Change logs for security intelligence update version 1.443.43.0

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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

12/11/2025 5:03:04 PM

Added threat detections

Name	Severity
DoS:Win32/SynFlood!rfn	severe
PWS:Win64/Vidar.STA!MTB	severe
Trojan:BAT/Runner.C!AMTB	severe
Trojan:BAT/ValleyRat!AMTB	severe
Trojan:HTML/Phish.O!AMTB	severe
Trojan:HTML/Redirector.POJ!MTB	severe
Trojan:JS/Cyrxos.A!AMTB	severe
Trojan:MSIL/Crysan.PGZ!MTB	severe
Trojan:MSIL/DarkCloud.RV!MTB	severe
Trojan:MSIL/KillMBR.ZEI!MTB	severe
Trojan:MSIL/Rozena.GPAR!MTB	severe
Trojan:PowerShell/AsyncRAT.MP!MSR	severe
Trojan:VBS/SnakeKeylogger.P!MTB	severe
Trojan:Win32/AgenTesla.SA!MTB	severe
Trojan:Win32/Amadey.GAPD!MTB	severe
Trojan:Win32/Amadey.GAPE!MTB	severe
Trojan:Win32/Misleading!AMTB	severe
Trojan:Win32/Neoreblamy.NRI!MTB	severe
Trojan:Win32/WinLNK.SPYT!MTB	severe
Trojan:Win64/Barys.SPAT!MTB	severe
Trojan:Win64/Barys.SPTY!MTB	severe
Trojan:Win64/CobaltStrike.GKZ!MTB	severe
Trojan:Win64/Kryptic!MTB	severe
Trojan:Win64/MuddyWater.GVE!MTB	severe
Trojan:Win64/ShellcodeRunner.NRE!MTB	severe
TrojanDownloader:VBS/StealC.CLD!MTB	severe
TrojanDownloader:Win32/ValleyRat.FG!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/Tnega	high
Backdoor:Linux/Dakkatoni.az!MTB	severe
Backdoor:MSIL/AsyncRat!rfn	severe
Backdoor:MSIL/Bladabindi!rfn	severe
Backdoor:MSIL/XWormRAT!rfn	severe
Backdoor:PHP/Chopper.C!dha	severe
Backdoor:Win32/Aicat.A!ml	severe
Backdoor:Win32/Androm.BQ!MTB	severe
Backdoor:Win32/Berbew.AA!MTB	severe
Backdoor:Win32/Fynloski!rfn	severe
Backdoor:Win32/IRCbot!rfn	severe
Backdoor:Win32/Padodor.SK!MTB	severe
Backdoor:Win32/Rifdoor.GFM!MTB	severe
Backdoor:Win32/Simda.CCJE!MTB	severe
Backdoor:Win64/PortStarter!rfn	severe
Backdoor:Win64/Vankul!rfn	severe
Behavior:MacOS/SuspiciousAppModification.EZ	severe
Behavior:MacOS/SuspiciousPerlRevShell.A2	severe
Behavior:MacOS/SuspiciousProcExec.AD	severe
Behavior:MacOS/SuspiciousPythonRevShell.A1	severe
Behavior:MacOS/SuspiciousPythonRevShell.A11	severe
Behavior:MacOS/SuspiciousPythonShell.A5	severe
Behavior:MacOS/SuspiciousRubyRevShell.A2	severe
Behavior:MacOS/SuspKeyChainAccess.A7	severe
Behavior:MacOS/SuspKeyChainCopy.AB	severe
Behavior:MacOS/SuspKeyChainGrab.AB	severe
Behavior:MacOS/SuspKeyChainUnlock.AB	severe
Behavior:MacOS/SuspPassCapture.AB	severe
Behavior:MacOS/SuspRevShellDownload.Z1	severe
Behavior:MacOS/SuspXcssetBehavior.AT	severe
Behavior:MacOS/SuspXcssetBehavior.AU	severe
Behavior:Win32/CosmicPulse.A!dha	severe
Behavior:Win64/BlipSide.AA!sms	severe
Exploit:HTML/Shellcode.G!MSR	severe
Exploit:Java/CVE-2012-1723	severe
Exploit:JS/ShellCode.gen	severe
Exploit:O97M/CVE-2025-53770.DA!ams	severe
Exploit:Ruby/JSShell.G!MSR	severe
Exploit:Win32/CVE-2008-2992!AMTB	severe
HackTool:BAT/AutoKms.S!MTB	high
HackTool:MSIL/AutoKms	high
HackTool:PowerShell/BloodHound	high
HackTool:Python/Impacket!AMTB	high
HackTool:Python/Impacket!MSR	high
HackTool:Python/Impacket.AAI!MSR	high
HackTool:Win32/AutoKMS	high
HackTool:Win32/AutoKMS!MTB	high
HackTool:Win32/AutoKMS!rfn	high
HackTool:Win32/CheatEngine	high
HackTool:Win32/crack	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/Daoak.A	high
HackTool:Win32/DongleHack	high
HackTool:Win32/Keygen	high
HackTool:Win32/Keygen!AMTB	high
HackTool:Win32/Keygen!MTB	high
HackTool:Win32/Mimikatz.AA!MTB	high
HackTool:Win32/Patcher	high
HackTool:Win32/Patcher!MTB	high
