Change logs for security intelligence update version 1.443.480.0

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

1/3/2026 4:32:00 AM

Added threat detections

Name	Severity
Behavior:Win64/BlipSlide.AA!sms	severe

Updated threat detections

Name	Severity
Backdoor:Java/Webshell	severe
Backdoor:Linux/Gafgyt.AY!xp	severe
Backdoor:Linux/Gafgyt.M!xp	severe
Backdoor:Perl/Small.B	severe
Backdoor:PHP/Webshell	severe
Backdoor:Win32/Androm.BQ!MTB	severe
Backdoor:Win32/Berbew.AA!MTB	severe
Behavior:Win32/Ransomware!CountT2	severe
Behavior:Win32/Ransomware!RemoteRansom.Dl	severe
Exploit:Linux/CVE-2024-3094.A	severe
Exploit:Linux/CVE-2024-3094.F	severe
HackTool:Win32/Patcher	high
HackTool:Win32/WNetWatcher!MTB	high
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:HTML/Qakbot!rfn	severe
Trojan:JS/AgentTesla.PA!MTB	severe
Trojan:JS/Pterodo!rfn	severe
Trojan:JS/QakbotLNK!rfn	severe
Trojan:MSIL/Lazy!rfn	severe
Trojan:O97M/DDownloader!rfn	severe
Trojan:PowerShell/Boxter.PGBP!MTB	severe
Trojan:Script/Malgent!MSR	severe
Trojan:Script/Multiverze	severe
Trojan:VBS/Pterodo!rfn	severe
Trojan:VBS/Qakbot!rfn	severe
Trojan:Win32/Alevaul!rfn	severe
Trojan:Win32/AutoitInject.AQGA!MTB	severe
Trojan:Win32/AutoitShellInj.EB!MTB	severe
Trojan:Win32/Copak.PGCP!MTB	severe
Trojan:Win32/CoreWarrior.DA!MTB	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Emotet.KDS!MTB	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Fareit.VB!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/Lazy!MTB	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/MalLoader!rfn	severe
Trojan:Win32/Masqrazelf!rfn	severe
Trojan:Win32/Occamy.C53	severe
Trojan:Win32/Otfrem.A!MTB	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Trickbot!rfn	severe
Trojan:Win32/Upatre.AMN!MTB	severe
Trojan:Win32/Vilsel.A!MTB	severe
Trojan:Win32/Vundo.AHC!MTB	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win64/CryptInject!rfn	severe
Trojan:Win64/ReflectiveLoader	severe
Trojan:Win64/SpyLoader!rfn	severe
Trojan:Win64/Xworm.ZBO!MTB	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:Win32/CHTong	severe
Worm:Win32/VB!rfn	severe