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Microsoft Flags Ransomware Issues on Apple macOS Platform

By Ryan Naraine on January 09, 2023

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Safety researchers at Microsoft are flagging ransomware assaults on Apple’s flagship macOS platform, warning that financially motivated cybercriminals are abusing legit macOS functionalities to use vulnerabilities, evade defenses, or coerce customers to contaminate their units.

In a weblog publish documenting its analysis into 4 recognized macOS ransomware households, Microsoft’s Safety Menace Intelligence crew revealed IOCs and technical particulars to point out how ransomware actors goal customers on macOS-powered units.

“Whereas these malware households are outdated, they exemplify the vary of capabilities and malicious habits doable on the [Mac] platform,” Redmond mentioned, describing its work as a “technical reference” that researchers can use and construct upon to know Mac threats and enhance protections.

Whereas the vast majority of ransomware assaults goal Microsoft’s personal Home windows operation system, the corporate is utilizing the analysis to point out that the menace is cross-platform. “Attackers [are] consistently evolving their strategies and increasing their tradecraft to solid a wider web of potential targets. That is evident within the vary of industries, techniques, and platforms affected by ransomware assaults. Understanding how ransomware works throughout these techniques and platforms is crucial in defending immediately’s hybrid machine and work environments,” Microsoft mentioned.

[ Read: Microsoft Says Mac Trojan Becoming Stealthier, More Menacing ]

The analysis, which has been criticized by exterior researchers due to the supply of prior work, confirmed that the preliminary an infection vector of Mac ransomware usually depends on user-assisted strategies like downloading and operating faux or trojanized functions. 

Microsoft mentioned it additionally discovered that the malware may also arrive as a second-stage payload dropped or downloaded by different malware or a part of a provide chain assault. As soon as operating on a tool, ransomware assaults often comprise gaining entry, execution, encrypting goal customers’ recordsdata, and notifying the goal with a ransom message.

Microsoft mentioned its researchers checked out 4 macOS ransomware households — KeRanger, FileCoder, MacRansom, and EvilQuest — to construct detections for its personal anti-malware product and to know how ransomware assaults evolve on non-Home windows platforms.

This isn’t the primary time Microsoft has used its public weblog to shine a highlight on Apple’s safety hiccups. Lately, Redmond revealed particulars on a macOS Gatekeeper bypass vulnerability and known as consideration to a nasty macOS malware household that has developed rapidly from a fundamental information-gathering trojan to a stealthy backdoor with extra highly effective capabilities.

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