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Friday, 19 February 2021 10:35

First native malware aimed at M1 Macs spotted by researcher

First native malware aimed at M1 Macs spotted by researcher Courtesy Apple

Hardly three months after a series of Mac computers, powered by new M1 chips, was launched, a security researcher has discovered malware written specifically for this platform.

Researcher Patrick Wardle said he had searched through the VirusTotal database and identified a macOS program that was written in native M1 code and was identified as malicious.

The M1 processor uses ARM- based architecture and thus apps developed for Mac have to be now translated through Apple's Rosetta 2 engine or else new native apps have to be created.

The application Wardle identified, called GoSearch22, is a variant of the Pirrit adware family that is a common threat targeting Mac users.

This app installs itself as a malicious extension for Safari where it persists as a launch agent.

The Slovakian security firm ESET said GoSearch22 had been submitted to VirusTotal at the end of December 2020, just a month after the Mac M1 launch.

“Rather awesomely, if we analyse details of the VirusTotal submission, it turns out this sample was submitted (by a user) directly through one of Objective-See’s tools (likely KnockKnock) …after the tool flagged the malicious code, due to its persistence mechanism,” Wardle said.

Objective See refers to Wardle's own site. He creates free security tools for OSX.

"This means that the malware has been detected in the wild and macOS users might have been infected," he said.

“...we confirmed that malicious adversaries are indeed crafting multi-architecture applications so that their code will natively run on M1 systems. The malicious GoSearch22 application may be the first example of such natively M1 compatible code,” he added.

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Sam Varghese

Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

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