Beware of MacStealer: A New Malware Targeting macOS Catalina Devices

MacStealer steals extensive data from a targeted device, including personal data, iCloud Keychain data, images, passwords, and credit card details.

If your device runs on macOS Catalina, be cautious because a new malware has surfaced dubbed MacStealer, which mainly targets Catalina-running Mac devices and infects both Apple Silicon and Intel chips.

MacStealer steals a wide range of user data

Security researchers at Uptycs discovered MacStealer and observed that it steals extensive data from the device, including personal data, iCloud Keychain data, images, passwords, and credit card details.

Furthermore, the malware can steal browser cookies, documents, and login details from the targeted Mac. It works specifically on MacOS Catalina-based Macs. The malware steals cookies and credentials from Google Chrome, Firefox, and Brave browsers along with extracting the Keychain database.

Moreover, it can obtain several file types, such as text files, MP3s, photographs, PowerPoint files, and databases.

How Does the Attack Take Place?

The attack starts by taking the Keychain wholesale without accessing its data. The stolen database is transmitted to the attacker via Telegram in encrypted form. A separate ZIP folder is also shared with the attacker through a Telegram bot.

The malware developer, who is selling access to MacStealer for $100 per build, claims that the extracted Keychain cannot be accessed without the master password.

The developer has provided a list of upcoming features of MacStealer, which includes stealing funds from cryptocurrency wallets, a dedicated tool for creating new builds, a custom uploader, a reverse shell, and a control panel. The upcoming versions may also feature the capability to steal data from the Safari browser and Apple Notes.

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