Change logs for security intelligence update version 1.443.1098.0

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

2/10/2026 2:50:18 AM

Added threat detections

Name	Severity
Behavior:Win32/SuspHfsExec.A!hva	severe
HackTool:Win32/AutoKMS.DA!MTB	high
HackTool:Win64/Malgent.DA!MTB	high
Trojan:Python/CVE-2025-52691.DA!MTB	severe
Trojan:Python/CVE-2025-8110.DA!MTB	severe
Trojan:VBA/Downloader!MTB	severe
Trojan:VBS/CVE-2025-53690.DA!MTB	severe
Trojan:Win32/ClickFix.IK!MTB	severe
Trojan:Win32/ValleyRAT.PGVR!MTB	severe
TrojanDropper:JS/Obfuse.DB!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/Trickler.RT!MTB	high
Backdoor:MSIL/AsyncRAT.AA!MTB	severe
Backdoor:MSIL/Crysan!rfn	severe
Backdoor:Win32/Koceg!rfn	severe
Backdoor:Win64/CobaltStrike!rfn	severe
Backdoor:Win64/Nukesped	severe
Backdoor:Win64/PipeMagic!rfn	severe
Behavior:Win32/SpoolExp.Z!MTB	severe
BrowserModifier:Win32/MediaArena	high
Exploit:Win32/Tudimons.A!dha	severe
HackTool:MSIL/AutoKMS!rfn	high
HackTool:PowerShell/PowerView!pz	high
HackTool:Win32/AutoKMS!rfn	high
HackTool:Win32/Cobaltstrike!rfn	high
HackTool:Win32/Keygen	high
HackTool:Win32/Logoloz!rfn	high
HackTool:Win32/RemoteAdmin!MTB	high
Misleading:Win32/Lodi!MSR	high
Ransom:Linux/BlackSuit!rfn	severe
Ransom:SH/ESXiArgs.A!MTB	severe
Ransom:Win64/Akira!rfn	severe
Ransom:Win64/Lockbit.PMK!MTB	severe
Ransom:Win64/PANDORA.REL!MTB	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/Qakbot!rfn	severe
Trojan:HTML/Cryxos.SLZT!MTB	severe
Trojan:HTML/FakeLogin.SLAF!MTB	severe
Trojan:HTML/Phish.AHE!MTB	severe
Trojan:HTML/Phish.AUPB!MTB	severe
Trojan:HTML/Phish.SLZM!MTB	severe
Trojan:HTML/Phish.SLZW!MTB	severe
Trojan:HTML/Phishing.ER!MTB	severe
Trojan:HTML/Pterodo!rfn	severe
Trojan:HTML/Qakbot!rfn	severe
Trojan:Java/CoinMiner!MTB	severe
Trojan:JS/Redirector.ABOB!MTB	severe
Trojan:JS/Redirector.ACQ!MTB	severe
Trojan:JS/Redirector.POK!MTB	severe
Trojan:JS/Runner!MTB	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MSIL/AgentTesla!rfn	severe
Trojan:MSIL/AsyncRAT.ARR!MTB	severe
Trojan:MSIL/Heracles.CC!MTB	severe
Trojan:MSIL/Zusy.AZY!MTB	severe
Trojan:O97M/Qakbot!rfn	severe
Trojan:PDF/Phish.PB!MTB	severe
Trojan:PDF/Qakbot!rfn	severe
Trojan:PowerShell/CoinStealer.ABC!MTB	severe
Trojan:PowerShell/Malgent!MSR	severe
Trojan:PowerShell/QakBot!rfn	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:Script/SvgStealer.AF!MTB	severe
Trojan:VBS/Qakbot!rfn	severe
Trojan:Win32/AprilAxe!rfn	severe
Trojan:Win32/AresLdrCrypt!rfn	severe
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/CobaltStrike!rfn	severe
Trojan:Win32/Copak.KKA!MTB	severe
Trojan:Win32/CoreWarrior.DA!MTB	severe
Trojan:Win32/CryptInject!rfn	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Farfli.KK!MTB	severe
Trojan:Win32/FileCoder!rfn	severe
Trojan:Win32/Kazadm.A!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/KoiLoader!rfn	severe
Trojan:Win32/Leonem	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/Malgent!rfn	severe
Trojan:Win32/MalLoader!rfn	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/Otfrem.A!MTB	severe
Trojan:Win32/PhishLeonem!rfn	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Povertystealer!rfn	severe
Trojan:Win32/Predator!rfn	severe
Trojan:Win32/Qakbot!rfn	severe
Trojan:Win32/Rugmi!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/ShellcodeRunner!MTB	severe
Trojan:Win32/ShortSeek!rfn	severe
Trojan:Win32/SolarMark!rfn	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tedy!MTB	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Vilsel.A!MTB	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win64/BlackWidow!rfn	severe
Trojan:Win64/BRatStealer.PGBS!MTB	severe
Trojan:Win64/CobaltStrike!rfn	severe
Trojan:Win64/Emotet!rfn	severe
Trojan:Win64/IcedID!rfn	severe
Trojan:Win64/Jobutyve!rfn	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Maloder!rfn	severe
Trojan:Win64/MuddyWater!MTB	severe
Trojan:Win64/Oyster!rfn	severe
Trojan:Win64/Rhadamanthys.NSW!MTB	severe
Trojan:Win64/Rhadamanthys.NTB!MTB	severe
Trojan:Win64/Rhadamanthys.NTD!MTB	severe
Trojan:Win64/Rhadamanthys.NTF!MTB	severe
Trojan:Win64/Rhadamanthys.NTG!MTB	severe
Trojan:Win64/Rhadamanthys.NTH!MTB	severe
Trojan:Win64/Rhadamanthys.PGAC!MTB	severe
Trojan:Win64/ShellcodeRunner.AHE!MTB	severe
Trojan:Win64/ShellcodeRunner.AHJ!MTB	severe
Trojan:Win64/ShellcodeRunner.VSW!MTB	severe
Trojan:Win64/SpyLoader!rfn	severe
Trojan:Win64/Tedy.GHT!MTB	severe
Trojan:Win64/WinGoObfusc!rfn	severe
Trojan:Win64/ZLoader!rfn	severe
Trojan:Win64/Zusy!MTB	severe
Trojan:Win64/Zusy.KK!MTB	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:O97M/Donoff!rfn	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:O97M/Qakbot!rfn	severe
TrojanDownloader:O97M/Ursnif!rfn	severe
TrojanDownloader:PowerShell/Obfuse!rfn	severe
VirTool:MSIL/Amsepaz!rfn	severe
VirTool:Win32/Sliver!rfn	severe
Worm:Win32/Mydoom.PB!MTB	severe