VirusBarrier is designed by Mac security experts, and it protects against a much wider variety of malware than Apple’s mitigation methods. Intego VirusBarrier X9, included with Intego’s Mac Premium Bundle X9, can protect against, detect, and eliminate SysJoker malware. Related: Do Macs need antivirus software? Thus, Apple’s own macOS protection methods are insufficient by themselves. Unfortunately, the threat mitigation features that Apple has built into macOS-such as notarization, Gatekeeper, XProtect, and MRT-do not block many types of threats. How can one remove or prevent SysJoker and other threats?
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Because it communicates with a command and control (C&C) server, it’s possible for the malware to receive additional instructions-and download additional components and upgrade its capabilities-at any time. The malware has methods of persistence, meaning it can continue to actively infect a computer after a reboot. However, the file is actually a universal Mach-O binary, meaning that it’s designed to infect Macs with either an Intel or Apple Silicon (e.g. The initial macOS SysJoker component is named types-config.ts, masquerading as either a TypeScript or MPEG transport stream video file. Thus its primary goal appears to be espionage, or in other words, spying on the victim. In reality, though, it has been observed to collect specific information about the infected computer, such as the MAC address, user name, and IP address.
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SysJoker pretends to be an operating system update mechanism. What does SysJoker do to an infected computer? Although the malware was discovered in December 2021, it may have been deployed sometime earlier in the second half of the year. How was SysJoker discovered?Īccording to Intezer, SysJoker “was first discovered during an active attack on a Linux-based web server of a leading educational institution.” Mac and Windows variants were found layer. Let’s examine this new threat and what makes it unique. Intego detects this malware’s various components as OSX/SysJoker.gen, OSX/SysJoker.lct, Linux/SysJoker.A, and Win32/SysJoker.A. But SysJoker is not just Mac malware-it’s cross-platform malware that can also infect PCs running Windows or Linux.
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SysJoker is one of the most recently discovered Mac malware families.