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Change logs for security intelligence update version 1.443.167.0

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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Released on

12/17/2025 3:33:43 AM

Added threat detections

Name Severity
Trojan:Win32/Donut.SB!MTB severe

Updated threat detections

Name Severity
Adware:Win32/AdLoad high
Backdoor:ASP/Chopper.F!dha severe
Backdoor:Linux/Dakkatoni.az!MTB severe
Backdoor:MSIL/AsyncRat!rfn severe
Backdoor:MSIL/AsyncRAT.AA!MTB severe
Backdoor:MSIL/Gensteal!rfn severe
Backdoor:MSIL/Noancooe!rfn severe
Backdoor:MSIL/Quasar!rfn severe
Backdoor:MSIL/Zegost!rfn severe
Backdoor:Python/Meterpreter.B severe
Backdoor:Win32/Androm.BQ!MTB severe
Backdoor:Win32/Coroxy!rfn severe
Backdoor:Win32/Koceg!rfn severe
Backdoor:Win32/Simda!rfn severe
Backdoor:Win64/CobaltStrike!rfn severe
Behavior:Win32/Amadey.DC!MTB severe
Behavior:Win32/Amadey.DD!MTB severe
Behavior:Win32/DLLSideLoad.DC!MTB severe
Behavior:Win32/Makop.DA!MTB severe
BrowserModifier:MSIL/MediaArena!MTB high
Exploit:Win32/ShellCode.gen!C severe
HackTool:MSIL/Malgent!AMTB high
HackTool:MSIL/RunAs!MSR high
HackTool:PowerShell/DumpDBCreds!rfn high
HackTool:PowerShell/PowerView high
HackTool:Python/Impacket!MSR high
HackTool:Python/Impacket!MTB high
HackTool:Python/Impacket.AAI!MSR high
HackTool:Python/Multiverze high
HackTool:Win32/AdFind!AMTB high
HackTool:Win32/Agent high
HackTool:Win32/crack high
HackTool:Win32/Crack!MTB high
HackTool:Win32/DongleHack high
HackTool:Win32/GameHack!MTB high
HackTool:Win32/Keygen high
HackTool:Win32/Keygen!rfn high
HackTool:Win32/Logoloz!rfn high
HackTool:Win32/Malgent!MSR high
HackTool:Win32/Patch high
HackTool:Win32/Patcher high
HackTool:Win32/Patcher!AMTB high
HackTool:Win32/PowersploitHijack.A!dll high
HackTool:Win32/WNetWatcher!MTB high
HackTool:Win32/Wpakill.AR!MTB high
MonitoringTool:Win32/MicTrayDebugger severe
Program:MacOS/Multiverze!rfn high
PWS:MSIL/Browsstl!rfn severe
Ransom:Win32/Crowti.A severe
Ransom:Win32/Genasom severe
Ransom:Win32/Inc!rfn severe
Ransom:Win32/LockBit!MTB severe
Ransom:Win32/Mortis!rfn severe
Ransom:Win64/Lockbit.PMK!MTB severe
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:BAT/Qakbot!rfn severe
Trojan:BAT/Starter.G!lnk severe
Trojan:HTML/FakeAlert.B severe
Trojan:HTML/Phish.AKNB!MTB severe
Trojan:HTML/Pterodo!rfn severe
Trojan:HTML/Qakbot!rfn severe
Trojan:JS/Agent severe
Trojan:JS/Malgent!MSR severe
Trojan:JS/Redirector.BAJ!MTB severe
Trojan:JS/Redirector.OB severe
Trojan:JS/Ursnif!rfn severe
Trojan:JS/Ursnif.ST!MTB severe
Trojan:Linux/Multiverze!rfn severe
Trojan:MSIL/AgentTesla severe
Trojan:MSIL/Barys.AR!MTB severe
Trojan:MSIL/CoinMiner!rfn severe
Trojan:MSIL/Crysen!rfn severe
Trojan:MSIL/Disttl!rfn severe
Trojan:MSIL/DllInject.N!MTB severe
Trojan:MSIL/Masslogger!MTB severe
Trojan:MSIL/Razy.PGRZ!MTB severe
Trojan:MSIL/Redline!rfn severe
Trojan:MSIL/Tedy.ATY!MTB severe
Trojan:PDF/Phish!rfn severe
Trojan:PowerShell/Powersploit.T severe
Trojan:PowerShell/QakBot!rfn severe
Trojan:Script/Malgent!MSR severe
Trojan:Script/Metasploit!MSR severe
Trojan:Script/Webshell!AMTB severe
Trojan:VBS/AsyncRAT.P!MTB severe
Trojan:VBS/Emotet!rfn severe
Trojan:VBS/Qakbot!rfn severe
Trojan:Win32/AgeDown.DA!MTB severe
