Change log for definition version 1.279.1478.0 RSS feed icon

This page lists what has changed in the most recent definitions update for Windows Defender Antivirus and Microsoft Security Essentials.

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The following tables list the new and updated definitions for the version you select here. You can choose from the 20 latest updates, and the most recent update is shown by default:

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Definition available date: Nov 09,2018 06:47 AM UTC

New definitions


No new threats have been identified in this definition update.

Updated definitions

HackTool:Win32/AutoKMShigh
HackTool:Win32/BrowserPassviewhigh
HackTool:Win32/WpeProhigh
SoftwareBundler:Win32/Dlhelperhigh
Backdoor:Linux/Mirai!rfnsevere
Backdoor:MacOS_X/Flashback!rfnsevere
Backdoor:MSIL/Bladabindi!rfnsevere
Backdoor:MSIL/Boilod.Asevere
Backdoor:MSIL/Noancooe.Asevere
Backdoor:MSIL/Noancooe.Bsevere
Backdoor:MSIL/Noancooe.Csevere
Backdoor:MSIL/Orcus!rfnsevere
Backdoor:Win32/CoinMiner.Asevere
Backdoor:Win32/Escad.F!dhasevere
Backdoor:Win32/Gaertob.Asevere
Backdoor:Win32/Hupigon!rfnsevere
Backdoor:Win32/Kelihos!rfnsevere
Backdoor:Win32/Kocegsevere
Backdoor:Win32/Qakbot!rfnsevere
Backdoor:Win32/Qakbot.Tsevere
Backdoor:Win32/Serekisevere
Backdoor:Win32/Simda.ATsevere
Backdoor:Win32/Tofsee!rfnsevere
Backdoor:Win32/Xiclog.Asevere
Backdoor:Win32/Xtrat.ACsevere
Backdoor:Win32/Zegostsevere
Backdoor:Win32/Zegost!rfnsevere
Backdoor:Win64/Drixed!rfnsevere
Exploit:JS/Pdfjsc!rfnsevere
Exploit:JS/ShellCode!rfnsevere
Exploit:O97M/CVE-2017-11882!rfnsevere
Exploit:Win32/CVE-2012-0158!rfnsevere
Exploit:Win32/Pdfjsc!rfnsevere
Program:Win32/Unwaders.C!mlsevere
PWS:AutoIt/Passup!rfnsevere
PWS:Win32/Bzub!rfnsevere
PWS:Win32/Fareitsevere
PWS:Win32/Lmirsevere
PWS:Win32/Mofksys!rfnsevere
PWS:Win32/Primarypass.Asevere
Ransom:Win32/GandCrab!rfnsevere
Ransom:Win32/GandCrab.AEsevere
Ransom:Win32/GandCrab.Esevere
Ransom:Win32/GandCrab.MCTQXsevere
Ransom:Win32/Genasomsevere
Ransom:Win32/Somhoveran!rfnsevere
Trojan:JS/HideLink!rfnsevere
Trojan:JS/Iframe!rfnsevere
Trojan:JS/Iframeinject!rfnsevere
Trojan:JS/Redirector!rfnsevere
Trojan:MSIL/Imminent.A!MTBsevere
Trojan:MSIL/Ribaj!rfnsevere
Trojan:MSIL/Starter.Fsevere
Trojan:MSIL/Upadter.Asevere
Trojan:MSIL/Wirzemro.Bsevere
Trojan:O97M/Obfuse!rfnsevere
Trojan:O97M/Obfuse.BDsevere
Trojan:O97M/PowCript.Asevere
Trojan:PowerShell/Leivion.Qsevere
Trojan:Win32/Adload!rfnsevere
Trojan:Win32/Alureonsevere
Trojan:Win32/Avkill.Esevere
Trojan:Win32/Bancteian!rfnsevere
Trojan:Win32/Bancteian.Bsevere
Trojan:Win32/Bluteal!rfnsevere
Trojan:Win32/Casdet!rfnsevere
Trojan:Win32/CoinMiner!rfnsevere
Trojan:Win32/CoinMiner.AC!bitsevere
Trojan:Win32/CoinMiner.ATsevere
Trojan:Win32/CoinMiner.DAsevere
Trojan:Win32/CryptInject!rfnsevere
Trojan:Win32/Dacic.A!rfnsevere
Trojan:Win32/Delpem!rfnsevere
Trojan:Win32/Dibizor!rfnsevere
Trojan:Win32/Dynamer!acsevere
Trojan:Win32/Dynamer!rfnsevere
Trojan:Win32/Emotet!rfnsevere
Trojan:Win32/Emotet.AC!bitsevere
Trojan:Win32/Eqtonex!rfnsevere
Trojan:Win32/Floxif!rfnsevere
Trojan:Win32/Gandcrab.AFsevere
Trojan:