Apple has overnight released an update to XProtect Remediator security software for Catalina or later, bringing it to version 126.

Apple doesn’t release information about what security issues this update might add or change. This adds a new scanning module for Crapyrator, also known as BkDr.Activator, for which detection signatures have already been added to XProtect’s Yara definitions.

There are no changes to Bastion rules for the behavioural version of XProtect (Ventura and Sonoma only).

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, 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 this as a named update in SilentKnight, its label is XProtectPayloads_10_15-126.

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.