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Change logs for security intelligence update version 1.455.487.0

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

8/3/2026 1:01:03 PM

Added threat detections

Name Severity
Trojan:MSIL/Noon.ABFG!MTB severe
Trojan:Win64/Stealer.SLBQ!MTB severe

Updated threat detections

Name Severity
Adware:Win32/OpenSUpdater high
DDoS:Win32/Nitol!rfn severe
Exploit:Win32/Tudimons.A!dha severe
HackTool:PowerShell/DumpDBCreds!rfn high
HackTool:Win64/Mikatz!rfn high
Ransom:Linux/CerberRansom!rfn severe
Ransom:MSIL/Loki!MTB severe
Ransom:Win32/Babuk!rfn severe
Ransom:Win32/Basta!rfn severe
Ransom:Win32/BlackCat!rfn severe
Ransom:Win32/Clop!rfn severe
Ransom:Win32/LockBit!rfn severe
Ransom:Win32/Muldrop!rfn severe
Ransom:Win64/Akira!rfn severe
Ransom:Win64/Ransomhub!rfn severe
Trojan:BAT/Qakbot!rfn severe
Trojan:HTML/Pterodo!rfn severe
Trojan:HTML/Qakbot!rfn severe
Trojan:Java/SAgnt!MSR severe
Trojan:JS/Pterodo!rfn severe
Trojan:JS/QakbotLNK!rfn severe
Trojan:Linux/CoinMiner.C12 severe
Trojan:Linux/Multiverze!rfn severe
Trojan:O97M/DDownloader!rfn severe
Trojan:VBS/Qakbot!rfn severe
Trojan:Win32/Alevaul!rfn severe
Trojan:Win32/Egairtigado!rfn severe
Trojan:Win32/FileCoder!rfn severe
Trojan:Win32/IcedIDLNK!rfn severe
Trojan:Win32/Kepavll!rfn severe
Trojan:Win32/Leonem!rfn severe
Trojan:Win32/Malgent!MSR severe
Trojan:Win32/MereTam!rfn severe
Trojan:Win32/Neoreblamy!MTB severe
Trojan:Win32/Occamy.C8D severe
Trojan:Win32/Pomal!rfn severe
Trojan:Win32/Qwexlafiba!rfn severe
Trojan:Win32/Ravartar!rfn severe
Trojan:Win32/Seheq!rfn severe
Trojan:Win32/Smokeloader!rfn severe
Trojan:Win32/Stealer!rfn severe
Trojan:Win32/Suschil!rfn severe
Trojan:Win32/Wacatac severe
Trojan:Win32/WinLNK!rfn severe
Trojan:Win32/Yomal!rfn severe
Trojan:Win64/BrutRatel!rfn severe
Trojan:Win64/BumbleBee!rfn severe
Trojan:Win64/CryptInject!rfn severe
Trojan:Win64/Emotet!rfn severe
Trojan:Win64/FaceStealer!MTB severe
Trojan:Win64/SalatStealer!MTB severe
Trojan:Win64/Tedy!MTB severe
TrojanDownloader:BAT/QakBotLoader!rfn severe
TrojanDownloader:JS/Qakbot!rfn severe
TrojanDownloader:O97M/Emotet!rfn severe
VirTool:PowerShell/MaleficAms severe
Worm:Win32/Brontok!rfn severe
Worm:Win32/Citeary!rfn severe