Change logs for security intelligence update version 1.451.333.0

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.

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Security intelligence update version

Released on

6/8/2026 8:12:39 PM

Added threat detections

Name	Severity
Behavior:Linux/NetexecWinrm.WT	severe
Behavior:Linux/OMIChild.WT	severe
Behavior:Win32/AMSI.WinRM.WT	severe
Behavior:Win32/GiantAuthor.A!nri	severe
Behavior:Win32/SuspAnydeskRMM.A!ofn	severe
Behavior:Win32/SuspGpoLogonScriptPayloadDrop.A	severe
Behavior:Win32/SuspGpoLogonScriptStaging.A	severe
Behavior:Win32/SuspIisWebrootAclGrant.A	severe
Behavior:Win32/SuspNextJsRscDeserRce.A	severe
Behavior:Win32/SuspNextJsRscDeserRce.A!sms	severe
Behavior:Win32/WebSvrWinRM.WT	severe
Behavior:Win32/WinRMChild.WT	severe
Behavior:Win32/WinRMConfig.WT	severe
Behavior:Win32/WinRMCredentialDumps.WT	severe
Behavior:Win32/WinRMLateralMove.WT	severe
Behavior:Win32/WinRMLateralToolingChild.WT	severe
Behavior:Win32/WinRMMultiHop.WT	severe
Behavior:Win32/WinRMRecons.WT	severe
Behavior:Win32/WinRMRemoteLsassDump.WT	severe
Behavior:Win32/WinRMServerEnable.WT	severe
Behavior:Win32/WinRMSuspCmd.WT!nri	severe
Exploit:Win32/Wwwrootkit.AM	severe
Phish:HTML/FakeLogin.PHM!MTB	severe
Trojan:BAT/NetLoader.A!AMTB	severe
Trojan:HTML/Cryxos.C!AMTB	severe
Trojan:HTML/FakeCaptcha.C!AMTB	severe
Trojan:HTML/FBJack.C!AMTB	severe
Trojan:HTML/Obfuse.C!AMTB	severe
Trojan:JS/Iframe!AMTB	severe
Trojan:JS/Obfus.SN!MTB	severe
Trojan:JS/Obfuse.ARB!MTB	severe
Trojan:JS/Obfuse.PBD!MTB	severe
Trojan:JS/Redirector.ACU!MTB	severe
Trojan:JS/Redirector.ACV!MTB	severe
Trojan:JS/Redirector.AEWB!MTB	severe
Trojan:JS/Redirector.AFWB!MTB	severe
Trojan:JS/Redirector.NXC!MTB	severe
Trojan:JS/Redirector.NXD!MTB	severe
Trojan:JS/Redirector.SM!MTB	severe
Trojan:MSIL/FormBook.RSH!MTB	severe
Trojan:MSIL/XWorm.ADWB!MTB	severe
Trojan:MSIL/XWorm.GKK!MTB	severe
Trojan:PowerShell/Boxter.ABZ!MTB	severe
Trojan:PowerShell/Obfuse.DQV!MTB	severe
Trojan:PowerShell/Obfuse.NXE!MTB	severe
Trojan:VBS/Alien.SLSH!MTB	severe
Trojan:VBS/GuLoader.RBU!MTB	severe
Trojan:VBS/RemcosRAT.SPY!MTB	severe
Trojan:Win32/InfoStealer.RB!AMTB	severe
Trojan:Win32/Injector.RA!AMTB	severe
Trojan:Win32/KillAV.ABKV!MTB	severe
Trojan:Win32/OffLoader.ACWB!MTB	severe
Trojan:Win32/SuspNextJsRscDeserRce.A!sms	severe
Trojan:Win32/SuspSliverLoader.A	severe
Trojan:Win32/SuspSliverLoader.B	severe
Trojan:Win32/WinLNK.G!AMTB	severe
Trojan:Win64/Aotera.PSX!MTB	severe
Trojan:Win64/Convagent!AMTB	severe
Trojan:Win64/Doina.PAHP!MTB	severe
Trojan:Win64/FakeAlert!MTB	severe
Trojan:Win64/Stealer.KK!MTB	severe
Trojan:Win64/Vidar.GNX!MTB	severe
TrojanDownloader:JS/Powload.RD!AMTB	severe
TrojanDownloader:PowerShell/Boxter.JX!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/ConvertAd	high
Adware:Win32/Tnega	high
Backdoor:Linux/Gafgyt!rfn	severe
Backdoor:Linux/Mirai!rfn	severe
Backdoor:MSIL/Bladabindi!rfn	severe
Backdoor:MSIL/Nanocore!rfn	severe
Backdoor:PHP/Webshell	severe
Backdoor:Win32/Diffyndor!rfn	severe
Backdoor:Win32/Padodor.SK!MTB	severe
Behavior:Win32/BruteRatel.MK!ems	severe
Behavior:Win32/PyArmorSMSTrigger.A	severe
Behavior:Win32/SliverBeacon.A!nri	severe
Behavior:Win32/SliverC2mTLS.A!nri	severe
Behavior:Win32/SliverWebShell.A!nri	severe
Behavior:Win32/SusModuleStomp.MK	severe
Behavior:Win32/SuspAnydeskInstall.A!ofn	severe
