Change logs for security intelligence update version 1.443.225.0

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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.

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Security intelligence update version

Released on

12/20/2025 2:50:43 AM

Added threat detections

Name	Severity
Behavior:Win32/CVE-2025-20393.A!MTB	severe
Ransom:Win64/Cerber.ARAX!MTB	severe
Trojan:BAT/Qbot.SPH!MTB	severe
Trojan:JS/MassLogger.KJ!MTB	severe
Trojan:MSIL/AgenTesla.JGB!MTB	severe
Trojan:Win32/Seheq!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/AdLoad	high
Adware:Win32/Trickler.RT!MTB	high
Backdoor:MacOS/Mettle.A!MTB	severe
Backdoor:MSIL/AsyncRat!rfn	severe
Backdoor:MSIL/AsyncRat.AD!MTB	severe
Backdoor:MSIL/Bladabindi!rfn	severe
Backdoor:MSIL/Noancooe!rfn	severe
Backdoor:PHP/Dirtelti.MTG	severe
Backdoor:PHP/WebShell!MSR	severe
Backdoor:Win32/Androm.BQ!MTB	severe
Backdoor:Win32/Androm.MK!MTB	severe
Backdoor:Win32/Berbew.AA!MTB	severe
Backdoor:Win32/Padodor.SK!MTB	severe
BrowserModifier:Win32/SearchSettings	high
BrowserModifier:Win32/Shafmia	high
DoS:Win32/FiberLake!rfn	severe
Exploit:HTML/IframeRef	severe
Exploit:MacOS/JailBreak.AB!MTB	severe
Exploit:O97M/CVE-2018-0798!KZH	severe
Exploit:Ruby/JSShell.G!MSR	severe
Exploit:Win64/CVE-2022-3699.B!MSR	severe
HackTool:PowerShell/BloodHound.G!MSR	high
HackTool:PowerShell/PowerView	high
HackTool:PowerShell/PowerView!pz	high
HackTool:Python/Impacket	high
HackTool:Python/Impacket!MSR	high
HackTool:Win32/AutoKMS!MSR	high
HackTool:Win32/AutoKMS!MTB	high
HackTool:Win32/crack	high
HackTool:Win32/Crack!AMTB	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/GameHack!MTB	high
HackTool:Win32/Keygen	high
HackTool:Win32/Keygen!AMTB	high
HackTool:Win32/Keygen!MSR	high
HackTool:Win32/Keygen!MTB	high
HackTool:Win32/Passview!MTB	high
HackTool:Win32/Patcher!MTB	high
HackTool:Win32/Wirelesskeyview	high
HackTool:Win64/EDRSandBlast!rfn	high
HackTool:Win64/Mimikatz!rfn	high
Misleading:Win32/Lodi	high
Program:MacOS/Multiverze!rfn	high
PWS:Win32/Zbot.MR!MTB	severe
Ransom:Win32/BlackCat!rfn	severe
Ransom:Win32/Rapidstop!rfn	severe
Ransom:Win64/Lockbit!rfn	severe
Ransom:Win64/Ransomhub!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/KillAV!rfn	severe
Trojan:HTML/Malgent!MSR	severe
Trojan:HTML/Phish!MSR	severe
Trojan:JS/Cryxos.ATMB!MTB	severe
Trojan:JS/Iframe.CB	severe
Trojan:JS/Malgent!MSR	severe
Trojan:JS/Redirector.ARV	severe
Trojan:MSIL/AgentTesla!rfn	severe
Trojan:MSIL/Barys.AHB!MTB	severe
Trojan:MSIL/Barys.AR!MTB	severe
Trojan:MSIL/Malgent!MSR	severe
Trojan:MSIL/NjRat!rfn	severe
Trojan:MSIL/QuasarRat.ND!MTB	severe
Trojan:MSIL/Razy.PGRZ!MTB	severe
Trojan:PDF/Phish!rfn	severe
Trojan:Python/Malgent!MSR	severe
Trojan:Script/Malgent!MSR	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:VBS/Agent!AMTB	severe
Trojan:VBS/GuLoader!AMTB	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/Amadey.SPRI!MTB	severe
Trojan:Win32/CardSpy.DA!MTB	severe
Trojan:Win32/Convagent.MKA!MTB	severe
Trojan:Win32/CoreWarrior.DA!MTB	severe
Trojan:Win32/CryInfector.MBFH!MTB	severe
Trojan:Win32/CryptInject!rfn	severe
Trojan:Win32/DSSDetection	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Ekstak!rfn	severe
