Change logs for security intelligence update version 1.421.365.0

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

11/19/2024 6:31:30 AM

Added threat detections

Name	Severity
Trojan:JS/Powdow!MSR	severe
Trojan:Win32/GuLoader.KGGV	severe
Trojan:Win32/PoshC2.C	severe
Trojan:Win64/CryptInject.CFN!MTB	severe
TrojanDownloader:MSIL/Quasar!MSR	severe

Updated threat detections

Name	Severity
Backdoor:Win32/Multiverze	severe
Behavior:Win32/GenCodeInjector.F	severe
Behavior:Win32/Mamadut.CC	severe
BrowserModifier:Win32/Qiwmonk	high
BrowserModifier:Win32/Xeelyak	high
HackTool:Win32/Keygen	high
HackTool:Win32/Mimikatz!MSR	high
Joke:VBS/Trier.A	moderate
Misleading:Win32/Lodi	high
Program:AndroidOS/Multiverze	high
Spyware:Win32/Multiverze	high
Trojan:JS/StarChop.B	severe
Trojan:MSIL/XWormRAT.A!MTB	severe
Trojan:O97M/Malgent!MSR	severe
Trojan:Python/Multiverze	severe
Trojan:Script/Multiverze	severe
Trojan:Win32/Amadey!MSR	severe
Trojan:Win32/Azorult	severe
Trojan:Win32/GuLoader.RVCY!MTB	severe
Trojan:Win32/Leonem	severe
Trojan:Win32/LummaStealer!MSR	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/MalLoader!rfn	severe
Trojan:Win32/Multiverze	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win64/CryptInject!MSR	severe
Trojan:Win64/Malgent!MSR	severe
TrojanDownloader:O97M/Emotet.PKCL	severe
TrojanDownloader:O97M/Emotet.PKCU	severe
TrojanDownloader:O97M/Emotet.PKCV	severe
TrojanDownloader:O97M/EncDoc.KFVU	severe
TrojanDownloader:O97M/EncDoc.MWOS	severe