures

According to a recent report by Sentinel Labs, the attackers are leveraging a malware named “NimDoor” to infiltrate Mac computers. This malware is delivered through a deceptive social engineering tactic where hackers impersonate trusted contacts on messaging platforms like Telegram. Victims are lured into a fake Zoom meeting via a Google Meet link, which initiates the download of a malicious file disguised as a Zoom update.

Innovative Use of Nim Programming Language

The malware is written in Nim, an uncommon programming language that offers cybercriminals significant advantages. Nim’s ability to operate across Windows, Mac, and Linux platforms without modification makes it an attractive option for hackers aiming to maximize their reach. Furthermore, its fast compilation and standalone executable capabilities pose challenges for traditional security software, making detection difficult.

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Related: North Korean Cybercriminals Escalate Attacks on IT Firms via Sophisticated Social Engineering Tactics

Infostealer Payload and Broader Implications

Once installed, the malware deploys an infostealer payload designed to extract sensitive information, including browser passwords and crypto wallet credentials. It also targets Telegram’s encrypted local database, retrieving decryption keys to access further data. This methodical approach allows the malware to evade detection by security systems, as it activates only after a delay.

Cybersecurity firm Huntress has linked similar attacks to the North Korean state-sponsored group “BlueNoroff,” highlighting the persistent threat these actors pose to the crypto industry. The use of Nim further underscores the evolving tactics of these threat actors, who previously experimented with languages like Go and Rust.

Related: Telegram Verification Bots Used as Vehicles for Crypto-Stealing Malware

Heightened Threat to Mac Users

This campaign is part of a broader pattern of state-sponsored cyber threats targeting the cryptocurrency sector. As blockchain technology continues to grow, so does the interest of malicious actors in exploiting its vulnerabilities. The recent alerts from blockchain security firm SlowMist about fake Firefox extensions designed to steal crypto credentials further emphasize the need for heightened vigilance among users.

Sentinel Labs researchers conclude that the increasing sophistication of these attacks debunks the myth that Macs are immune to viruses. As the cybersecurity landscape evolves, both individuals and organizations must adopt robust security measures to protect their digital assets from such threats.

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