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Change logs for security intelligence update version 1.447.152.0

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

4/3/2026 9:42:11 PM

Added threat detections

Name Severity
Behavior:Win64/BlipSlide.AC!sms severe
PWS:Win64/CrystalX.C!MTB severe
Trojan:VBS/ChatGPTStealer!MTB severe
Trojan:Win64/BlipSlide.AC!dha severe
Trojan:Win64/BlipSlide.AC!dha!sms severe
Trojan:Win64/Tedy.LRE!MTB severe

Updated threat detections

Name Severity
Backdoor:PHP/C99shell.I severe
Backdoor:PHP/Webshell.PA severe
BrowserModifier:MSIL/MediaArena high
Exploit:Linux/EDB-40049.A!xp severe
Exploit:O97M/CVE-2025-53770.DA!ams severe
Exploit:Win32/Tudimons.A!dha severe
HackTool:Python/Impacket!MTB high
HackTool:Win32/AutoKMS!rfn high
HackTool:Win32/Keygen high
HackTool:Win32/Passview!MTB high
HackTool:Win32/Patcher high
HackTool:Win64/Mimikatz!rfn high
Joke:Win32/PopupPrank moderate
PWS:MSIL/Browsstl!rfn severe
Ransom:Linux/Ransomhub!rfn severe
Ransom:Win32/WarLock!rfn severe
Ransom:Win64/Akira!rfn severe
Ransom:Win64/LockBit!rfn severe
Trojan:AndroidOS/AVerseFalc!rfn severe
Trojan:HTML/Gamaredon!rfn severe
Trojan:HTML/Phish.D!AMTB severe
Trojan:HTML/Phish.SXK!MTB severe
Trojan:JS/QakbotLNK!rfn severe
Trojan:Linux/Multiverze!rfn severe
Trojan:MSIL/CoinMiner!rfn severe
Trojan:O97M/Phish!MSR severe
Trojan:Script/Malgent!MSR severe
Trojan:Script/Multiverze!rfn severe
Trojan:VBS/Malgent!MSR severe
Trojan:Win32/Agent!rfn severe
Trojan:Win32/Casdet!rfn severe
Trojan:Win32/CryptInject!rfn severe
Trojan:Win32/DllInject!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Eqtonex!bit severe
Trojan:Win32/GuLoader!rfn severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/Mamson.A!ac severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Supma.A severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/Tedy!MTB severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win64/BumbleBee!rfn severe
Trojan:Win64/CoinMiner!rfn severe
Trojan:Win64/CryptInject!rfn severe
Trojan:Win64/Emotet!rfn severe
Trojan:Win64/Emotetcrypt!rfn severe
Trojan:Win64/IcedID!rfn severe
Trojan:Win64/Oyster!rfn severe
Trojan:Win64/ReflectiveLoader severe
Trojan:Win64/SpyLoader!rfn severe
Trojan:Win64/Tedy!MTB severe
Trojan:Win64/Tnega!MTB severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:O97M/Emotet!rfn severe
TrojanDownloader:Win32/ShortSeek!rfn severe
TrojanDropper:Win32/Malgent!MSR severe
VirTool:Win32/CeeInject!rfn severe
Worm:Win32/Nuqel!rfn severe