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GPUGate Malware Campaign Targets IT Firms in Western Europe

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Last updated
3 unique sources, 6 articles

Summary

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A sophisticated malware campaign, codenamed GPUGate, targets IT and software development companies in Western Europe, with recent expansions to macOS users. The campaign leverages Google Ads, SEO poisoning, and fake GitHub commits to deliver malware, including the Atomic macOS Stealer (AMOS) and Odyssey. The attack began in December 2024 and uses a 128 MB Microsoft Software Installer (MSI) to evade detection. The malware employs GPU-gated decryption and various techniques to avoid analysis and detection. The end goal is information theft and delivery of secondary payloads. The threat actors have native Russian language proficiency and use a cross-platform approach. The campaign has expanded to target macOS users through fake Homebrew, LogMeIn, and TradingView platforms. These platforms impersonate popular tools and use SEO poisoning to distribute the Atomic Stealer malware and Odyssey. The threat actors use multiple GitHub usernames to evade takedowns and deploy malware via Terminal commands. Similar tactics have been observed in previous campaigns using malicious Google Ads and public GitHub repositories. The AMOS malware now includes a backdoor component for persistent, stealthy access to compromised systems. The campaign impersonates over 100 software solutions, including 1Password, Dropbox, Confluence, Robinhood, Fidelity, Notion, Gemini, Audacity, Adobe After Effects, Thunderbird, and SentinelOne. The fake GitHub pages were created on September 16, 2025, and were immediately submitted for takedown. The campaign has been active since at least April 2023, with previous similar campaigns observed in July 2025. A new AMOS infostealer campaign abuses Google search ads to lure users into Grok and ChatGPT conversations that lead to installing the AMOS malware on macOS. The campaign was first spotted by researchers at Kaspersky, with a more detailed report by Huntress. The ClickFix attack begins with victims searching for macOS-related terms, leading to malicious instructions in AI chats. The malicious instructions are hosted on legitimate LLM platforms and contain commands to install the malware. The base64-encoded URL decodes into a bash script that loads a fake password prompt dialog. The script validates, stores, and uses the provided password to execute privileged commands, including downloading and executing the AMOS infostealer. AMOS was first documented in April 2023 and is a malware-as-a-service (MaaS) operation targeting macOS systems exclusively. AMOS added a backdoor module earlier this year, allowing operators to execute commands, log keystrokes, and drop additional payloads. AMOS is dropped as a hidden file and scans for cryptocurrency wallets, browser data, macOS Keychain data, and files on the filesystem. Persistence is achieved via a LaunchDaemon running a hidden AppleScript that restarts the malware if terminated. Users are advised to be vigilant and avoid executing commands they found online, especially if they don't fully understand what they do. Kaspersky noted that asking ChatGPT if the provided instructions are safe reveals they are not.

Timeline

  1. 18.10.2025 18:02 1 articles · 1mo ago

    New malware payloads AMOS and Odyssey target macOS developers

    The campaign targets macOS developers with fake Homebrew, LogMeIn, and TradingView platforms. The campaign employs 'ClickFix' techniques to trick targets into executing commands in Terminal. The campaign uses Google Ads to drive traffic to malicious sites and promote them in Google Search results. The malicious sites feature convincing download portals for fake apps and instruct users to copy a curl command in their Terminal to install them. The commands fetch and decode an 'install.sh' file, which downloads a payload binary, removing quarantine flags and bypassing Gatekeeper prompts. The payload is either AMOS or Odyssey, executed on the machine after checking if the environment is a virtual machine or an analysis system. The malware invokes sudo to run commands as root and collects detailed hardware and memory information of the host. The malware manipulates system services like killing OneDrive updater daemons and interacts with macOS XPC services to blend its malicious activity with legitimate processes. The malware harvests sensitive information stored on the browser, cryptocurrency credentials, and exfiltrates to the command and control (C2).

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  2. 22.09.2025 22:44 1 articles · 2mo ago

    Threat actors view Mac users as low-hanging fruit

    The threat actors may view Mac users as a low-hanging fruit due to the perception that Macs face fewer malware threats. The campaign has been active since at least April 2023, with previous similar campaigns observed in July 2025.

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  3. 22.09.2025 18:36 1 articles · 2mo ago

    AMOS malware adds backdoor for persistent access

    The Atomic (AMOS) malware now includes a backdoor component, giving attackers persistent, stealthy access to compromised systems. The AMOS malware is a malware-as-a-service operation available for $1,000/month.

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  4. 20.09.2025 10:07 3 articles · 2mo ago

    GPUGate campaign expands to macOS users through fake GitHub repositories

    The fake GitHub pages were created on September 16, 2025, and were immediately submitted for takedown. The campaign uses SEO poisoning to ensure the fake repositories are positioned well in search results. The campaign has been active since at least April 2023, with previous similar campaigns observed in July 2025. The campaign now targets macOS developers with fake Homebrew, LogMeIn, and TradingView platforms.

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  5. 08.09.2025 18:02 6 articles · 3mo ago

    GPUGate Malware Campaign Targets IT Firms in Western Europe

    The campaign has targeted a range of companies across the technology and financial sectors, including LastPass. The fake GitHub pages were created on September 16, 2025, and were immediately submitted for takedown. The campaign uses SEO poisoning to ensure the fake repositories are positioned well in search results. The campaign has been active since at least April 2023, with previous similar campaigns observed in July 2025. The campaign now targets macOS developers with fake Homebrew, LogMeIn, and TradingView platforms. A new AMOS infostealer campaign abuses Google search ads to lure users into Grok and ChatGPT conversations that lead to installing the AMOS malware on macOS. The campaign was first spotted by researchers at Kaspersky, with a more detailed report by Huntress. The ClickFix attack begins with victims searching for macOS-related terms, leading to malicious instructions in AI chats. The malicious instructions are hosted on legitimate LLM platforms and contain commands to install the malware. The base64-encoded URL decodes into a bash script that loads a fake password prompt dialog. The script validates, stores, and uses the provided password to execute privileged commands, including downloading and executing the AMOS infostealer. AMOS was first documented in April 2023 and is a malware-as-a-service (MaaS) operation targeting macOS systems exclusively. AMOS added a backdoor module earlier this year, allowing operators to execute commands, log keystrokes, and drop additional payloads. AMOS is dropped as a hidden file and scans for cryptocurrency wallets, browser data, macOS Keychain data, and files on the filesystem. Persistence is achieved via a LaunchDaemon running a hidden AppleScript that restarts the malware if terminated. Users are advised to be vigilant and avoid executing commands they found online, especially if they don't fully understand what they do. Kaspersky noted that asking ChatGPT if the provided instructions are safe reveals they are not.

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