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Change logs for security intelligence update version 1.461.215.0

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

10/26/2026 7:06:05 PM

Added threat detections

Name Severity
Trojan:PowerShell/MaLoader.DD!MTB severe
Trojan:VBA/Loader!AMTB severe
Trojan:VBS/GuLoader.DQ!MTB severe
Trojan:Win64/Fragtor.LR!MTB severe
Trojan:Win64/GolstaStealer!MTB severe
TrojanDownloader:Win32/PowerShell!AMTB severe

Updated threat detections

Name Severity
Adware:MacOS/Multiverze!rfn high
Adware:Win32/Tnega high
Backdoor:JS/MonGorShell!rfn severe
Backdoor:Linux/Mirai!rfn severe
Backdoor:Linux/Multiverze!rfn severe
Backdoor:MSIL/Noancooe!rfn severe
Backdoor:MSIL/Orcus!rfn severe
Backdoor:MSIL/XWormRAT!rfn severe
Backdoor:PHP/Remoteshell!rfn severe
Backdoor:PHP/Webshell!rfn severe
Backdoor:Python/Meterpreter.B severe
Backdoor:Python/Meterpreter.C severe
Backdoor:Win32/Berbew!rfn severe
Backdoor:Win32/Diffyndor!rfn severe
Backdoor:Win32/Koceg!rfn severe
Backdoor:Win64/BruteRatel!rfn severe
Backdoor:Win64/MeterpreterReverseShell!rfn severe
Exploit:Linux/DirtyFrag!rfn severe
Exploit:MacOS/LimeRain!rfn severe
Exploit:NPM/Multiverze!rfn severe
Exploit:O97M/CVE-2017-11882!rfn severe
Exploit:Script/Multiverze!rfn severe
HackTool:AndroidOS/Mesploit!rfn high
HackTool:AndroidOS/Multiverze!rfn high
HackTool:PowerShell/Powersploit high
HackTool:PowerShell/PowerView!rfn high
HackTool:Win32/crack high
HackTool:Win32/Crack!AMTB high
HackTool:Win32/Crack!MTB high
HackTool:Win32/DongleHack high
HackTool:Win32/Keygen high
HackTool:Win32/Meshagent.MBZ!MTB high
HackTool:Win32/Mimilove.A!dha high
HackTool:Win32/PsAttack!rfn high
HackTool:Win64/Mimikatz!rfn high
Misleading:Win32/Malgent high
Misleading:Win32/Malgent!AMTB high
Program:MacOS/Multiverze!rfn high
Program:Script/Multiverze!rfn high
PWS:Python/Multiverze!rfn severe
Ransom:Win32/BabukAgent!rfn severe
Ransom:Win32/BlackCat!rfn severe
Ransom:Win32/ContiCrypt!rfn severe
Ransom:Win32/Lockbit!rfn severe
Ransom:Win32/Play.PAA!MTB severe
Ransom:Win32/Qilinloader!rfn severe
Ransom:Win64/BlackByte!rfn severe
Ransom:Win64/Gentlemen!rfn severe
Ransom:Win64/Shinyspider!rfn severe
Spyware:AndroidOS/Multiverze!rfn high
SupportScam:Win32/Screcwon!AMTB severe
Tool:Linux/Multiverze!rfn moderate
Trojan:AndroidOS/Autopay!rfn severe
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:AndroidOS/Multiverze!rfn severe
Trojan:AndroidOS/Shedun!rfn severe
Trojan:HTML/Phish!MTB severe
Trojan:HTML/Phish!rfn severe
Trojan:HTML/Qakbot!rfn severe
Trojan:JS/Obfus!MTB severe
Trojan:JS/Obfuse!AMTB severe
Trojan:JS/Obfuse!rfn severe
Trojan:JS/QakbotLNK!rfn severe
Trojan:JS/Redirector.HNAA!MTB severe
Trojan:Linux/Mirai!rfn severe
Trojan:Linux/Multiverze!rfn severe
Trojan:MacOS/Multiverze!rfn severe
Trojan:MSIL/AgentTesla!rfn severe
Trojan:MSIL/barys!MTB severe
Trojan:MSIL/FormBook!rfn severe
Trojan:MSIL/Jalapeno!rfn severe
Trojan:MSIL/Perseus!rfn severe
Trojan:MSIL/r77RootKit!rfn severe
Trojan:MSIL/XWorm!rfn severe
Trojan:NPM/Multiverze!rfn severe
Trojan:O97M/DDownloader!rfn severe
Trojan:PDF/Phish!rfn severe
Trojan:PDF/Ursnif!rfn severe
Trojan:PowerShell/Runner.GP!MTB severe
Trojan:PyPI/Stealer.SA severe
Trojan:Python/Malgent!MSR severe
Trojan:Python/Multiverze!rfn severe
Trojan:Script/Multiverze!rfn severe
Trojan:VBS/Emotet!rfn severe
Trojan:VBS/Pterodo!rfn severe
Trojan:VBS/Remcos!rfn severe
Trojan:Win32/Acll!rfn severe
Trojan:Win32/Alevaul!rfn severe
Trojan:Win32/Amadey!rfn severe
Trojan:Win32/AutoitInject severe
Trojan:Win32/AutoitInject.SPB!MTB severe
Trojan:Win32/BadJoke!rfn severe