HackTool:Win32/PowersploitHijack.A!dll	high
HackTool:Win32/WNetWatcher!MTB	high
HackTool:Win64/CobaltStrike!rfn	high
HackTool:Win64/Gamehack!MTB	high
HackTool:Win64/Juicypotato!rfn	high
HackTool:Win64/Patcher!MSR	high
Ransom:BAT/DisableDefender.A!dha	severe
Ransom:Linux/BlackSuit!rfn	severe
Ransom:Linux/LockBit.B!MTB	severe
Ransom:PowerShell/Roduk	severe
Ransom:Win32/BlackCat!rfn	severe
Ransom:Win32/Clop!rfn	severe
Ransom:Win32/ContiCrypt!rfn	severe
Ransom:Win32/MedusaLocker!rfn	severe
Ransom:Win32/Qilinloader!rfn	severe
Ransom:Win64/Magniber!rfn	severe
Ransom:Win64/Ryuk!rfn	severe
Tool:Linux/Multiverze!rfn	moderate
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:AndroidOS/Multiverze!rfn	severe
Trojan:BAT/Boxter.BF!MTB	severe
Trojan:BAT/LNK_DarkGate!rfn	severe
Trojan:BAT/Qakbot!rfn	severe
Trojan:HTML/IcedID!rfn	severe
Trojan:HTML/Obfuse!rfn	severe
Trojan:HTML/Phish!MSR	severe
Trojan:HTML/Phish.KR!MSR	severe
Trojan:HTML/Phish.MIO!MTB	severe
Trojan:HTML/Qakbot!rfn	severe
Trojan:HTML/Redirector.SLWZ!MTB	severe
Trojan:HTML/SpamLeonem!rfn	severe
Trojan:JS/Agent	severe
Trojan:JS/AgentTesla!rfn	severe
Trojan:JS/FakeUpdate.AB!MTB	severe
Trojan:JS/FSAutcik	severe
Trojan:JS/Malgent!MSR	severe
Trojan:JS/QakbotLNK!rfn	severe
Trojan:JS/Redirector.ATKB!MTB	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MSIL/Agent!AMTB	severe
Trojan:MSIL/AgentTesla!rfn	severe
Trojan:MSIL/AgentTesla.DW!MTB	severe
Trojan:MSIL/AmsiBypass!rfn	severe
Trojan:MSIL/CryptInject!rfn	severe
Trojan:MSIL/FormBook!rfn	severe
Trojan:MSIL/Jalapeno.SLWG!MTB	severe
Trojan:MSIL/Lazy!rfn	severe
Trojan:MSIL/Perseus!rfn	severe
Trojan:MSIL/Polazert!rfn	severe
Trojan:MSIL/Redline.MVC!MTB	severe
Trojan:MSIL/RedlineStealer!AMTB	severe
Trojan:MSIL/Rozena.GPAT!MTB	severe
Trojan:MSIL/Samas!rfn	severe
Trojan:MSIL/Tedy!rfn	severe
Trojan:MSIL/XWorm.NBK!MTB	severe
Trojan:O97M/DDownloader!rfn	severe
Trojan:O97M/Phish!MSR	severe
Trojan:PowerShell/Fleisnam.E!MTB	severe
Trojan:PowerShell/Malgent!MSR	severe
Trojan:PowerShell/QakBot!rfn	severe
Trojan:Script/Malgent!MSR	severe
Trojan:Script/Metasploit!MSR	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:Script/Obfuse	severe
Trojan:Script/Phonzy	severe
Trojan:VBS/Emotet!rfn	severe
Trojan:VBS/GuLoader!AMTB	severe
Trojan:VBS/Malgent!MSR	severe
Trojan:VBS/Obfuse!rfn	severe
Trojan:VBS/Pterodo!rfn	severe
Trojan:VBS/Qakbot!rfn	severe
Trojan:Win32/Acll!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/AresLdrCrypt!rfn	severe
Trojan:Win32/AutoitInject!MTB	severe
Trojan:Win32/AutoitInject.AJ!MTB	severe
Trojan:Win32/AutoitInject.AR!MTB	severe
Trojan:Win32/AutoitInject.C!MTB	severe
Trojan:Win32/Bluteal!rfn	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/Convagent!rfn	severe
Trojan:Win32/Copak.PGCP!MTB	severe
Trojan:Win32/CoreWarrior.DA!MTB	severe
Trojan:Win32/CryInfector.MBFH!MTB	severe
Trojan:Win32/CryptInject	severe
Trojan:Win32/CryptInject!rfn	severe
Trojan:Win32/Cryware!rfn	severe
Trojan:Win32/DarkGate!rfn	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Dynamer!ac	severe
Trojan:Win32/Dynamer!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Emotet.KDS!MTB	severe
Trojan:Win32/Emotet.UT!MTB	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/EyeStye.AEYE!MTB	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Fauppod!rfn	severe
Trojan:Win32/FileCoder!rfn	severe
Trojan:Win32/Generic!rfn	severe
Trojan:Win32/GhostSocks!rfn	severe
Trojan:Win32/Grandoreiro!rfn	severe
Trojan:Win32/GULoader!MTB	severe
