Change logs for security intelligence update version 1.423.128.0

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.

Looking for the latest update? Download the latest update

Security intelligence update version

Released on

2/26/2025 10:04:13 PM

Added threat detections

Name	Severity
Exploit:O97M/CVE-2017-0199.LBW!MTB	severe
Phish:HTML/Redirector.PJ!MTB	severe
Trojan:MSIL/VIPKeylogger.PHS!MTB	severe
Trojan:VBS/FormBook.LBV!MTB	severe
Trojan:Win32/Alreay.A	severe
Trojan:Win32/BlueNoroff.A	severe
Trojan:Win32/Bullboka!rfn	severe
Trojan:Win32/HuntersIntPS.A	severe
Trojan:Win32/Kimsuky.AA	severe
Trojan:Win32/Kimsukya.A	severe
Trojan:Win32/KimsukyPS.A	severe
Trojan:Win32/Lumma.KN!MTB	severe
Trojan:Win32/MSILAgent.A	severe
Trojan:Win32/MSILAgent.AA	severe
Trojan:Win32/ObfDldr.A	severe
Trojan:Win32/PSAyncRat.A	severe
Trojan:Win32/WininetStarter.A	severe
Trojan:Win32/Xegumumune.A	severe
TrojanDownloader:PowerShell/FakeCaptcha.BTS!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/Hotbar	high
Adware:Win32/Multiverze!rfn	high
Backdoor:MSIL/Bladabindi.RKC!MTB	severe
Backdoor:MSIL/DCRat.D!MTB	severe
Backdoor:MSIL/LimeRAT.A!MTB	severe
Backdoor:Win32/Hupigon!pz	severe
Behavior:Win32/SimForceRescan.A	severe
HackTool:MSIL/AutoKMS!rfn	high
HackTool:Python/Impacket!AMTB	high
HackTool:Win32/Crack!rfn	high
HackTool:Win32/Keygen	high
HackTool:Win32/Loader	high
Program:AndroidOS/Multiverze	high
Program:Win32/Multiverze!rfn	high
Program:Win32/Vigram.A	high
PWS:Win32/Fareit	severe
PWS:Win32/Lmir!rfn	severe
Ransom:Win32/StopCrypt.MAPK!MTB	severe
Ransom:Win32/StopCrypt.MTK!MTB	severe
Ransom:Win32/StopCrypt.PH!MTB	severe
Rogue:Win32/Winwebsec	severe
Spyware:Win32/CnsMin	high
Trojan:HTML/Obfuse!rfn	severe
Trojan:HTML/Obfuse.PKJC!MTB	severe
Trojan:MSIL/AgentTesla.BAY!MTB	severe
Trojan:MSIL/AgentTesla.BFF!MTB	severe
Trojan:MSIL/AgentTesla.BSU!MTB	severe
Trojan:MSIL/AgentTesla.CLSM!MTB	severe
Trojan:MSIL/AgentTesla.CUE!MTB	severe
Trojan:MSIL/AgentTesla.DCO!MTB	severe
Trojan:MSIL/AgentTesla.DLB!MTB	severe
Trojan:MSIL/AgentTesla.MXB!MTB	severe
Trojan:MSIL/AgentTesla.PBQ!MTB	severe
Trojan:MSIL/AntiWD.YA!MTB	severe
Trojan:MSIL/DCRat!rfn	severe
Trojan:MSIL/Disabler!rfn	severe
Trojan:MSIL/Disco.DIG!MTB	severe
Trojan:MSIL/Heracles.AMAG!MTB	severe
Trojan:MSIL/Lazy!rfn	severe
Trojan:MSIL/LibeRAT.A!MTB	severe
Trojan:MSIL/LummaC!rfn	severe
Trojan:MSIL/Mokes.B!MTB	severe
Trojan:MSIL/NanoBot.D!MTB	severe
Trojan:MSIL/Redline.GC!MTB	severe
Trojan:MSIL/Redline.NEL!MTB	severe
Trojan:MSIL/RedLine.RPS!MTB	severe
Trojan:MSIL/RedLineStealer.MAG!MTB	severe
