Skip to main content

Change logs for security intelligence update version 1.457.49.0

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

8/7/2026 11:45:45 AM

Added threat detections

Name Severity
Trojan:Linux/Mirai.GVZ!MTB severe
Trojan:MSIL/Androm.ABAG!MTB severe
Trojan:NPM/WormPersist.GXM!MTB severe
Trojan:Win64/Lazy.SG!MTB severe

Updated threat detections

Name Severity
Backdoor:Linux/Dakkatoni!rfn severe
Backdoor:MacOS/Mettle!rfn severe
Backdoor:MSIL/Quasar!atmn severe
Backdoor:Win64/BruteRatel!rfn severe
DoS:Win32/FiberLake!rfn severe
HackTool:Win32/Defendercontrol.A high
HackTool:Win32/Keygen!MSR high
HackTool:Win32/KMSActivator!MTB high
HackTool:Win32/Mimikatz.gen high
Joke:AndroidOS/Multiverze!rfn moderate
Program:Win32/Uwamson.A!rfn high
Ransom:MSIL/Filecoder!rfn severe
Ransom:Win64/PANDORA.REL!MTB severe
Ransom:Win64/Prince!rfn severe
Rogue:Win32/Winwebsec severe
Trojan:ALisp/Duxfas.A severe
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:HTML/Qbot!rfn severe
Trojan:JS/QakbotLNK!rfn severe
Trojan:Linux/Downloader!MSR severe
Trojan:Linux/Meterp!rfn severe
Trojan:MSIL/Bobik!rfn severe
Trojan:MSIL/FormBook!rfn severe
Trojan:MSIL/Marsilia!rfn severe
Trojan:O97M/DDownloader!rfn severe
Trojan:PowerShell/Powersploit!MTB severe
Trojan:PowerShell/Powersploit.J severe
Trojan:Script/Multiverze!rfn severe
Trojan:VBS/Emotet!rfn severe
Trojan:Win32/Autoit.EA!MTB severe
Trojan:Win32/AutoitShellInj.EA!MTB severe
Trojan:Win32/BlackMoon.NK!MTB severe
Trojan:Win32/Cobaltstrike!MSR severe
Trojan:Win32/CryptInject.DL!MTB severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Fauppod!rfn severe
Trojan:Win32/FileCoder!rfn severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Oyester!rfn severe
Trojan:Win32/Oyster!rfn severe
Trojan:Win32/Pikabot!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Qwexlafiba!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/StealIt!AMTB severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win32/Znyonm!rfn severe
Trojan:Win64/ClipBanker!rfn severe
Trojan:Win64/CryptBot!MTB severe
Trojan:Win64/Embargo!rfn severe
Trojan:Win64/Emotetcrypt!rfn severe
Trojan:Win64/EmotetPacker!rfn severe
Trojan:Win64/Malgent!rfn severe
Trojan:Win64/Oyster!rfn severe
Trojan:Win64/Oysterloader!rfn severe
Trojan:Win64/RemoteAdmin!rfn severe
Trojan:Win64/RomCom!rfn severe
Trojan:Win64/Splinter!rfn severe
Trojan:Win64/Stealer!MTB severe
Trojan:Win64/Vidar!MTB severe
TrojanDownloader:BAT/QakBotLoader!rfn severe
TrojanDownloader:O97M/Emotet!rfn severe
TrojanDownloader:Win32/Citeary!rfn severe
VirTool:MSIL/Diverteresz!rfn severe
Virus:Win32/Virut.A severe
Worm:MSIL/Mofin!atmn severe
Worm:Win32/Gamarue!rfn severe