Trojan:Win32/Guloader.RR!MTB	severe
Trojan:Win32/GuLoader.RVT!MTB	severe
Trojan:Win32/IcedIdLNK!rfn	severe
Trojan:Win32/ICLoader!rfn	severe
Trojan:Win32/Injector.RAQ!MTB	severe
Trojan:Win32/Injector.YTRE!MTB	severe
Trojan:Win32/Jaik!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/LatenBot.EA!MTB	severe
Trojan:Win32/Lazy!rfn	severe
Trojan:Win32/Lazy.AHE!MTB	severe
Trojan:Win32/Lazy.ASBD!MTB	severe
Trojan:Win32/Leonem	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgen!MSR	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!AMTB	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/Masqrazelf!rfn	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/NSISInject!MTB	severe
Trojan:Win32/Occamy.C8C	severe
Trojan:Win32/Otfrem.A!MTB	severe
Trojan:Win32/Pasta!rfn	severe
Trojan:Win32/Penguish!rfn	severe
Trojan:Win32/PhishLeonem!rfn	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Primarypass!rfn	severe
Trojan:Win32/Qakbot!rfn	severe
Trojan:Win32/QQPass.G!MTB	severe
Trojan:Win32/Rugmi	severe
Trojan:Win32/Runner.HB!MTB	severe
Trojan:Win32/Salgorea.C!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/ShellcodeRunner.LMC!MTB	severe
Trojan:Win32/Skeeyah.A!MTB	severe
Trojan:Win32/SmokeLoader.FT!MTB	severe
Trojan:Win32/Socgolsh!BV	severe
Trojan:Win32/Staser.ARA!MTB	severe
Trojan:Win32/StormAttack.A!MTB	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/VBClone.GTT!MTB	severe
Trojan:Win32/Vilsel.A!MTB	severe
Trojan:Win32/Waski.AA!MTB	severe
Trojan:Win32/WinLNK!rfn	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Zbot.HBAI!MTB	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy.BL!MTB	severe
Trojan:Win32/Zusy.LMV!MTB	severe
Trojan:Win32/Zusy.MRA!MTB	severe
Trojan:Win64/AsyncRat!rfn	severe
Trojan:Win64/Cobaltstrike!rfn	severe
Trojan:Win64/Cobaltstrike.AG!MTB	severe
Trojan:Win64/Cobaltstrike.DD!MTB	severe
Trojan:Win64/CoinMiner!rfn	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/Emotetcrypt!rfn	severe
Trojan:Win64/Latrodectus!rfn	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Midie!MTB	severe
Trojan:Win64/Mikey.MMT!MTB	severe
Trojan:Win64/NightHawk!rfn	severe
Trojan:Win64/Qakbot!rfn	severe
Trojan:Win64/ReflectiveLoader	severe
Trojan:Win64/Rozena.LM!MTB	severe
Trojan:Win64/SpyLoader!rfn	severe
Trojan:Win64/Stealer!MTB	severe
Trojan:Win64/TamperedChef!rfn	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/Tedy.ATY!MTB	severe
Trojan:Win64/Tedy.ZTM!MTB	severe
Trojan:Win64/Vidar!MTB	severe
Trojan:Win64/XLoader!MTB	severe
Trojan:Win64/Xworm.ZBO!MTB	severe
Trojan:Win64/ZLoaderE!rfn	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:HTML/Tnega!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:O97M/Powdow.BKMT!MTB	severe
TrojanDownloader:PHP/Remoteshell.A	severe
TrojanDownloader:PowerShell/Obfuse!rfn	severe
TrojanDownloader:Win32/Fragtor.ARAZ!MTB	severe
TrojanDownloader:Win32/Ponmocup!rfn	severe
TrojanDownloader:Win32/ShortSeek!rfn	severe
TrojanDownloader:Win32/Tnega	severe
TrojanDropper:VBS/Malgent!MSR	severe
TrojanDropper:Win32/Delf.BL!MTB	severe
TrojanDropper:Win32/Muldrop.V!MTB	severe
TrojanDropper:Win32/Salgorea.AI!MTB	severe
TrojanSpy:MSIL/Quasar.SQ!MTB	severe
VirTool:MSIL/NetInject!rfn	severe
VirTool:Win32/Tabloid!MTB	severe
VirTool:Win32/VBInject!rfn	severe
VirTool:Win32/VMProtect!rfn	severe
VirTool:Win64/Havokiz!rfn	severe
Worm:AutoIt/Nuqel!rfn	severe
Worm:Win32/Babonock.A	severe
Worm:Win32/Citeary!rfn	severe
Worm:Win32/Gamarue!rfn	severe