Change logs for security intelligence update version 1.443.142.0

This page lists newly added and updated threat detections included in security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware. If you don’t find the latest security intelligence update version in the selector below, please refresh this page or let us know us know through the feedback smiley.

Looking for the latest update? Download the latest update

Security intelligence update version

Released on

12/15/2025 9:55:39 PM

Added threat detections

Name	Severity
Trojan:JS/FakeUpdate.AC!MTB	severe
Trojan:JS/Redirector.ABW!MTB	severe
Trojan:MSIL/Dapato.AB!AMTB	severe
Trojan:MSIL/Taskun.AINB!MTB	severe
Trojan:PowerShell/GuLoader.PO!MTB	severe
Trojan:Win32/Posilod.AE	severe
Trojan:Win64/Rhadamanthys.NRI!MTB	severe
Trojan:Win64/ValleyRat.LO!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/AdLoad	high
Adware:Win32/Tnega	high
Backdoor:Linux/Dakkatoni.az!MTB	severe
Backdoor:MSIL/AsyncRat!rfn	severe
Backdoor:Win32/Androm.BQ!MTB	severe
Backdoor:Win32/Berbew.AA!MTB	severe
Backdoor:Win32/Padodor.SK!MTB	severe
Backdoor:Win32/Venik.QE!MTB	severe
Backdoor:Win64/Vankul!rfn	severe
Behavior:MacOS/OtterCookie.JS	severe
Behavior:MacOS/SuspAppDrop.V	severe
Behavior:Win32/SuspSafebootM.A	severe
Behavior:Win32/SuspSafebootN.A	severe
Behavior:Win32/WinUtilAbuse.D	severe
HackTool:MSIL/Lazy.MK!MTB	high
HackTool:PHP/Webshell!AMTB	high
HackTool:PowerShell/PowerView	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/Malgent!MSR	high
HackTool:Win32/Meterpreter!rfn	high
HackTool:Win64/CobaltStrike!rfn	high
HackTool:Win64/Crack!MTB	high
Ransom:Win32/ContiCrypt!rfn	severe
Ransom:Win32/Filecoder!rfn	severe
Ransom:Win32/Lynx!rfn	severe
Ransom:Win32/Qilinloader!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:Java/Adwind!rfn	severe
Trojan:JS/Redirector.QD	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MacOS/Amos!MTB	severe
Trojan:MSIL/Formbook!MTB	severe
Trojan:MSIL/Jalapeno.AJL!MTB	severe
Trojan:MSIL/Razy.PGRZ!MTB	severe
Trojan:PDF/Phish.A!AMTB	severe
Trojan:PowerShell/QakBot!rfn	severe
Trojan:VBS/Emotet!rfn	severe
Trojan:VBS/Malgent!rfn	severe
Trojan:VBS/Obfuse!rfn	severe
Trojan:Win32/Acll!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/AutoitInject!rfn	severe
Trojan:Win32/AutoitInject.AJ!MTB	severe
Trojan:Win32/AutoitInject.AR!MTB	severe
Trojan:Win32/Azorult!rfn	severe
Trojan:Win32/BlackMoon.NK!MTB	severe
Trojan:Win32/Blihan.MA!MTB	severe
Trojan:Win32/CardSpy.DA!MTB	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/Cerber!rfn	severe
Trojan:Win32/CobaltStrike!BV	severe
Trojan:Win32/CoreWarrior.DA!MTB	severe
Trojan:Win32/CryInfector.MBFH!MTB	severe
Trojan:Win32/CryptInject!MSR	severe
Trojan:Win32/DCRat.MX!MTB	severe
Trojan:Win32/DelfInject.ME!MTB	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Flystudio!MTB	severe
Trojan:Win32/Gcleaner.AGL!MTB	severe
Trojan:Win32/GenCodeInjected!BV	severe
Trojan:Win32/Glupteba!rfn	severe
Trojan:Win32/Ibashade.PA!MTB	severe
Trojan:Win32/IcedIdLNK!rfn	severe