Behavior:Win32/SuspAnydeskMsiInstall.A!ofn	severe
Behavior:Win32/SuspAnydeskUnattended.A!ofn	severe
Behavior:Win32/SuspBrowserAppDirSideLoad.A	severe
Behavior:Win32/SuspIisShellSpawn.AM	severe
Behavior:Win32/WinRMCredentialAccess.WT	severe
Behavior:Win32/WinRMLolbinExec.WT	severe
Behavior:Win32/WinRMPayloadDrop.WT	severe
Behavior:Win64/CoreFlow.A	severe
BrowserModifier:MSIL/MediaArena	high
BrowserModifier:Win32/MediaArena	high
BrowserModifier:Win32/Shafmia	high
DDoS:Win32/Nitol!rfn	severe
Exploit:Linux/Multiverze	severe
Exploit:O97M/CVE-2017-0199.SZE!MTB	severe
Exploit:Win32/Tudimons.A!dha	severe
HackTool:MSIL/Lazy.MK!MTB	high
HackTool:PowerShell/BloodHound	high
HackTool:PowerShell/DumpDBCreds!rfn	high
HackTool:PowerShell/Powerpuff.A!MTB	high
HackTool:PowerShell/PowerSploit.E	high
HackTool:Python/Impacket!AMTB	high
HackTool:Win32/Agent	high
HackTool:Win32/AutoKMS!MTB	high
HackTool:Win32/crack	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/CVE-2021-26855!rfn	high
HackTool:Win32/Keygen	high
HackTool:Win32/Keygen!AMTB	high
HackTool:Win32/Mailpassview!rfn	high
HackTool:Win32/Malgent!MSR	high
HackTool:Win32/Meterpreter	high
HackTool:Win32/Patcher!AMTB	high
HackTool:Win32/Patcher!MTB	high
HackTool:Win32/RemoteAdmin!rfn	high
HackTool:Win32/Tnega	high
Misleading:Win32/Lodi	high
PWS:MSIL/Stealer!rfn	severe
Ransom:Win32/Basta!rfn	severe
Ransom:Win32/BastaLoader!rfn	severe
Ransom:Win32/Filecoder!rfn	severe
Ransom:Win32/Genasom!rfn	severe
Ransom:Win32/LockBit!MTB	severe
Ransom:Win32/WannaCrypt!rfn	severe
Ransom:Win64/Akira!rfn	severe
Ransom:Win64/Basta!rfn	severe
Ransom:Win64/LockBit!rfn	severe
Ransom:Win64/Rook!rfn	severe
SupportScam:Win32/Screcwon!AMTB	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/LummaStealer	severe
Trojan:BAT/Starter.G!lnk	severe
Trojan:HTML/Phish!rfn	severe
Trojan:HTML/Phish.AHA!MTB	severe
Trojan:HTML/Phish.KKS!MTB	severe
Trojan:HTML/Qakbot!rfn	severe
Trojan:HTML/Redirector.C!AMTB	severe
Trojan:HTML/SLoad.D!AMTB	severe
Trojan:JS/FormBook!MTB	severe
Trojan:JS/Latrodectus!rfn	severe
Trojan:JS/Obfus!MTB	severe
Trojan:JS/Obfuscator!MTB	severe
Trojan:JS/Obfuse.PBD!MTB	severe
Trojan:JS/Qakbot!rfn	severe
Trojan:JS/RedHulud.LTSN!MTB	severe
Trojan:JS/Redirector.AEWB!MTB	severe
Trojan:JS/Redirector.AFWB!MTB	severe
Trojan:JS/Redirector.ARB!MTB	severe
Trojan:JS/Redirector.HNAA!MTB	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:Linux/SAgnt!MSR	severe
Trojan:MacOS/Multiverze!rfn	severe
Trojan:MacOS/NukeSpeed!AMTB	severe
Trojan:MSIL/AgentTesla.OI!rfn	severe
Trojan:MSIL/AsyncRAT.SX!MTB	severe
Trojan:MSIL/Barys.ARR!MTB	severe
Trojan:MSIL/CoinMiner!rfn	severe
Trojan:MSIL/DllInject!rfn	severe
Trojan:MSIL/Exnet.ARR!MTB	severe
Trojan:MSIL/Heracles!MTB	severe
Trojan:MSIL/Lazy.BAC!MTB	severe
Trojan:MSIL/QuasarRat!rfn	severe
Trojan:MSIL/Tedy.ARR!MTB	severe
Trojan:MSIL/Zilla!MTB	severe
Trojan:MSIL/Zusy!MTB	severe
Trojan:MSIL/Zusy.ARR!MTB	severe
Trojan:MSIL/Zusy.KK!MTB	severe
Trojan:O97M/DDownloader!rfn	severe
Trojan:PowerShell/Boxter.PGBA!MTB	severe
Trojan:PowerShell/Obfuse.DQY!MTB	severe
Trojan:PowerShell/Phish.LR!MTB	severe
Trojan:PowerShell/ReverseShell.HNAA!MTB	severe
Trojan:PowerShell/UnicornBypass.A	severe
Trojan:Python/Bobik.EB!MTB	severe
Trojan:Python/Tedy!MTB	severe
Trojan:Script/Malgent!MSR	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:VBS/Emotet!rfn	severe
Trojan:VBS/Malgent!MSR	severe
