Change logs for security intelligence update version 1.445.192.0

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

2/22/2026 12:33:28 PM

Added threat detections

Name	Severity
Behavior:Win32/SuspRegService.AM	severe
Behavior:Win32/SuspRegService.J	severe
Behavior:Win32/SuspRegService.MK	severe
Behavior:Win32/SuspRegService.NG	severe

Updated threat detections

Name	Severity
Adware:Win32/AdLoad	high
Adware:Win32/Tnega	high
Backdoor:Linux/Mirai!rfn	severe
Backdoor:MSIL/Bladabindi!rfn	severe
Backdoor:Win64/RomComLoader!rfn	severe
Behavior:Win32/SuspOffice.MK	severe
BrowserModifier:Win32/Shafmia	high
Exploit:O97M/CVE-2017-11882.A!MTB	severe
HackTool:Win32/CheatEngine	high
HackTool:Win32/crack	high
HackTool:Win32/Crack!MTB	high
HackTool:Win32/Keygen	high
Joke:Win32/PopupPrank	moderate
Misleading:Linux/Chisel.A!MTB	high
Misleading:Win32/Lodi	high
Misleading:Win32/Lodi!MSR	high
Ransom:Win32/ContiCrypt!rfn	severe
Ransom:Win32/GandCrab	severe
Ransom:Win32/Qilinloader!rfn	severe
Ransom:Win64/Akira!rfn	severe
Trojan:AndroidOS/AVerseFalc!rfn	severe
Trojan:BAT/Qakbot!rfn	severe
Trojan:HTML/Obfuse!rfn	severe
Trojan:JS/QakbotLNK!rfn	severe
Trojan:JS/Redirector.PH	severe
Trojan:JS/Ursnif!rfn	severe
Trojan:Linux/Multiverze!rfn	severe
Trojan:MSIL/AgentTesla!rfn	severe
Trojan:MSIL/AsyncRAT.ARR!MTB	severe
Trojan:MSIL/Jalapeno!rfn	severe
Trojan:MSIL/Malgent!MTB	severe
Trojan:MSIL/PureLogStealer!rfn	severe
Trojan:MSIL/Redline!rfn	severe
Trojan:PDF/Phish!rfn	severe
Trojan:PowerShell/QakBot!rfn	severe
Trojan:Script/Malgent!MSR	severe
Trojan:VBS/Qakbot!rfn	severe
Trojan:VBS/SmugVBS!rfn	severe
Trojan:Win32/BlackMoon	severe
Trojan:Win32/Bumat!rts	high
Trojan:Win32/Casdet!rfn	severe
Trojan:Win32/Ceevee	severe
Trojan:Win32/Cerbu	severe
Trojan:Win32/Convagent!MTB	severe
Trojan:Win32/Convagent!rfn	severe
Trojan:Win32/DllInject!rfn	severe
Trojan:Win32/Egairtigado!rfn	severe
Trojan:Win32/Eqtonapt.A!rfn	severe
Trojan:Win32/Etset!rfn	severe
Trojan:Win32/IcedIdLNK!rfn	severe
Trojan:Win32/Kepavll!rfn	severe
Trojan:Win32/Leonem!rfn	severe
Trojan:Win32/Malgent	severe
Trojan:Win32/Malgent!MSR	severe
Trojan:Win32/Malgent!MTB	severe
Trojan:Win32/Malgent!rfn	severe
Trojan:Win32/MereTam!rfn	severe
Trojan:Win32/Occamy.C1A	severe
Trojan:Win32/Oyester!rfn	severe
Trojan:Win32/PhishLeonem!rfn	severe
Trojan:Win32/Pomal!rfn	severe
Trojan:Win32/Primarypass!rfn	severe
Trojan:Win32/Qakbot!rfn	severe
Trojan:Win32/Remcos!MSR	severe
Trojan:Win32/Rugmi	severe
Trojan:Win32/Seheq!rfn	severe
Trojan:Win32/Skeeyah.A!MTB	severe
Trojan:Win32/Supma.A	severe
Trojan:Win32/Suschil!rfn	severe
Trojan:Win32/Tiggre!rfn	severe
Trojan:Win32/Vindor!rfn	severe
Trojan:Win32/WinLNK.DE!MTB	severe
Trojan:Win32/Yomal!rfn	severe
Trojan:Win32/Znyonm!rfn	severe
Trojan:Win64/BLackWidow!rfn	severe
Trojan:Win64/Emotet!rfn	severe
Trojan:Win64/EmotetPacker!rfn	severe
Trojan:Win64/Filecoder!rfn	severe
Trojan:Win64/Latrodectus!rfn	severe
Trojan:Win64/Malgent!MSR	severe
Trojan:Win64/Maloder!rfn	severe
Trojan:Win64/Meterpreter!rfn	severe
Trojan:Win64/Oyster!rfn	severe
Trojan:Win64/Rusdinjs.A	severe
Trojan:Win64/ZLoader!rfn	severe
TrojanDownloader:BAT/QakBotLoader!rfn	severe
TrojanDownloader:JS/Nemucod	severe
TrojanDownloader:JS/Qakbot!rfn	severe
TrojanDownloader:JS/Swabfex.P	severe
TrojanDownloader:O97M/Adnel	severe
TrojanDownloader:O97M/Emotet!rfn	severe
TrojanDownloader:O97M/EncDoc.BK!MTB	severe
TrojanDownloader:PDF/Qakbot!rfn	severe
TrojanDownloader:PowerShell/Obfuse!rfn	severe
TrojanDownloader:SWF/Esaprof!rfn	severe
TrojanDownloader:Win32/FakeIE.B	severe
VirTool:MSIL/Subti!rfn	severe
VirTool:WinNT/Rootkitdrv!rfn	severe
Worm:Win32/Citeary!rfn	severe
Worm:Win32/Crastic!rfn	severe
Worm:Win32/Mofksys!rfn	severe