Trojan:Win32/Agent!MSR severe
Trojan:Win32/Alevaul!rfn severe
Trojan:Win32/AprilAxe!rfn severe
Trojan:Win32/AresLdr!rfn severe
Trojan:Win32/Blihan.MA!MTB severe
Trojan:Win32/Bluteal!rfn severe
Trojan:Win32/Casdet!rfn severe
Trojan:Win32/Ceevee severe
Trojan:Win32/CobaltStrike!rfn severe
Trojan:Win32/CoreWarrior.DA!MTB severe
Trojan:Win32/CryptInject severe
Trojan:Win32/CryptInject!rfn severe
Trojan:Win32/Daws.EC!MTB severe
Trojan:Win32/DllInject!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Emotet.UT!MTB severe
Trojan:Win32/Etset!rfn severe
Trojan:Win32/Farfli!rfn severe
Trojan:Win32/FileCoder!rfn severe
Trojan:Win32/FormBook!rfn severe
Trojan:Win32/Injector.RAQ!MTB severe
Trojan:Win32/Kazadm.A!MTB severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/KeyGen!AMTB severe
Trojan:Win32/KoiLoader!rfn severe
Trojan:Win32/LatenBot.EA!MTB severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent!AMTB severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/Malgent!MTB severe
Trojan:Win32/MalLoader!rfn severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Meterpreter!rfn severe
Trojan:Win32/Mikey!rfn severe
Trojan:Win32/Occamy!rfn severe
Trojan:Win32/Otfrem.A!MTB severe
Trojan:Win32/Pikabot!rfn severe
Trojan:Win32/PlugX.psyP!MTB severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Qakbot!rfn severe
Trojan:Win32/Remcos!rfn severe
Trojan:Win32/Salgorea.C!MTB severe
Trojan:Win32/ScriptSpy severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Skeeyah.A!MTB severe
Trojan:Win32/StormAttack.A!MTB severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/SystemBC!rfn severe
Trojan:Win32/Tiggre severe
Trojan:Win32/Tiggre!plock severe
Trojan:Win32/Tiggre!rfn severe
Trojan:Win32/Tiny.AB!MTB severe
Trojan:Win32/Tnega!MTB severe
Trojan:Win32/Ursnif!rfn severe
Trojan:Win32/Vilsel.A!MTB severe
Trojan:Win32/Vindor!rfn severe
Trojan:Win32/WinLNK!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win32/Zbot.HBAI!MTB severe
Trojan:Win32/Zloader!rfn severe
Trojan:Win32/Znyonm!rfn severe
Trojan:Win32/Zusy.HNS!MTB severe
Trojan:Win64/AsyncRat!rfn severe
Trojan:Win64/Cobaltstrike!rfn severe
Trojan:Win64/CoinMiner!rfn severe
Trojan:Win64/CryptInject!rfn severe
Trojan:Win64/Donut!rfn severe
Trojan:Win64/Emotet!rfn severe
Trojan:Win64/FSAutcik severe
Trojan:Win64/Gulpix!rfn severe
Trojan:Win64/IcedID!rfn severe
Trojan:Win64/Malgent!MSR severe
Trojan:Win64/Mikey.MMT!MTB severe
Trojan:Win64/Rhadamanthys.NRK!MTB severe
Trojan:Win64/Rozena!rfn severe
Trojan:Win64/SpyLoader!rfn severe
Trojan:Win64/SystemBc!rfn severe
Trojan:Win64/TurtleLoader!rfn severe
TrojanClicker:Win32/Doplik.Q severe
TrojanDownloader:BAT/QakBotLoader!rfn severe
TrojanDownloader:HTML/Adodb.gen!A severe
TrojanDownloader:JS/Nemucod severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:PowerShell/Obfuse!rfn severe
TrojanDownloader:VBS/CoinMiner severe
TrojanDownloader:Win32/Fragtor.ARAZ!MTB severe
TrojanDownloader:Win32/Rugmi!AMTB severe
TrojanDownloader:Win64/Rugmi!MTB severe
TrojanDropper:Win32/Delf!rfn severe
TrojanDropper:Win32/Pykspa.A severe
TrojanDropper:Win32/Salgorea.AI!MTB severe
TrojanSpy:AndroidOS/SMSAgnt.A!MTB severe
VirTool:Java/Meterpreter.A severe
Virus:Win32/Neshta!rfn severe
Worm:Win32/Emerleox!rfn severe
Worm:Win32/Sfone.ECP!MTB severe