Change logs for security intelligence update version 1.453.415.0

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

7/4/2026 1:26:08 AM

Added threat detections

Name	Severity
Backdoor:Win64/StealC.MCZ!MTB	severe
Trojan:AndroidOS/Obfus!MSR	severe
Trojan:VBA/ObfuscatURL.PGOR!MTB	severe
Trojan:VBS/Pterodo.CV!ams	severe
Trojan:Win32/ClickFix.AEZ!MTB	severe
Trojan:Win32/ClickFix.AFZ!MTB	severe
Trojan:Win32/WinLNK.PADG!MTB	severe
Trojan:Win32/WinLNK.PADH!MTB	severe
Trojan:Win32/WinLNK.PADI!MTB	severe
Trojan:Win64/ShellcodeRunner.DSR!MTB	severe
Trojan:Win64/ShellcodeRunner.PAHT!MTB	severe
Trojan:Win64/ValleyRAT.PAHT!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/AdLoad	high
Backdoor:MSIL/AsyncRat.AD!MTB	severe
Backdoor:MSIL/XenoRat.MCT!MTB	severe
Backdoor:Win64/Noiserv!rfn	severe
Behavior:Win32/SuspiciousScriptExecCreatePs.A	severe
Behavior:Win32/SuspiciousScriptExecCreatePs.B	severe
Behavior:Win64/RemusStealer.ARA!MTB	severe
BrowserModifier:Win32/MediaArena	high
Exploit:Perl/CVE-2010-0738	severe
Exploit:Win32/CVE-2025-8088!rfn	severe
HackTool:Win32/Crack!MTB	high
HackTool:Win32/Keygen	high
HackTool:Win32/MeltScreen!MTB	high
HackTool:Win32/RemoteAdmin!rfn	high
Misleading:Win32/Malgent!rfn	high
PWS:MSIL/Stealer!rfn	severe
Ransom:Linux/Babuk!rfn	severe
Ransom:MSIL/LockFile!MTB	severe
Ransom:Win32/ContiCrypt!rfn	severe
Ransom:Win32/Locky.A	severe
Ransom:Win32/PowerRanges!rfn	severe
Ransom:Win32/Qilin!rfn	severe
Ransom:Win64/Akira!rfn	severe
Ransom:Win64/LockBit!rfn	severe
Spammer:PDF/Anonmail!AMTB	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:AndroidOS/FakeApp!MSR	severe
Trojan:AndroidOS/SAgnt!MSR	severe
Trojan:AndroidOS/SpyAgent!MSR	severe
Trojan:AndroidOS/Spynote!MSR	severe
Trojan:BAT/AutoRun!AMTB	severe
Trojan:HTML/FakeUpdate.MK!MTB	severe
Trojan:HTML/Phish!MSR	severe
Trojan:HTML/Phish!rfn	severe
Trojan:HTML/Pterodo!rfn	severe
Trojan:JS/Obfuse.ARB!MTB	severe
Trojan:JS/Obfuse.RR!MTB	severe
Trojan:MSIL/ClipBanker!rfn	severe
Trojan:MSIL/CoinMiner!rfn	severe
Trojan:MSIL/Lazy!rfn	severe
Trojan:MSIL/Prynt!rfn	severe
Trojan:MSIL/QuasarRAT!MTB	severe
Trojan:MSIL/Redline!rfn	severe
Trojan:MSIL/ShellcodeRunner!MTB	severe
Trojan:PDF/Phish!MSR	severe
Trojan:PDF/Phish!rfn	severe
Trojan:PowerShell/Boxter!MTB	severe
Trojan:PowerShell/Habe.A	severe
Trojan:PowerShell/Malgent!MSR	severe
Trojan:PowerShell/Powersploit.A!MTB	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:VBS/Malgent!rfn	severe
Trojan:VBS/Pterodo!rfn	severe
Trojan:Win32/AutoitShellInj!rfn	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/ClickFix.DAD!MTB	severe
Trojan:Win32/ClickFix.EEI!MTB	severe
Trojan:Win32/ClipBanker!rfn	severe
Trojan:Win32/CommandAndControl!rfn	severe
Trojan:Win32/Convagent!MTB	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Fauppod!rfn	severe
Trojan:Win32/Filecoder!rfn	severe
Trojan:Win32/FormBook!rfn	severe
Trojan:Win32/IcedIDLNK!rfn	severe
Trojan:Win32/Kazadm.A!MTB	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/OffLoader!MTB	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Predator!rfn	severe
Trojan:Win32/Pterodo!rfn	severe
Trojan:Win32/Qwexlafiba!rfn	severe
Trojan:Win32/Ravartar!rfn	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Skeeyah.A!MTB	severe
Trojan:Win32/Skeeyah.B!rfn	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Upatre.AHZ!MTB	severe
Trojan:Win32/Vundo!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win32/Zusy!MTB	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/DLLHijack!rfn	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Midie!rfn	severe
Trojan:Win64/Nuitka!rfn	severe
Trojan:Win64/OyesterLoader!rfn	severe
Trojan:Win64/ShellcodeRunner!MTB	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/Zusy!MTB	severe
TrojanClicker:Win32/Doplik.Q	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:MSIL/Tnega	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:SWF/Esaprof!rfn	severe
TrojanDownloader:VBS/CoinMiner	severe
TrojanDownloader:Win32/Fragtor.ARAZ!MTB	severe
TrojanDownloader:Win32/ShortSeek!rfn	severe
VirTool:MSIL/Redthtz!rfn	severe
VirTool:WinNT/Rootkitdrv!rfn	severe
Worm:Win32/Sfone.ECP!MTB	severe