Skip to main content

Change logs for security intelligence update version 1.457.33.0

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

Released on

8/6/2026 6:02:55 PM

Added threat detections

Name Severity
Misleading:Win32/Agent!MSR high
Trojan:HTML/Redirector.GT!MTB severe
Trojan:JS/ConnectWise.AZO!MTB severe
Trojan:JS/NPMinstall.PR!AMTB severe
Trojan:JS/ScrInject.GPKG!MTB severe
Trojan:PowerShell/AmsiBypass.NZA!MTB severe
Trojan:Python/BrowserStealer.PA!MTB severe
Trojan:VBS/Obfus.YXD!MTB severe
Trojan:Win64/Vimditator.NZA!MTB severe
TrojanDropper:O97M/BurrowShell.SJ!MTB severe

Updated threat detections

Name Severity
Backdoor:MSIL/AsyncRat.AD!MTB severe
Behavior:Win32/ZooLoad.D!dha severe
HackTool:Python/Impacket!AMTB high
HackTool:Python/Impacket!MSR high
HackTool:Python/Malgent!MSR high
HackTool:Win32/Crack!MTB high
HackTool:Win32/SharpHound!MSR high
PWS:MSIL/Stealer!rfn severe
Ransom:MSIL/AON.AOR!MTB severe
Ransom:Win32/Filecoder!rfn severe
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:BAT/Qakbot!rfn severe
Trojan:JS/Latrodectus!rfn severe
Trojan:JS/Malgent!MSR severe
Trojan:JS/Qakbot!rfn severe
Trojan:JS/QakbotLNK!rfn severe
Trojan:JS/ShaiHulud.GPKE!MTB severe
Trojan:Linux/Multiverze!rfn severe
Trojan:MSIL/DiscordRAT!MTB severe
Trojan:MSIL/Lazy!MTB severe
Trojan:MSIL/Malgent!MTB severe
Trojan:MSIL/Marsilia!MTB severe
Trojan:MSIL/Redline!rfn severe
Trojan:MSIL/Remcos!MTB severe
Trojan:MSIL/Sdum!MTB severe
Trojan:MSIL/XWorm.RVC!MTB severe
Trojan:O97M/Phish!MSR severe
Trojan:PDF/Phish.AB!MTB severe
Trojan:PDF/Phish.SL!MTB severe
Trojan:PowerShell/Boxter.PGBS!MTB severe
Trojan:Python/BrowserStealer.PB!MTB severe
Trojan:Python/Tnega!MSR severe
Trojan:Script/Malgent!MSR severe
Trojan:Script/Multiverze!rfn severe
Trojan:Win32/Alevaul!rfn severe
Trojan:Win32/AutoitShellInj.EB!MTB severe
Trojan:Win32/BadJoke.LR!MTB severe
Trojan:Win32/Casdet!rfn severe
Trojan:Win32/Convagent!MTB severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/GhostRAT!MSR severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Latrodectus!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MTB severe
Trojan:Win32/Matanbuchus!rfn severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Qwexlafiba!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/WinLNK!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win64/DllInject!rfn severe
Trojan:Win64/Emotetcrypt!rfn severe
Trojan:Win64/HijackLoader!MTB severe
Trojan:Win64/Lazy!MTB severe
Trojan:Win64/Malgent!MSR severe
Trojan:Win64/Malgent!MTB severe
Trojan:Win64/Qakbot!rfn severe
Trojan:Win64/SalatStealer!MTB severe
Trojan:Win64/Tedy!MTB severe
Trojan:Win64/XMRig.PA!MTB severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:PowerShell/Obfuse!rfn severe