Trojan:Win32/Eqtonex!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Farfli.AHD!MTB	severe
Trojan:Win32/Fauppod!rfn	severe
Trojan:Win32/Fragtor.GKN!MTB	severe
Trojan:Win32/Fragtor.SXB!MTB	severe
Trojan:Win32/Gcleaner.AGL!MTB	severe
Trojan:Win32/GCleaner.WWF!MTB	severe
Trojan:Win32/Grandoreiro.psyS!MTB	severe
Trojan:Win32/GuLoader.RVS!MTB	severe
Trojan:Win32/HeavensGate!rfn	severe
Trojan:Win32/ICLoader!rfn	severe
Trojan:Win32/ICLoader.JL!MTB	severe
Trojan:Win32/Injector	severe
Trojan:Win32/InjectorCrypt!rfn	severe
Trojan:Win32/Ipatre.RPT!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/Lauri.ALI!MTB	severe
Trojan:Win32/Lazy.AHE!MTB	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malex!rfn	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Mamson.A!ac	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/Mikey!rfn	severe
Trojan:Win32/Neoreblamy.NRJ!MTB	severe
Trojan:Win32/Neoreblamy.NRL!MTB	severe
Trojan:Win32/NjRat.NEAA!MTB	severe
Trojan:Win32/Occamy.C13	severe
Trojan:Win32/Occamy.C40	severe
Trojan:Win32/Otfrem.A!MTB	severe
Trojan:Win32/Pikabot!rfn	severe
Trojan:Win32/PlugX.psyP!MTB	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Qakbot!rfn	severe
Trojan:Win32/QQPass.G!MTB	severe
Trojan:Win32/Salgorea.C!MTB	severe
Trojan:Win32/Salgorea.VRR!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Sfuzuan.EN!MTB	severe
Trojan:Win32/ShellCode!MSR	severe
Trojan:Win32/ShellcodeLoader.AHD!MTB	severe
Trojan:Win32/SmokeLoader.FT!MTB	severe
Trojan:Win32/StormAttack.A!MTB	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Swisyn.ADA!MTB	severe
Trojan:Win32/Swisyn.ASW!MTB	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Tiny.AB!MTB	severe
Trojan:Win32/Tnega!MSR	severe
Trojan:Win32/Trec!rfn	severe
Trojan:Win32/Upatre.AHD!MTB	severe
Trojan:Win32/Upatre.AMN!MTB	severe
Trojan:Win32/Upatre.AUP!MTB	severe
Trojan:Win32/VBClone.GTT!MTB	severe
Trojan:Win32/Vidar!MTB	severe
Trojan:Win32/Vilsel.A!MTB	severe
Trojan:Win32/Waski.AA!MTB	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Zbot.SP!MTB	severe
Trojan:Win32/Zbot.V!MTB	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win64/BlunderBlight!rfn	severe
Trojan:Win64/CobaltStrike.CG!MTB	severe
Trojan:Win64/CoinMiner!rfn	severe
Trojan:Win64/Donut!rfn	severe
Trojan:Win64/Emotetcrypt!rfn	severe
Trojan:Win64/Grandoreiro.psyP!MTB	severe
Trojan:Win64/GravityRat.AGRV!MTB	severe
Trojan:Win64/Gulpix.RPX!MTB	severe
Trojan:Win64/Injector	severe
Trojan:Win64/Injector.EO	severe
Trojan:Win64/Latrodectus!rfn	severe
Trojan:Win64/Lazy.MKG!MTB	severe
Trojan:Win64/Maloder!rfn	severe
Trojan:Win64/PackIcedID!rfn	severe
Trojan:Win64/Revsocks!rfn	severe
Trojan:Win64/ShellcodeRunner.NRG!MTB	severe
Trojan:Win64/SpyLoader!rfn	severe
Trojan:Win64/Tedy!rfn	severe
Trojan:Win64/Tedy.PGT!MTB	severe
Trojan:Win64/XmrigMiner.RP!MTB	severe
Trojan:Win64/Xworm.ZBO!MTB	severe
TrojanDownloader:JS/Emotet!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:PHP/Remoteshell.A	severe
TrojanDownloader:Win32/Agent!rfn	severe
TrojanDropper:Win32/Muldrop.V!MTB	severe
TrojanDropper:Win32/Salgorea.AI!MTB	severe
VirTool:Python/Empire.D!MTB	severe
VirTool:Win32/DrunzPkto.A!MTB	severe
VirTool:Win32/Inoculate.A	severe
Worm:Win32/Sfone.ECP!MTB	severe