Rust Clipboard Hijacker Targets Windows and macOS Using Fake Reputation to Lure Crypto Users

· Original article ↗

Summary

Check Point researchers detail a campaign distributing Rust clipboard hijackers for Windows and macOS through fake crypto tools. The malware replaces copied wallet addresses, while manipulated engagement across platforms helps make downloads appear trustworthy.

Key points

  • A phishing site promotes fake crypto-trading and gambling tools, distributing malware through GitHub, SourceForge, and other channels.
  • The Rust malware monitors clipboard text for cryptocurrency wallet addresses and replaces matches with attacker-controlled addresses.
  • The Windows variant persists through a Startup-folder shortcut and embeds more than 15,500 wallet addresses.
  • The macOS variant uses instructions to remove quarantine attributes and bypass Gatekeeper warnings, then persists through a LaunchAgent and watchdog.
  • The actor allegedly inflated stars, downloads, views, comments, and VirusTotal benign votes to make the tools and samples seem legitimate.
  • Researchers observed more than 5,000 GitHub downloads; SourceForge showed 44,485 downloads, many anomalously attributed to Android devices.

Article Details

Attack Vectors
  • Social engineering promotes malicious Windows and macOS downloads through a phishing site, GitHub and SourceForge projects, YouTube videos, forum posts, and posts on news-oriented websites.
  • The downloaded applications act as loaders that execute Rust clipboard hijackers. The malware monitors clipboard contents for cryptocurrency wallet addresses and replaces matching text with attacker-controlled wallet addresses.
  • On Windows, the malware copies itself to %APPDATA%\silke\silke.exe and creates a shortcut in the Startup folder for persistence.
  • On macOS, an instructed shell script removes an application's quarantine attribute and opens it. The malware installs a LaunchAgent and a shell-script wrapper for persistence; a watchdog loop recreates these files and relaunches the binary.
Defensive Notes
  • The article reports coordinated fake engagement and benign votes or comments on VirusTotal, which can create a misleading impression of safety when detection rates are also low.
  • The macOS instructions encourage users to bypass Gatekeeper warnings by removing quarantine attributes before opening the application.

Indicators of compromise

TypeIndicatorContext
SHA25633c86ecfc324de3af97150bd009aba7925a6ba7a0842e127e94cf351013c0fe6Hash listed as a clipboard hijacking malware sample.
SHA2565518942d9d21794aaeff41a01b88606a96659fc329b481a2f0946d8163ab4d61Hash listed as a clipboard hijacking malware sample.
SHA2566f12c066a929c96104796c4ecca938754962009ebd9e4ba5329bb940bf331d0aHash listed as a macOS loader.
SHA2567a7ad4ae347a3f99f3773a113d9f70ecfa967100c96e8275bd1df833caee68d1Hash listed as a clipboard hijacking malware sample.
SHA2567a9632bbecc31d02fdd0eab07e2424b3e1c9e9a3f91aac4ef6f708f2befbaa3dHash listed as a .NET loader.
SHA2569c566db1ef9d08ee389d2b8cc1c50c65870096130c8bd2cf41ea14c4075e94c0Hash listed as a clipboard hijacking malware sample.
SHA256a91c09e0eea610dbe5879798f9cf12e3ce51e4e6f0893278bcdf3ebe22c4730bHash listed as a clipboard hijacking malware sample.
SHA256b71efdebd0ca3563e67edb7ad59358a6b8f013b219ad65033efcf48fd1c86619Hash listed as macOS clipboard hijacking malware.
SHA256bad8625087a7b9453c70933c0db32518ff5818e3d83f3a9e78d432a22b383edbHash listed as a clipboard hijacking malware sample.
SHA256c1435847b0c437f91efb07a3a35e4468036322d7acf4ba9e6d363cec0b481241Hash listed as a clipboard hijacking malware sample.
SHA256e02e60a23297692637b43ebcd7dbeb63af1e9680c551586a1ce935218e0034beHash listed as a clipboard hijacking malware sample.
SHA256ef9a915c8e1d484e52b3287c94a58ecd22c07391a87f9c136eabd8397ed01ca2Hash listed as a clipboard hijacking malware sample.
SHA256f737e99177cc05037ff34cf6e245dd56377dc3db4e2bb46edcf039df650939d6Hash listed as a .NET loader.
SHA256fb8294b12f904dff2ac79b51872be7bf09ab422cde223caaf4762eadf7e0760dHash listed as a clipboard hijacking malware sample.

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