Trojan:Win32/Casdet!rfn severe
Trojan:Win32/CerberCrypt!rfn severe
Trojan:Win32/CoreWarrior!rfn severe
Trojan:Win32/CoreWarrior.DA!MTB severe
Trojan:Win32/DllInject!rfn severe
Trojan:Win32/Dridex!rfn severe
Trojan:Win32/DriverLoader!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Etset!rfn severe
Trojan:Win32/Farfli!rfn severe
Trojan:Win32/FileCoder!rfn severe
Trojan:Win32/Floxif!rfn severe
Trojan:Win32/FormBook!rfn severe
Trojan:Win32/fragtor!rfn severe
Trojan:Win32/Glupteba!rfn severe
Trojan:Win32/Gozi!rfn severe
Trojan:Win32/Gracing!rfn severe
Trojan:Win32/Graftor!rfn severe
Trojan:Win32/Jaik!MTB severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Krap!rfn severe
Trojan:Win32/Lactrodectus!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malex!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/Malgent!rfn severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Meterpreter!rfn severe
Trojan:Win32/Mikey!rfn severe
Trojan:Win32/MyDoom!rfn severe
Trojan:Win32/MyloBot!rfn severe
Trojan:Win32/NabucurObfs!rfn severe
Trojan:Win32/Neoreblamy!MTB severe
Trojan:Win32/PlugX!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Posilod!rfn severe
Trojan:Win32/Primarypass!rfn severe
Trojan:Win32/Prometei!rfn severe
Trojan:Win32/Qakbot!rfn severe
Trojan:Win32/Qbot!rfn severe
Trojan:Win32/Qwexlafiba!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Rozena!rfn severe
Trojan:Win32/SalatStealer!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Skeeyah.A!MTB severe
Trojan:Win32/Stealer!AMTB severe
Trojan:Win32/Supma.A severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/Trickler!rfn severe
Trojan:Win32/Upatre!rfn severe
Trojan:Win32/ValleyRat.AAL!AMTB severe
Trojan:Win32/Vilsel!rfn severe
Trojan:Win32/WinLNK!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win32/Znyonm!rfn severe
Trojan:Win32/Zusy!rfn severe
Trojan:Win64/AcrStealer!MTB severe
Trojan:Win64/AcrStealer!rfn severe
Trojan:Win64/BruteRatel!rfn severe
Trojan:Win64/ClipBanker!rfn severe
Trojan:Win64/CobaltStrike!MTB severe
Trojan:Win64/CobaltStrike!rfn severe
Trojan:Win64/CoinMiner!MTB severe
Trojan:Win64/CryptInject!rfn severe
Trojan:Win64/Dacic!rfn severe
Trojan:Win64/Diskcoder!MTB severe
Trojan:Win64/DllHijack!rfn severe
Trojan:Win64/Emotetcrypt!rfn severe
Trojan:Win64/EmotetPacker!rfn severe
Trojan:Win64/IcedID!rfn severe
Trojan:Win64/KillAv!rfn severe
Trojan:Win64/Latrodectus!rfn severe
Trojan:Win64/Lazy!MTB severe
Trojan:Win64/Malgent!MSR severe
Trojan:Win64/Mikey!rfn severe
Trojan:Win64/Oyster!rfn severe
Trojan:Win64/RanPacker!rfn severe
Trojan:Win64/Resmus!rfn severe
Trojan:Win64/RomCom!rfn severe
Trojan:Win64/ShellcodeInject.GLN!MTB severe
Trojan:Win64/Splinter!rfn severe
Trojan:Win64/Tedy!MTB severe
Trojan:Win64/Tedy.PAF!MTB severe
Trojan:Win64/TurtleLoader!rfn severe
Trojan:Win64/VallyRAT!rfn severe
Trojan:Win64/XMRig.PA!MTB severe
Trojan:Win64/Yogi!MTB severe
Trojan:Win64/Zusy!MTB severe
TrojanDownloader:BAT/QakBotLoader!rfn severe
TrojanDownloader:JS/Emotet!rfn severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:O97M/Emotet!rfn severe
TrojanDownloader:PowerShell/Malgent!MSR severe
TrojanDropper:AndroidOS/SAgent!rfn severe
TrojanDropper:JS/ModiLoader!MSR severe
TrojanDropper:PowerShell/LitterDrifter!rfn severe
VirTool:INF/Autorun!rfn severe
VirTool:MSIL/Aikaantivm!rfn severe
VirTool:Win32/Autorun!rfn severe
VirTool:Win32/Obfuscator!rfn severe
Virus:Win32/Expiro!MTB severe
Virus:Win64/Expiro!MTB severe
VulnerableDriver:Win64/TrueSight!AMTB severe
Worm:Win32/Allaple!rfn severe
Worm:Win32/AutoRun!rfn severe
Worm:Win32/Wenper!rfn severe