I am grateful to Phil Stokes at Sentinel Labs for decoding of the obfuscated malware names here, and to Stuart Ashenbrenner at Jamf for identifying the new addition. I maintain lists of the current versions of security data files for 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.
I have updated the reference pages here which are accessed directly from LockRattler 4.2 and later using its Check blog button. If your Mac has not yet installed this update, you can force an update using SilentKnight, LockRattler, or at the command line.
You can check whether this update has been installed by opening System Information via About This Mac, and selecting the Installations item under Software.Ī full listing of security data file versions is given by SilentKnight, LockRattler and SystHist for El Capitan, Sierra, High Sierra, Mojave, Catalina and Big Sur, available from their product page. These are the first security data updates since 28 June 2021.Īpple doesn’t release information about what these updates add or change, and obfuscates the identities of malware detected by XProtect using internal code names.Ĭhanges found in the XProtect Yara definitions include the addition of one new signature for MACOS.7c241b4 (Adload/Climpi), replacement of MACOS.ef3df25 (Bundlore script) with MACOS.f5d33c9, replacement of MACOS.a9ea9b4 (Bundlore) with MACOS.8a20735 and changes in their signatures, and changes to the signature of MACOS.2afe6bd (Adload). Apple has just pushed two updates, to the data files used by XProtect, bringing its version number to 2150 dated 23 August 2021, and to its malware removal tool MRT, bringing it to version 1.82, also dated 23 August 2021.
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