Trojan:Win32/ICLoader!rfn	severe
Trojan:Win32/Injector.YTRE!MTB	severe
Trojan:Win32/Kazadm.A!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/LatenBot.EA!MTB	severe
Trojan:Win32/Lauri.ALI!MTB	severe
Trojan:Win32/Lazy!MTB	severe
Trojan:Win32/Lazy.ASBD!MTB	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/LummaStealer!MTB	severe
Trojan:Win32/LummaStealer.MBX!MTB	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!rfn	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/Neoreblamy!MTB	severe
Trojan:Win32/Neoreblamy.NIA!MTB	severe
Trojan:Win32/Neoreblamy.NJT!MTB	severe
Trojan:Win32/Neoreblamy.NRJ!MTB	severe
Trojan:Win32/OffLoader.AENB!MTB	severe
Trojan:Win32/Otfrem.A!MTB	severe
Trojan:Win32/Pasta!rfn	severe
Trojan:Win32/PlugX.psyP!MTB	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Predator!rfn	severe
Trojan:Win32/Ranumbot!rfn	severe
Trojan:Win32/Razy.ARZ!MTB	severe
Trojan:Win32/Salgorea.C!MTB	severe
Trojan:Win32/ScriptInZipExec!BV	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Sfuzuan.EN!MTB	severe
Trojan:Win32/ShellcodeRunner.LMC!MTB	severe
Trojan:Win32/SmokeLoader.FT!MTB	severe
Trojan:Win32/Socks!MTB	severe
Trojan:Win32/Stelac!rfn	severe
Trojan:Win32/StormAttack.A!MTB	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/SystemBC.psyW!MTB	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Trickbot!rfn	severe
Trojan:Win32/Vilsel.A!MTB	severe
Trojan:Win32/Vundo.AHC!MTB	severe
Trojan:Win32/Waski.A!MTB	severe
Trojan:Win32/WinLNKRun!rfn	severe
Trojan:Win32/Ymacco!rfn	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Zbot.GSH!MTB	severe
Trojan:Win32/Zbot.HBAI!MTB	severe
Trojan:Win32/Zbot.RPT!MTB	severe
Trojan:Win32/Zbot.SIBD14!MTB	severe
Trojan:Win32/Zbot.SP!MTB	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zpevdo.A	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win32/Zusy.BL!MTB	severe
Trojan:Win32/Zusy.HAK!MTB	severe
Trojan:Win32/Zusy.HBE!MTB	severe
Trojan:Win32/Zusy.LMV!MTB	severe
Trojan:Win32/Zusy.PGZY!MTB	severe
Trojan:Win32/Zusy.SQ!MTB	severe
Trojan:Win64/Cobaltstrike!rfn	severe
Trojan:Win64/Cobaltstrike.AG!MTB	severe
Trojan:Win64/CoinMiner!rfn	severe
Trojan:Win64/Corkow.EK!MTB	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/GravityRat.AGRV!MTB	severe
Trojan:Win64/Latrodectus!rfn	severe
Trojan:Win64/Meterpreter!rfn	severe
Trojan:Win64/Phorpiex!MTB	severe
Trojan:Win64/Rhadamanthys.RH!MTB	severe
Trojan:Win64/ShellcodeRunner!MTB	severe
Trojan:Win64/StealC.PGSD!MTB	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/Tedy.ATY!MTB	severe
Trojan:Win64/Tedy.PGT!MTB	severe
Trojan:Win64/Vidar!MTB	severe
Trojan:Win64/XmrigMiner.RP!MTB	severe
Trojan:Win64/Xworm.ZBO!MTB	severe
Trojan:Win64/Zusy!MTB	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:Win32/Fragtor.ARAZ!MTB	severe
TrojanDropper:Win32/Muldrop.V!MTB	severe
TrojanDropper:Win32/Salgorea.AI!MTB	severe
VirTool:Win32/Injector.FGT!MTB	severe
Worm:Win32/Brontok.MBQ!MTB	severe
Worm:Win32/Ganelp.AF!MTB	severe
Worm:Win32/Sfone.ECP!MTB	severe