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Change logs for security intelligence update version 1.457.125.0

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

8/12/2026 11:29:19 AM

Added threat detections

Name Severity
Exploit:Win32/NghtMrShldBrk.BB severe
Trojan:JS/SnakeKeylogger.SJ!MTB severe
Trojan:MSIL/Formbook.YYL!MTB severe
Trojan:MSIL/SnakeKeyLogger.SRW!MTB severe
Trojan:Win64/Jaik.VDC!MTB severe
VirTool:Win64/Reflenesz.A severe
VirTool:Win64/Sentinesz.A severe
Worm:Win32/Gamarue.GXU!MTB severe

Updated threat detections

Name Severity
Adware:Win32/SpecialSearchOffer high
Adware:Win32/Tnega high
Backdoor:MSIL/AsyncRAT!rfn severe
HackTool:Win32/Crack!MTB high
HackTool:Win32/DongleHack high
HackTool:Win32/Malgent!MSR high
MonitoringTool:Win32/TektonIt severe
Ransom:MSIL/Filecoder!rfn severe
Ransom:Win32/Basta!rfn severe
Ransom:Win32/Bitman.SN!MTB severe
Ransom:Win32/BlackCat!rfn severe
Ransom:Win32/Mole.SN!MTB severe
Ransom:Win32/Qilinloader!rfn severe
Ransom:Win64/Shinyspider!rfn severe
Trojan:HTML/Phish.DG!MTB severe
Trojan:HTML/Qakbot!rfn severe
Trojan:HTML/Qbot!rfn severe
Trojan:JS/AgentTesla.SM!MTB severe
Trojan:MSIL/LummaC!rfn severe
Trojan:MSIL/Zilla.AZL!MTB severe
Trojan:PDF/Phish!rfn severe
Trojan:Script/Multiverze!rfn severe
Trojan:VBS/Obfuse!rfn severe
Trojan:VBS/Pterodo!rfn severe
Trojan:Win32/BatTamper!rfn severe
Trojan:Win32/Blackmoon!rfn severe
Trojan:Win32/Cerber!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/MalLoader!rfn severe
Trojan:Win32/Masson.A!ac severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/OysterLoader!rfn severe
Trojan:Win32/PhishLeonem!rfn severe
Trojan:Win32/Pikabot!rfn severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Predator!rfn severe
Trojan:Win32/Qakbot!rfn severe
Trojan:Win32/Qwexlafiba!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/StealIt!AMTB severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/XWorm!MSR severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win64/CoinMiner!MTB severe
Trojan:Win64/CryptInject!rfn severe
Trojan:Win64/Dacic!rfn severe
Trojan:Win64/DLLHijack.AXXB!MTB severe
Trojan:Win64/Embargo!rfn severe
Trojan:Win64/Emotetcrypt!rfn severe
Trojan:Win64/Latrodectus!rfn severe
Trojan:Win64/Oyster!rfn severe
Trojan:Win64/OysterLoader!rfn severe
Trojan:Win64/ShellcodeRunner!rfn severe
Trojan:Win64/Tedy!MTB severe
TrojanDownloader:BAT/QakBotLoader!rfn severe
VirTool:PowerShell/MaleficAms severe
VirTool:Win32/SuspCFProxyWeb.A severe
VirTool:Win64/Norelesz.A severe
VirTool:Win64/Scerpesz.A severe