Apple has just released an update to XProtect Remediator security software (Catalina or later), bringing it to version 122 (the previous released version was 120), and to XProtect (for all macOS from El Capitan or so) bringing it to version 2177.

Apple doesn’t release information about what security issues these updates might add or change.

However, XProtect’s Yara definitions add one new detection rule, for MACOS.SOMA.D, another variant of the SOMA family, and add rules for MACOS.PIRRIT.GEN, MACOS.ADLOAD.FMT and MACOS.ADLOAD.GEN, presumably to further improve detection of Pirrit and Adload.

XProtect Remediator adds a new scanning module for CardboardCutout. There are no changes in the Bastion rules for the behavioural version of XProtect (Ventura and Sonoma only).

You can check whether these updates have 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, LockRattler and SystHist for El Capitan to Sonoma available from their product page. If your Mac has not yet installed these updates, you can force them using SilentKnight, LockRattler, or at the command line.

If you want to install these as named updates in SilentKnight, their labels are XProtectPayloads_10_15-118 and XProtectPlistConfigData_10_15-2174.

I have updated the reference pages here which are accessed directly from LockRattler 4.2 and later using its Check blog button.

I maintain lists of the current versions of security data files for Sonoma on this page, Ventura on this page, Monterey on this page, Big Sur on this page, Catalina on this page, Mojave on this page, High Sierra on this page, Sierra on this page, and El Capitan on this page.