Change logs for security intelligence update version 1.421.1900.0

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

2/14/2025 8:31:39 PM

Added threat detections

Name	Severity
HackTool:Win32/Multiverze!rfn	high
HackTool:Win64/GildedScarab.A	high
HackTool:Win64/GildedScarab.C	high
Phish:HTML/FakeDoc.AD!MTB	severe
Phish:HTML/FakeLogin.SBZ!MTB	severe
Phish:PDF/FakeDownload.PJ!MTB	severe
Trojan:JS/Cryxos.OFT!MTB	severe
Trojan:JS/FormBook.LAV!MTB	severe
Trojan:MSIL/InjectorNetT.AJLA!MTB	severe
Trojan:MSIL/InjectorNetT.AJLA!MTB	severe
Trojan:PDF/FakeDocument.PE!MTB	severe
Trojan:PowerShell/Obfuse.DRV!MTB	severe
Trojan:PowerShell/Obfuse.DRW!MTB	severe
Trojan:VBS/GuLoader.VBN!MTB	severe
Trojan:Win32/AutoitInject.AMLA!MTB	severe
Trojan:Win32/Convagent.ALLA!MTB	severe
Trojan:Win32/DarkCloud.AKLA!MTB	severe
Trojan:Win32/DarkCloud.AKLA!MTB	severe
Trojan:Win32/GuLoader.QSL!MTB	severe
Trojan:Win64/CryptInject.TKZ!MTB	severe
Trojan:Win64/PoolInject.GA!MTB	severe
Trojan:Win64/Rhadamanthys.GA!MTB	severe
TrojanDownloader:PowerShell/Powdow.ORQ!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/Agent	high
Adware:Win32/HostsChanger	high
Adware:Win32/Malcole	high
Adware:Win32/Multiverze!rfn	high
Backdoor:Linux/Gafgyt.CI!MTB	severe
Backdoor:MSIL/Bladabindi!rfn	severe
Backdoor:MSIL/DCRat	severe
Backdoor:Win32/Berbew!pz	severe
Backdoor:Win32/Berbew!rfn	severe
Backdoor:Win32/Berbew.AA!MTB	severe
Backdoor:Win32/Bifrose	severe
Backdoor:Win32/Hupigon.gen!B	severe
Backdoor:Win32/Padodor!rfn	severe
Backdoor:Win32/Padodor.SK!MTB	severe
Backdoor:Win32/Poison	severe
Backdoor:Win32/Simda.AT	severe
Backdoor:Win32/Ursap!rts	severe
Behavior:Win32/Mamadut.DM	severe
BrowserModifier:Win32/IEFeats	high
BrowserModifier:Win32/Prifou	high
HackTool:Win32/Agent	high
HackTool:Win32/crack	high
HackTool:Win32/Crack!MSR	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/GameHack!MTB	high
HackTool:Win32/Injector!MTB	high
HackTool:Win32/Patcher	high
HackTool:Win64/GildedScarab.B	high
Phish:HTML/FakeDoc.AD!MTB	severe
Phish:HTML/FakeLogin.SBI!MTB	severe
Phish:PDF/FakeDownload.PJ!MTB	severe
PWS:Win32/Axespec	severe
PWS:Win32/Gamania.gen!D	severe
PWS:Win32/Prast!rts	severe
Spyware:Win32/Multiverze!rfn	high
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:AndroidOS/Mamont!rfn	severe
Trojan:HTML/Phish	severe
Trojan:Java/Adwind	severe
Trojan:Java/Classloader.X	severe
Trojan:JS/FormBook.LAV!MTB	severe
Trojan:MSIL/AgentTesla.E!MTB	severe
Trojan:MSIL/FileCrypt!rfn	severe
Trojan:MSIL/Injuke.SHLZ!MTB	severe
Trojan:MSIL/Lazy!MTB	severe
Trojan:MSIL/LummaC.ASGH!MTB	severe
Trojan:MSIL/LummaStealer!MTB	severe
Trojan:PDF/Bumblebee.KKP!MTB	severe
Trojan:PDF/Phish.RSA!MTB	severe
Trojan:PowerShell/Obfuse.DRV!MTB	severe
Trojan:PowerShell/Obfuse.DRW!MTB	severe
Trojan:PowerShell/Obfuse.SAME!MTB	severe
Trojan:VBS/GuLoader.VBN!MTB	severe
Trojan:VBS/RemcosRAT.RSC!MTB	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/Convagent.ALLA!MTB	severe
Trojan:Win32/Dcrat	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Flystudio!MTB	severe
Trojan:Win32/Formbook!rfn	severe
Trojan:Win32/Fragtor!MTB	severe
Trojan:Win32/Gamaredon.psyO!MTB	severe
Trojan:Win32/GuLoader.QSK!MTB	severe
Trojan:Win32/GuLoader.QSL!MTB	severe
Trojan:Win32/Gupboot	severe
Trojan:Win32/Ircbrute	severe
Trojan:Win32/Kerproc!rts	high
Trojan:Win32/Killav.DR	severe
Trojan:Win32/Kryptik!rfn	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/LummaC!rfn	severe
Trojan:Win32/Malagent!gmb	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/Midie!MTB	severe
Trojan:Win32/Multiverze!rfn	severe
Trojan:Win32/MyDoom!pz	severe
Trojan:Win32/Neoreblamy!rfn	severe
Trojan:Win32/Orsam!rfn	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/PWSteal	severe
Trojan:Win32/Rootkit!rfn	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Stealc!rfn	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tedy!MTB	severe
Trojan:Win32/Trafog!rts	high
Trojan:Win32/UnusualASEP	severe
Trojan:Win32/VBClone	severe
Trojan:Win32/VBClone!rfn	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win64/Coinminer!rfn	severe
Trojan:Win64/Lazy!MTB	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Malgent!MTB	severe
TrojanDownloader:PowerShell/FakeCaptcha.PRQ!MTB	severe
TrojanDownloader:PowerShell/Powdow.ORQ!MTB	severe
TrojanDownloader:Win32/Swizzor	severe
TrojanDownloader:Win32/Troxen!rts	severe
TrojanDropper:Win32/Hupigon.gen!A	severe
TrojanSpy:Win32/Agent	severe
TrojanSpy:Win32/Hitpop.AE!dll	severe
VirTool:Win32/DelfInject.gen!L	severe
Worm:Win32/Ainslot.A	severe
Worm:Win32/AutoRun.XXY!bit	severe
Worm:Win32/Brontok!pz	severe
Worm:Win32/ExploitBot	severe