Change logs for security intelligence update version 1.445.320.0

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

3/2/2026 4:44:40 PM

Added threat detections

Name	Severity
Backdoor:Win64/GoverKick.A!dha	severe
Trojan:MSIL/PureLogStealer.AKRB!MTB	severe
Trojan:MSIL/RatonRat.ARR!MTB	severe
Trojan:PowerShell/CobaltStrike.GVL!MTB	severe
Trojan:Win32/Androm.BAN!MTB	severe
Trojan:Win32/Sidewinder!MTB	severe
Trojan:Win64/Lazy.KR!MTB	severe
Trojan:Win64/Rhadamanthys.NSY!MTB	severe
Trojan:Win64/Rhadamanthys.NTS!MTB	severe
Trojan:Win64/Rhadamanthys.NUA!MTB	severe
Trojan:Win64/SwarmProfile.A!dha	severe
Trojan:Win64/Vidar.ET!MTB	severe
Trojan:Win64/Vidar.IR!MTB	severe

Updated threat detections

Name	Severity
Adware:Win32/OpenSUpdater	high
Backdoor:Linux/Mirai!rfn	severe
Backdoor:MSIL/AsyncRat!rfn	severe
Backdoor:MSIL/XWormRAT!rfn	severe
Backdoor:PHP/WebShell!MTB	severe
HackTool:Win32/crack	high
HackTool:Win64/Mimikatz!rfn	high
PWS:MSIL/RedLine.GG!MTB	severe
PWS:Win32/Fareit!rfn	severe
Ransom:Win32/LockbitCrypt!rfn	severe
Ransom:Win32/Qilin!rfn	severe
Ransom:Win32/Trigona!rfn	severe
Ransom:Win64/LockBit!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/Qakbot!rfn	severe
Trojan:HTML/Redirector.VVZ!MTB	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MacOS/Multiverze!rfn	severe
Trojan:MSIL/CoinMiner!rfn	severe
Trojan:MSIL/Zilla!MTB	severe
Trojan:Python/Multiverze!rfn	severe
Trojan:Script/Malgent!MSR	severe
Trojan:Script/Multiverze!rfn	severe
Trojan:Win32/BadJoke!MTB	severe
Trojan:Win32/Blacksuit!rfn	severe
Trojan:Win32/ClipBanker!rfn	severe
Trojan:Win32/CobaltStrike.RR!MTB	severe
Trojan:Win32/CoinMiner!MSR	severe
Trojan:Win32/DarkGate!rfn	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/Flystudio!MTB	severe
Trojan:Win32/GuLoader!rfn	severe
Trojan:Win32/Guloader.AV!MTB	severe
Trojan:Win32/GuLoader.RAM!MTB	severe
Trojan:Win32/GuLoader.RVW!MTB	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/Leonem	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/LummaStealer!MTB	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/Neoreblamy!MTB	severe
Trojan:Win32/Neoreblamy.NFL!MTB	severe
Trojan:Win32/Predator!rfn	severe
Trojan:Win32/Primarypass!rfn	severe
Trojan:Win32/Pypykatz!MTB	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/ShellcodeRunner!MTB	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tedy!MTB	severe
Trojan:Win32/Vindor!rfn	severe
Trojan:Win32/WinLNKRun!rfn	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win64/Barys!MTB	severe
Trojan:Win64/CobaltStrike!MTB	severe
Trojan:Win64/CobaltStrike!rfn	severe
Trojan:Win64/EmotetPacker!rfn	severe
Trojan:Win64/IcedID!rfn	severe
Trojan:Win64/Lazy!MTB	severe
Trojan:Win64/Midie!MTB	severe
Trojan:Win64/Tedy!MTB	severe
Trojan:Win64/TurtleLoader!rfn	severe
Trojan:Win64/Zusy!MTB	severe
TrojanDownloader:JS/Nemucod!MTB	severe
TrojanDownloader:O97M/Obfuse.AG!MTB	severe
TrojanDownloader:Win32/Tnega.RR!MTB	severe
TrojanDropper:Win32/Floxif!pz	severe
VirTool:PowerShell/Etiquee.A!MTB	severe
VirTool:Win32/Injector!rfn	severe
Worm:Win32/Gamarue!rfn	severe