Apple has just released its first update to XProtect for all versions of macOS since early June, bringing it to version 5351; the previous version was 5347. As usual it doesn’t release information about what security issues this update might address.

This version adds six new Yara rules for MACOS.ANGRYORB.OX, MACOS.BOATLOAD.STCRST, MACOS.BOATLOAD.PRIN, MACOS.BOATLOAD.PEME, MACOS.VSHELL.DITA and MACOS.VSHELL.DR, amends rules for MACOS.MISOMAGIC.PA, and tidies spacing for those for MACOS.SOMA.STTX. From the rules for Boatload, that would appear to be a stealer.

Osascript rules in XPScripts.yr gain no less than 14 new rules, and amend those for MACOS.OSASCRIPT.TIPA, MACOS.OSASCRIPT.SYPR, MACOS.OSASCRIPT.TADE and MACOS.OSASCRIPT.REOB.

You can check whether this update has been installed by opening System Information via About This Mac, and selecting the Installations item under Software.

A full listing of security data file versions is given by SilentKnight and SystHist for El Capitan to Golden Gate available from their product page. If your Mac hasn’t yet installed this update, you can force it using SilentKnight or at the command line.

If you want to install this as a named update in SilentKnight, its label is XProtectPlistConfigData_10_15-5351

Sequoia, Tahoe and Golden Gate systems only

This update has now been released for Sequoia and later via iCloud. If you want to check it manually, use the Terminal command
sudo xprotect check
then enter your admin password. If that returns version 5351 but your Mac still reports an older version is installed, you should be able to force the update using
sudo xprotect update