Change logs for security intelligence update version 1.403.1266.0

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

12/28/2023 2:40:54 PM

Added threat detections

Name	Severity
Backdoor:MSIL/DCRat.L!MTB	severe
Backdoor:Win32/Xyligan!pz	severe
HackTool:Win64/ReverseSSH!MSR	high
Ransom:Win32/MedusaLocker.PC!MTB	severe
Trojan:HTML/Pikabot.RDB!MTB	severe
Trojan:MSIL/Amadey.RDSA!MTB	severe
Trojan:MSIL/PureCrypter.RDSA!MTB	severe
Trojan:PDF/Phish.HFC!MTB	severe
Trojan:PDF/Phish.MZY!MTB	severe
Trojan:PDF/Phish.NSF!MTB	severe
Trojan:VBS/Obfuse.RVAA!MTB	severe
Trojan:Win32/DarkComet.ADR!MTB	severe
Trojan:Win32/LummaStealer.CCFX!MTB	severe
Trojan:Win32/LummaStealer.MJ!MTB	severe
Trojan:Win32/Qukart!pz	severe
Trojan:Win32/Remcos.RVBD!MTB	severe
Trojan:Win32/Sefnit!pz	severe
Trojan:Win32/StealC.MZX!MTB	severe
Trojan:Win32/StealerC.B!MTB	severe
Trojan:Win32/WhisperGate.GAN!MTB	severe
Trojan:Win64/Lazy.CEWQ!MTB	severe
Trojan:Win64/PyDisco!MTB	severe
Trojan:Win64/zgRAT.A!MTB	severe
TrojanDownloader:Win32/Obvod!pz	severe
TrojanDownloader:Win32/Penguish.SA!MTB	severe
VirTool:Win32/Backstab.B	severe
VirTool:Win64/Backstab.A	severe

Updated threat detections

Name	Severity
Adware:Win32/KuaiZip.SP!MSR	high
Adware:Win32/Qjwmonkey	high
Adware:Win32/Qjwmonkey.A!MSR	high
Backdoor:MSIL/Bladabindi!pz	severe
Backdoor:MSIL/Nanocore!atmn	severe
Backdoor:Win32/Berbew!pz	severe
Backdoor:Win32/Zegost!pz	severe
BrowserModifier:MSIL/MediaArena!MTB	high
FriendlyFiles	low
HackTool:Win32/AutoKMS	high
HackTool:Win32/Crack!MSR	high
HackTool:Win32/Wpakill!pz	high
PWS:Win32/Ldpinch!pz	severe
PWS:Win32/Lolyda!pz	severe
PWS:Win32/OnLineGames!pz	severe
PWS:Win32/QQThief!pz	severe
PWS:Win32/Simda!pz	severe
Ransom:MacOS/FileCoder	severe
Ransom:Win32/GandCrab!pz	severe
Trojan:AndroidOS/Spynote.I	severe
Trojan:HTML/Phish!pz	severe
Trojan:JS/Obfuse.RVBA!MTB	severe
Trojan:Linux/StealthWorker!pz	severe
Trojan:MSIL/AgentTesla.NBL!MTB	severe
Trojan:MSIL/CryptInject!MTB	severe
Trojan:MSIL/DarkComet.ADK!MTB	severe
Trojan:MSIL/Lazy.NBL!MTB	severe
Trojan:MSIL/LummaStealer!MTB	severe
Trojan:MSIL/RedLine!MTB	severe
Trojan:MSIL/Stealerc!MTB	severe
Trojan:PowerShell/Malgent!MSR	severe
Trojan:VBS/Nemucod.RP!MTB	severe
Trojan:VBS/Obfuse.MSR	severe
Trojan:VBS/Obfuse.RA!MTB	severe
Trojan:VBS/Obfuse.RVAF!MTB	severe
Trojan:Win32/Amadey!MTB	severe
Trojan:Win32/Bumat!rfn	severe
Trojan:Win32/Cerber!pz	severe
Trojan:Win32/ClipBanker!MTB	severe
Trojan:Win32/Crysteb!pz	severe
Trojan:Win32/DefenseEvasion!BV	severe
Trojan:Win32/Dynamer!pz	severe
Trojan:Win32/FakeFolder!pz	severe
Trojan:Win32/Fareit!pz	severe
Trojan:Win32/Farfli!pz	severe
Trojan:Win32/Gandcrab!pz	severe
Trojan:Win32/GandCrypt!pz	severe
Trojan:Win32/Generic	severe
Trojan:Win32/Hupigon!pz	severe
Trojan:Win32/Injector!MTB	severe
Trojan:Win32/Koutodoor!pz	severe
Trojan:Win32/Leonem	severe
Trojan:Win32/Malagent!MSR	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Meterpreter!pz	severe
Trojan:Win32/Myma!pz	severe
Trojan:Win32/Orsam!rfn	severe
Trojan:Win32/Razy.NR!MTB	severe
Trojan:Win32/Redline!MTB	severe
Trojan:Win32/RedMem	severe
Trojan:Win32/Remcos.SS!MTB	severe
Trojan:Win32/RiseProStealer!MTB	severe
Trojan:Win32/Smokeloader.GAM!MTB	severe
Trojan:Win32/Tiggre	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Urelas!pz	severe
Trojan:Win32/WinLNK!MSR	severe
Trojan:Win32/Xiaoba!pz	severe
Trojan:Win32/Zbot!pz	severe
Trojan:Win64/AveMariaRat!MTB	severe
Trojan:Win64/CobaltStrike!MTB	severe
Trojan:Win64/CoinMiner!MTB	severe
Trojan:Win64/Cymulate!MTB	severe
Trojan:Win64/ExcelInjector!MTB	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Redcap!MTB	severe
Trojan:Win64/RomCom.MP!MTB	severe
Trojan:Win64/Xmrig!MTB	severe
TrojanDownloader:O97M/EncDoc.YAE!MTB	severe
TrojanDownloader:O97M/Obfuse.HG	severe
TrojanDownloader:Win32/Agent!pz	severe
TrojanDownloader:Win32/Esaprof!pz	severe
TrojanDownloader:Win32/Rarcon!pz	severe
TrojanDownloader:Win32/Renos!pz	severe
TrojanDownloader:Win32/Unruy!pz	severe
TrojanDownloader:Win32/Zbot!pz	severe
TrojanDropper:AutoIt/Pistolar!pz	severe
Worm:Win32/AutoRun!pz	severe
Worm:Win32/Bruhorn!pz	severe
Worm:Win32/Gamarue!pz	severe
Worm:Win32/Hamweq!pz	severe
Worm:Win32/Ludbaruma!pz	severe
Worm:Win32/Vobfus!pz	severe