Apple has overnight released an update to XProtect Remediator security software (Catalina or later), bringing it to version 112, and to XProtect (for all macOS from El Capitan or so) bringing it to version 2172.

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.6319b53. Thanks to Stuart (see comment below) who identifies this as being Adload.

XProtect Remediator doesn’t add any more scanner modules. Bastion (for Ventura and Sonoma only) adds two more rules, 6 and 7, apparently aimed at reporting malicious behaviours of Adload, and named macOS.ADLOAD.NumericPath and macOS.ADLOAD.PersistenceSearch. There’s still no evidence that it does anything more than report rule-breaking, though.

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 Ventura 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_15-112 and XProtectPlistConfigData_10_15-2172.

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 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.