Change logs for security intelligence update version 1.445.443.0

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

3/9/2026 5:16:37 PM

Added threat detections

Name	Severity
Backdoor:MSIL/Bladabindi.AWRB!MTB	severe
Phish:HTML/FakeLogin.PABC!MTB	severe
Phish:HTML/Redirector.PHC!MTB	severe
Trojan:JS/Redirector.PAB!MTB	severe
Trojan:JS/Redirector.SA!MSR	severe
Trojan:MSIL/Barys.SLWR!MTB	severe
Trojan:MSIL/DarkTortilla.DPV!MTB	severe
Trojan:MSIL/DllInject.RRI!MTB	severe
Trojan:MSIL/PureLogStealer.ZOH!MTB	severe
Trojan:MSIL/SocStealer.CQ!MTB	severe
Trojan:MSIL/Zusy.BAA!MTB	severe
Trojan:PowerShell/Boxter.SHE!MTB	severe
Trojan:VBS/GuLoader.SPE!MTB	severe
Trojan:VBS/Obfuse.T!AMTB	severe
Trojan:Win32/Aotera!MTB	severe
Trojan:Win32/DonutLoader.RR!MTB	severe
Trojan:Win32/Minix.SI!MTB	severe
Trojan:Win64/Lazy.CQ!MTB	severe
Trojan:Win64/LummaStealer.AP!AMTB	severe
Trojan:Win64/Oysterloader.SPE!MTB	severe
Trojan:Win64/Scar.SEQP!MTB	severe
Trojan:Win64/Tedy.AGX!MTB	severe
Trojan:Win64/ValleyRat.XWB!MTB	severe
Trojan:Win64/Vidar.SJ!MTB	severe
Trojan:Win64/Vidar.SYT!MTB	severe
Trojan:Win64/WingoObfus.CQ!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/BroExt!MSR	high
Adware:Win32/Tnega	high
Backdoor:Win32/Coroxy!rfn	severe
BrowserModifier:Win32/Shafmia	high
HackTool:PowerShell/Powersploit	high
HackTool:PowerShell/PowerView	high
HackTool:PowerShell/PowerView.A	high
HackTool:Python/Impacket!MSR	high
HackTool:Python/Impacket.V	high
HackTool:Win32/AutoKMS	high
HackTool:Win32/AutoKMS!MTB	high
HackTool:Win32/DongleHack	high
HackTool:Win32/Keygen	high
HackTool:Win32/Keygen!MTB	high
HackTool:Win32/RemoteAdmin!rfn	high
HackTool:Win32/Tnega!MTB	high
HackTool:Win64/JuicyPotato!rfn	high
Ransom:Win32/Babuk!rfn	severe
Ransom:Win32/BlackCat!rfn	severe
Ransom:Win32/Clop!rfn	severe
Ransom:Win32/Helldown!rfn	severe
Ransom:Win32/Lockbit!rfn	severe
Ransom:Win64/FunkSec!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/Qakbot!rfn	severe
Trojan:HTML/Qakbot!rfn	severe
Trojan:HTML/Redirector.ZXX!MTB	severe
Trojan:JS/AgentTesla.P!MTB	severe
Trojan:JS/GuLoader.RBH!MTB	severe
Trojan:JS/Obfuse.BB!MTB	severe
Trojan:JS/QakbotLNK!rfn	severe
Trojan:JS/Redirector.AHC!MTB	severe
Trojan:JS/Redirector.ATKB!MTB	severe
Trojan:JS/Redirector.ATRB!MTB	severe
Trojan:Linux/CoinMiner!rfn	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MSIL/BadJoke	severe
Trojan:MSIL/XWorm.AURB!MTB	severe
Trojan:O97M/DDownloader!rfn	severe
Trojan:PDF/Phish.MP!MSR	severe
Trojan:PowerShell/Boxter!MSR	severe
Trojan:PowerShell/Pklotide.A	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:Script/Obfuse	severe
Trojan:VBS/Agent!AMTB	severe
Trojan:VBS/Emotet!rfn	severe
Trojan:VBS/GuLoader.RBM!MTB	severe
Trojan:VBS/Qakbot!rfn	severe
Trojan:VBS/Zusy!MTB	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/Batpenr.A!MTB	severe
Trojan:Win32/Ceevee	severe
Trojan:Win32/Convagent.BAF!MTB	severe
Trojan:Win32/Coroxy!rfn	severe
Trojan:Win32/Dinwod!rfn	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Emotet.ARJ!MTB	severe
Trojan:Win32/Eqtonex!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fauppod!rfn	severe
Trojan:Win32/Guloader.SI!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/Lazy!rfn	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!rfn	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/Occamy!rfn	severe
Trojan:Win32/PhishLeonem!rfn	severe
Trojan:Win32/Pikabot!rfn	severe
Trojan:Win32/PonyStealer!rfn	severe
Trojan:Win32/Predator!rfn	severe
Trojan:Win32/Qakbot!rfn	severe
Trojan:Win32/Qbot!rfn	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Skeeyah.A!MTB	severe
Trojan:Win32/Stelac!rfn	severe
Trojan:Win32/Supma.A	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/XWorm!MSR	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win32/Zusy.HBE!MTB	severe
Trojan:Win64/BumbleBee!rfn	severe
Trojan:Win64/CobaltStrike!rfn	severe
Trojan:Win64/Donut!rfn	severe
Trojan:Win64/Emotet!rfn	severe
Trojan:Win64/Latrodectus!rfn	severe
Trojan:Win64/Lazy!MTB	severe
Trojan:Win64/Lazy.RR!MTB	severe
Trojan:Win64/Meterpreter!rfn	severe
Trojan:Win64/Mikey.SXI!MTB	severe
Trojan:Win64/Retliften.A	severe
Trojan:Win64/Sheheq!rfn	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/Ulise.SXA!MTB	severe
Trojan:Win64/Vidar.AQ!AMTB	severe
TrojanClicker:Win32/Doplik.Q	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:JS/Malgent!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:PDF/Qakbot!rfn	severe
TrojanSpy:AndroidOS/Handda.A!MTB	severe
TrojanSpy:Win32/Rebhip!rfn	severe
UwS:MSIL/Malgent!MSR	high
VirTool:Java/Meterpreter.A	severe
VirTool:MSIL/Aikaantivm.GG!MTB	severe
Worm:VBS/Slogod.F	severe
Worm:Win32/Brontok!rfn	severe