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Change logs for security intelligence update version 1.459.631.0

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

10/9/2026 12:58:53 AM

Added threat detections

Name Severity
HackTool:MSIL/Elevate!rfn high
Trojan:BAT/FuzzedTank.E!dha severe
Trojan:BAT/Loader!AMTB severe
Trojan:JS/ObfuscatedLoader!AMTB severe
Trojan:MSIL/ReverseShell.A!MTB severe
Trojan:MSIL/ShelbyLoader.AB!MTB severe
Trojan:PDF/Phish.BR!atmn severe
Trojan:PDF/Phish.BS!atmn severe
Trojan:SH/Psychedelic.G!MTB severe
Trojan:Win64/Coinminer.SJ!AMTB severe
Trojan:Win64/Cornflake.CF!MTB severe
Trojan:Win64/Disco.B!MTB severe
TrojanDropper:Win64/RevStealer!MTB severe

Updated threat detections

Name Severity
Adware:MacOS/Multiverze!rfn high
Adware:Win32/Tnega high
Backdoor:Linux/Mirai.B severe
Backdoor:Linux/Multiverze severe
Backdoor:Linux/Multiverze!rfn severe
Backdoor:Win32/Coroxy!rfn severe
Backdoor:Win32/Farfli!rfn severe
Backdoor:Win32/Zegost.GP!MTB severe
Backdoor:Win64/PortStarter!rfn severe
Backdoor:Win64/Supper!rfn severe
HackTool:Win32/crack high
HackTool:Win32/DefenderControl!MSR high
HackTool:Win64/PSWDump!rfn high
Program:Script/Multiverze!rfn high
PWS:Win32/Stealer!rfn severe
Ransom:Linux/BlackSuit!rfn severe
Ransom:Linux/GunraCrypt!rfn severe
Ransom:Win32/Clop!rfn severe
Ransom:Win32/ContiCrypt!rfn severe
Ransom:Win32/Play!rfn severe
Ransom:Win32/Rapidstop!rfn severe
Ransom:Win32/Royal!rfn severe
Ransom:Win32/Trigona!rfn severe
Ransom:Win64/Akira!rfn severe
Ransom:Win64/Filecoder.A!MTB severe
Spyware:AndroidOS/Multiverze!rfn high
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:AndroidOS/BTMOBRat!rfn severe
Trojan:BAT/IcedID!rfn severe
Trojan:BAT/KillAV!rfn severe
Trojan:BAT/Qakbot!rfn severe
Trojan:HTML/IcedID!rfn severe
Trojan:HTML/Pterodo!rfn severe
Trojan:HTML/Qakbot!rfn severe
Trojan:JS/Latrodectus!rfn severe
Trojan:JS/Obfuse!rfn severe
Trojan:JS/Phish!rfn severe
Trojan:JS/PureLogsStealer!rfn severe
Trojan:JS/Ursnif!rfn severe
Trojan:JS/Ursnif.ST!MTB severe
Trojan:Linux/CoinMiner!rfn severe
Trojan:Linux/Melofee!AMTB severe
Trojan:Linux/Mirai.Z!MTB severe
Trojan:Linux/Multiverze!rfn severe
Trojan:MacOS/Multiverze!rfn severe
Trojan:MSIL/AgentTesla!rfn severe
Trojan:MSIL/AmsiBypass!rfn severe
Trojan:MSIL/BazaarLoader!rfn severe
Trojan:MSIL/CoinMiner!rfn severe
Trojan:MSIL/Dcstl!rfn severe
Trojan:O97M/DDownloader!rfn severe
Trojan:PDF/Phish!rfn severe
Trojan:PDF/Ursinf!rfn severe
Trojan:PowerShell/Pterodo!rfn severe
Trojan:PowerShell/QakBot!rfn severe
Trojan:PowerShell/Runner.GP!MTB severe
Trojan:Python/Multiverze!rfn severe
Trojan:Script/Metasploit!AMTB severe
Trojan:Script/Multiverze!rfn severe
Trojan:Script/Wacatac severe
Trojan:VBS/Emotet!rfn severe
Trojan:VBS/IcedID!rfn severe
Trojan:VBS/Obfuse!rfn severe
Trojan:VBS/Pterodo!rfn severe
Trojan:VBS/Qakbot!rfn severe
Trojan:Win32/Amadey!rfn severe
Trojan:Win32/AutoitShellInj!rfn severe
Trojan:Win32/Carbanak!rfn severe
Trojan:Win32/Casdet!rfn severe
Trojan:Win32/Delf!rfn severe
Trojan:Win32/DllInject!rfn severe
Trojan:Win32/Dynamer!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Fauppod!rfn severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/KoiLoader!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/Malgent!MTB severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Oyster!rfn severe
Trojan:Win32/PlugX!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Primarypass!rfn severe
Trojan:Win32/Pterodo!rfn severe
Trojan:Win32/Qakbot!rfn severe
Trojan:Win32/Qbot!rfn severe
Trojan:Win32/Qwexlafiba!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Remcos!rfn severe
Trojan:Win32/Rozena!rfn severe
Trojan:Win32/SalatStealer.SMX!MTB severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Solarmarker!rfn severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/SystemBC!rfn severe
Trojan:Win32/Tiggre!rfn severe
Trojan:Win32/Trickbot!rfn severe
Trojan:Win32/WinLNK!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win32/Znyonm!rfn severe
Trojan:Win64/BLackWidow!rfn severe
Trojan:Win64/ClipBanker.NZB!MTB severe
Trojan:Win64/CryptInject!rfn severe
Trojan:Win64/DllHijack!rfn severe
Trojan:Win64/Donut!MTB severe
Trojan:Win64/EmotetPacker!rfn severe
Trojan:Win64/IcedID!rfn severe
Trojan:Win64/KillAv!rfn severe
Trojan:Win64/KillAv.LR!MTB severe
Trojan:Win64/Maloder!rfn severe
Trojan:Win64/NightHawk!rfn severe
Trojan:Win64/Nuitka!rfn severe
Trojan:Win64/Oyster!rfn severe
Trojan:Win64/Remus!MTB severe
Trojan:Win64/Resmus!rfn severe
Trojan:Win64/Resmus.HM!MTB severe
Trojan:Win64/RomCom!rfn severe
Trojan:Win64/Sheheq!rfn severe
Trojan:Win64/ShellLoader.YX!MTB severe
Trojan:Win64/Tedy!MTB severe
Trojan:Win64/Tedy!rfn severe
Trojan:Win64/Tedy.B!MTB severe
Trojan:Win64/Vidar.GVX!MTB severe
Trojan:Win64/Yogi.C!MTB severe
Trojan:Win64/Zusy!MTB severe
TrojanDownloader:BAT/QakBotLoader!rfn severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:O97M/Emotet!rfn severe
TrojanDownloader:O97M/Ursnif!rfn severe
TrojanDownloader:PowerShell/Obfuse!rfn severe
TrojanDownloader:Win32/ShortSeek!rfn severe
TrojanDropper:Win64/KillAV.GB!MTB severe
VirTool:MSIL/Sharpexfil!rfn severe
VirTool:Win32/AmsiTamper!rfn severe
Worm:Win32/Citeary!rfn severe
Worm:Win32/Gamarue!rfn severe