Trojan:MSIL/RelineStealer.FO!MTB	severe
Trojan:PDF/Phish!MSR	severe
Trojan:PowerShell/PsAttack!MSR	severe
Trojan:Win32/Acll!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/Amadey.RDS!MTB	severe
Trojan:Win32/ArkeiStealer.EN!MTB	severe
Trojan:Win32/AutoitInject!rfn	severe
Trojan:Win32/AutoitInject.GPAA!MTB	severe
Trojan:Win32/Azorult.MY!MTB	severe
Trojan:Win32/Azorult.RF!MTB	severe
Trojan:Win32/Azorult.RT!MTB	severe
Trojan:Win32/Bumat!rts	high
Trojan:Win32/CryptInject.PN!MTB	severe
Trojan:Win32/DCRat!rfn	severe
Trojan:Win32/Dridex!pz	severe
Trojan:Win32/Dynamer!dtc	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fauppod.AMBB!MTB	severe
Trojan:Win32/Glupteba	severe
Trojan:Win32/Glupteba.VAM!MTB	severe
Trojan:Win32/Grandoreiro.psyM!MTB	severe
Trojan:Win32/GuLoader!rfn	severe
Trojan:Win32/Hancitor.EVK!MTB	severe
Trojan:Win32/IStartSurf.MU!MTB	severe
Trojan:Win32/Krypter.AG!MTB	severe
Trojan:Win32/Kryptik!rfn	severe
Trojan:Win32/Leonem	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Lummac!rfn	severe
Trojan:Win32/LummaStealer!rfn	severe
Trojan:Win32/Malagent	severe
Trojan:Win32/Malex!rfn	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!rfn	severe
Trojan:Win32/Multiverze!rfn	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Qukart!rfn	severe
Trojan:Win32/Raccrypt!rfn	severe
Trojan:Win32/Razy.RB!MTB	severe
Trojan:Win32/RedLine.RDEP!MTB	severe
Trojan:Win32/Relinestealer.XG!MTB	severe
Trojan:Win32/RisePro.KAA!MTB	severe
Trojan:Win32/RisePro.RP!MTB	severe
Trojan:Win32/RiseProStealer.AE!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Sisron!gmb	severe
Trojan:Win32/Skeeyah.A!rfn	severe
Trojan:Win32/Speesipro.A	severe
Trojan:Win32/SpyStealer.XK!MTB	severe
Trojan:Win32/SpyStealer.XS!MTB	severe
Trojan:Win32/Startpage!pz	severe
Trojan:Win32/Stealc!rfn	severe
Trojan:Win32/Stealer!rfn	severe
Trojan:Win32/Strab.GPX!MTB	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Trickbot.GH!MTB	severe
Trojan:Win32/VbInject!MTB	severe
Trojan:Win32/Vindor!pz	severe
Trojan:Win32/Vindor!rfn	severe
Trojan:Win32/WinLnk.A!MTB	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Zenpak.P!MTB	severe
Trojan:Win32/Zenpak.RI!MTB	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/Donut!rfn	severe
Trojan:Win64/Lazy!rfn	severe
Trojan:Win64/Reflo!rfn	severe
Trojan:WinNT/Mediyes.B	severe
TrojanDownloader:Win32/Dalexis.C	severe
TrojanDownloader:Win32/Nemucod!rfn	severe
TrojanSpy:AndroidOS/Banker.AE!MTB	severe
VirTool:MSIL/Perseus.AB!MTB	severe
VirTool:Win64/AzBloodHnd.A	severe
Worm:Win32/Ambler!rfn	severe
Worm:Win32/Lightmoon!pz	severe
Worm:Win32/Sfone	severe