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Atomic Stealer macOS Script Editor ClickFix campaign

Campaign
First reported
Last updated
Happening score
H score 47
2 unique sources, 2 articles

Summary

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A new Atomic Stealer (AMOS) campaign is targeting macOS users through fake Apple-themed cleanup sites, creating a lower-friction path to malware installation and data theft. The lure uses an applescript:// link to open Script Editor with prefilled code, shifting the ClickFix-style trick away from a manual Terminal prompt. The chain runs an obfuscated `curl | zsh` command, drops `/tmp/helper`, and executes the final Mach-O payload. AMOS can steal Keychain data, browser passwords, cookies, credit cards, and crypto-wallet information, which makes the operation high-risk for Mac users.

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Atomic Stealer (AMOS) macOS ClickFix Script Editor activity

Malware Activity
First: 09.04.2026 14:20 Last: 09.04.2026 14:20 Sources 1

How related: A malware campaign which targets macOS systems, distributed using a ClickFix attack, has evolved to exploit Script Editor as the execution vector rather than the typical Terminal-based point of execution.

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Malware Activity
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Security Tool/Service
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Timeline

  1. 08.04.2026 21:55 2 articles · 1mo ago

    Jamf reports Atomic Stealer campaign against macOS users

    Initial Disclosure

    Researchers at Jamf reported a new Atomic Stealer (AMOS) campaign targeting macOS users with fake Apple-themed cleanup sites that use the applescript:// URL scheme to open Script Editor with pre-filled code. The execution chain runs an obfuscated `curl | zsh` command, decodes a base64 + gzip payload, writes `/tmp/helper`, removes security attributes with `xattr -c`, and executes a Mach-O binary identified as Atomic Stealer (AMOS), which targets Keychain data, browser autofill data, passwords, cookies, stored credit cards, and system information.

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