Trojan:VBS/Pterodo!rfn	severe
Trojan:Win32/Acll!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/AutoitInject.SPB!MTB	severe
Trojan:Win32/Azorult!rfn	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/Cerber!rfn	severe
Trojan:Win32/Chanitor.C	severe
Trojan:Win32/Copak.GPX!MTB	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Doina.MBHT!MTB	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Fauppod!rfn	severe
Trojan:Win32/Flystudio!MTB	severe
Trojan:Win32/FlyStudio.PGC!MTB	severe
Trojan:Win32/FormBook!rfn	severe
Trojan:Win32/Grandoreiro!rfn	severe
Trojan:Win32/GuLoader!rfn	severe
Trojan:Win32/ICLoader!rfn	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/LNKRunner.RD!AMTB	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/NitrogenLdr!rfn	severe
Trojan:Win32/OffLoader!MTB	severe
Trojan:Win32/Oyester!rfn	severe
Trojan:Win32/Pikabot!rfn	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Primarypass!rfn	severe
Trojan:Win32/Qwexlafiba!rfn	severe
Trojan:Win32/Ravartar!rfn	severe
Trojan:Win32/RedLineStealer!MTB	severe
Trojan:Win32/Salgorea.SLWO!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Sehyioa.A!cl	severe
Trojan:Win32/ShortSeek!rfn	severe
Trojan:Win32/Skeeyah	severe
Trojan:Win32/Supma.A	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tedy!MTB	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/VMProtect	severe
Trojan:Win32/XWorm!rfn	severe
Trojan:Win32/XWorm.A!AMTB	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Zbot.EAEN!MTB	severe
Trojan:Win32/Zbot.SD!MTB	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win32/Zusy!rfn	severe
Trojan:Win64/AVTamper!rfn	severe
Trojan:Win64/BlackWidow!rfn	severe
Trojan:Win64/BruteRatel.MK!!BruteRatel.MK!ems	severe
Trojan:Win64/BumbleBee!rfn	severe
Trojan:Win64/CobaltStrike!rfn	severe
Trojan:Win64/CoinMiner!rfn	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/Dapato.ARR!MTB	severe
Trojan:Win64/Donut!rfn	severe
Trojan:Win64/Emotet!MTB	severe
Trojan:Win64/Emotet!rfn	severe
Trojan:Win64/Emotetcrypt!rfn	severe
Trojan:Win64/EmotetPacker!rfn	severe
Trojan:Win64/FakeAlert!MTB	severe
Trojan:Win64/IcedID!rfn	severe
Trojan:Win64/Injuke!MTB	severe
Trojan:Win64/Lazy!MTB	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Maloder!rfn	severe
Trojan:Win64/Midie!MTB	severe
Trojan:Win64/Mikey!MTB	severe
Trojan:Win64/Oyster!rfn	severe
Trojan:Win64/QQPass!MTB	severe
Trojan:Win64/Sheheq!rfn	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/Tedy.A!AMTB	severe
Trojan:Win64/Tedy.KK!MTB	severe
Trojan:Win64/Vidar!MTB	severe
Trojan:Win64/VMProtect!MTB	severe
Trojan:Win64/XMRig.PA!MTB	severe
Trojan:Win64/ZLoaderE!rfn	severe
Trojan:Win64/Zusy!MTB	severe
Trojan:Win64/Zusy!rfn	severe
TrojanDownloader:BAT/Phish!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Donoff!MSR	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:O97M/Emotet.RKC!MTB	severe
TrojanDownloader:O97M/Emotet.RPET!MTB	severe
TrojanDownloader:Script/Malgent.SST!MSR	severe
TrojanDownloader:VBS/Obfuse!MTB	severe
TrojanDownloader:Win32/Fragtor.ARAZ!MTB	severe
TrojanDownloader:Win32/Silcon!rfn	severe
TrojanDropper:PowerShell/PowerSploit.S!MSR	severe
TrojanDropper:Win32/Malgent!MSR	severe
VirTool:Win32/AmsiTamper	severe
VirTool:WinNT/Rootkitdrv!rfn	severe
Worm:AutoIt/Nuqel!rfn	severe
Worm:Win32/AutoRun.XXY!bit	severe
Worm:Win32/Citeary!rfn	severe
Worm:Win32/Ganelp.AF!MTB	severe