Change logs for security intelligence update version 1.445.374.0

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

3/5/2026 10:43:14 PM

Added threat detections

Name	Severity
Phish:HTML/FakeLogin.DRC!MTB	severe
Phish:HTML/FakeLogin.PS!MSR	severe
Phish:HTML/Redirector.MWN!MTB	severe
Trojan:HTML/Phish.PGHP!MTB	severe
Trojan:MSIL/LummaStealer.CQ!MTB	severe
Trojan:MSIL/MonikerLoader.ST!MTB	severe
Trojan:MSIL/MonikerLoader.SU!MTB	severe
Trojan:MSIL/MonikerLoader.SV!MTB	severe
Trojan:MSIL/Zilla.AZE!MTB	severe
Trojan:PowerShell/Obfuse.MP!MSR	severe
Trojan:VBS/Obfuse.P!MTB	severe
Trojan:VBS/Redirector.SLPM!MTB	severe
Trojan:Win64/Lazy.ABP!MTB	severe
Trojan:Win64/Lazy.ZJH!MTB	severe
TrojanDownloader:Win32/Small.CM!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/Coupons	high
Adware:Win32/Tnega	high
Backdoor:Linux/Mirai!MSR	severe
Backdoor:Linux/Mirai!rfn	severe
Backdoor:MSIL/Bladabindi!rfn	severe
Backdoor:MSIL/Quasar!rfn	severe
Backdoor:PHP/Remoteshell.V	severe
Backdoor:Win32/QuasarRAT!rfn	severe
Backdoor:Win64/Noiserv!rfn	severe
Backdoor:Win64/Vankul!rfn	severe
BrowserModifier:Win32/MediaArena	high
Exploit:Perl/CVE-2010-0738	severe
Exploit:PHP/Deftool.A	severe
Exploit:VBS/CVE-2018-8174!MTB	severe
Exploit:Win32/Vigorf.A	severe
HackTool:Win32/AutoKMS	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/Defendercontrol.A	high
HackTool:Win32/DongleHack	high
HackTool:Win32/Keygen	high
HackTool:Win32/Malgent!MSR	high
HackTool:Win32/Meterpreter!rfn	high
HackTool:Win64/RDPWrap!MTB	high
Misleading:Win32/Lodi	high
Ransom:Linux/Babuk!rfn	severe
Ransom:Win32/Lynx!rfn	severe
Ransom:Win32/NoEscape!rfn	severe
Ransom:Win32/PowerRanges!rfn	severe
Ransom:Win64/DarkPower!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/AVDsiabler!rfn	severe
Trojan:BAT/Obfuse!MSR	severe
Trojan:HTML/Phish.ABP!MTB	severe
Trojan:HTML/Phish.PB!MTB	severe
Trojan:HTML/Redirector.SEU!MTB	severe
Trojan:HTML/ScrInject.SJKP!MTB	severe
Trojan:HTML/Stealer.ARR!MTB	severe
Trojan:JS/Phish!rfn	severe
Trojan:JS/Redirector!MTB	severe
Trojan:JS/Redirector.AHC!MTB	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MSIL/BadJoke!MTB	severe
Trojan:MSIL/Lazy.KKA!MTB	severe
Trojan:MSIL/Malgent!MSR	severe
Trojan:MSIL/RevengeRat!rfn	severe
Trojan:MSIL/Zilla!MTB	severe
Trojan:PDF/Phish.PD!MTB	severe
Trojan:PowerShell/DownloadObfus!rfn	severe
Trojan:PowerShell/Malgent!MSR	severe
Trojan:PowerShell/Powersploit.A!MTB	severe
Trojan:PowerShell/ReverseShell.SA	severe
Trojan:Python/Multiverze!rfn	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:VBS/Emotet!rfn	severe
Trojan:VBS/Malgent!rfn	severe
Trojan:VBS/Obfuse.PR!MTB	severe
Trojan:VBS/Qakbot!rfn	severe
Trojan:Win32/Acll!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/AutoitInject.AHB!MTB	severe
Trojan:Win32/Blacksuit!rfn	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/Cerbu!MTB	severe
Trojan:Win32/CommandAndControl!rfn	severe
Trojan:Win32/CryptInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Farfli!rfn	severe
Trojan:Win32/Fragtor!rfn	severe
Trojan:Win32/IcedIdLNK!rfn	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/KillAv!rfn	severe
Trojan:Win32/Korplug!rfn	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!AMTB	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/ModiLoader!rfn	severe
Trojan:Win32/Neoreblamy!MTB	severe
Trojan:Win32/OffLoader!MTB	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Shella!rfn	severe
Trojan:Win32/ShortcutFileInZipExec!rfn	severe
Trojan:Win32/ShortSeek!rfn	severe
Trojan:Win32/Skeeyah	severe
Trojan:Win32/Spyware.ARR!MTB	severe
Trojan:Win32/Supma.A	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Torbot!rfn	severe
Trojan:Win32/WinLNKRun!rfn	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win64/AVTamper!rfn	severe
Trojan:Win64/CoinMiner!rfn	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/Emotet!rfn	severe
Trojan:Win64/Emotetcrypt!rfn	severe
Trojan:Win64/Lazy!MTB	severe
Trojan:Win64/Malgent!AMTB	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/NightHawk!rfn	severe
Trojan:Win64/OyesterLoader!rfn	severe
Trojan:Win64/ShellcodeRunner!rfn	severe
Trojan:Win64/SpyLoader!rfn	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/Zapchast.ARR!MTB	severe
TrojanClicker:Win32/Doplik.Q	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:PowerShell/Obfuse!rfn	severe
TrojanDownloader:VBS/CoinMiner	severe
TrojanDropper:HTML/Obfuse.PD!MTB	severe
Worm:VBS/Jenxcus	severe
Worm:Win32/Nuqel!rfn	severe
Worm:Win32/Sohanad!rfn	severe