Change logs for security intelligence update version 1.445.358.0

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

3/4/2026 10:57:49 PM

Added threat detections

Name	Severity
Trojan:BAT/Downloader.KP!MSR	severe
Trojan:HTML/Phish.SLBF!MTB	severe
Trojan:HTML/Phish.SLBG!MTB	severe
Trojan:HTML/Redirector.SZST!MTB	severe
Trojan:HTML/ScrInject.AGT!MTB	severe
Trojan:MSIL/BadPaw.MKV!MTB	severe
Trojan:Win32/ClickFix.ABE!MTB	severe
Trojan:Win64/FormBook.AKA!MTB	severe
Trojan:Win64/ShellcodeRunner.SXI!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/Tnega	high
Adware:Win32/Trickler.A!MTB	high
Backdoor:PHP/Webshell.PA	severe
Backdoor:Win32/Berbew.AA!MTB	severe
Behavior:Win32/Gracing.I	severe
Behavior:Win32/Mamadut.DC	severe
BrowserModifier:MSIL/MediaArena	high
Exploit:Java/CVE-2014-6332	severe
Exploit:O97M/CVE-2017-11882.A	severe
Exploit:O97M/CVE-2025-53770.DA!ams	severe
HackTool:Linux/Fscan.A!MTB	high
HackTool:PowerShell/CredentialTool.A	high
HackTool:Python/Impacket!AMTB	high
HackTool:Python/Impacket!MSR	high
HackTool:Python/Impacket.AV	high
HackTool:Win32/crack	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/Keygen	high
HackTool:Win32/Malgent	high
HackTool:Win32/Malgent!MSR	high
HackTool:Win32/Mimikatz!rfn	high
HackTool:Win32/Patcher	high
HackTool:Win32/RemoteAdmin!MTB	high
HackTool:Win32/WNetWatcher!MTB	high
Joke:Win32/PopupPrank	moderate
Program:AndroidOS/Multiverze	high
Ransom:Win32/Basta!rfn	severe
Ransom:Win32/DragonForce!rfn	severe
Ransom:Win32/Qilinloader!rfn	severe
Ransom:Win32/Rapidstop!rfn	severe
Ransom:Win32/WarLock.MKV!MTB	severe
Ransom:Win64/LockBit!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/Malscript!MTB	severe
Trojan:HTML/Phish.ZWW!MTB	severe
Trojan:HTML/Qakbot!rfn	severe
Trojan:HTML/Redirector.MSS!MTB	severe
Trojan:HTML/Redirector.SEU!MTB	severe
Trojan:HTML/ScrInject.SJKP!MTB	severe
Trojan:JS/Cryxos.AH!MTB	severe
Trojan:JS/Redirector.AHC!MTB	severe
Trojan:JS/Redirector.ZEI!MTB	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MSIL/AgentTesla!rfn	severe
Trojan:MSIL/CryptTrickldr!rfn	severe
Trojan:MSIL/SolarMarker!rfn	severe
Trojan:PowerShell/Malgent!MSR	severe
Trojan:Python/Loader.ARTB!MTB	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:VBS/Zusy!MTB	severe
Trojan:Win32/Acll!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/BlackMoon.BAA!MTB	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/CryptInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Flystudio!MTB	severe
Trojan:Win32/Kazadm.A!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/KoiLoader!rfn	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/Mamson.A!ac	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/NSISInject!MTB	severe
Trojan:Win32/Nukesped.MK!MTB	severe
Trojan:Win32/Qakbot!rfn	severe
Trojan:Win32/Ramnit!rfn	severe
Trojan:Win32/Salgorea.A!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/SelfDel.A!MTB	severe
Trojan:Win32/ShellcodeRunner.LME!MTB	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/Yomal!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy.BL!MTB	severe
Trojan:Win64/BumbleBee!rfn	severe
Trojan:Win64/CobaltStrike!rfn	severe
Trojan:Win64/Crypmodadv.ASG!MTB	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/CutFailMiner.YBE!MTB	severe
Trojan:Win64/Emotet!rfn	severe
Trojan:Win64/Emotetcrypt!rfn	severe
Trojan:Win64/Formbook!MTB	severe
Trojan:Win64/IcedID!rfn	severe
Trojan:Win64/Oyster!rfn	severe
Trojan:Win64/OysterLoader!rfn	severe
Trojan:Win64/Qakbot!rfn	severe
Trojan:Win64/ReflectiveLoader	severe
Trojan:Win64/Shelm!rfn	severe
Trojan:Win64/Skeeyah.MG!MTB	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/TerraCrypt!rfn	severe
TrojanDownloader:JS/Emotet!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:JS/Qbot!rfn	severe
TrojanDownloader:JS/Swabfex.P	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:O97M/Obfuse.AG!MTB	severe
TrojanDropper:Win32/Salgorea.AI!MTB	severe
VirTool:Java/Meterpreter.A	severe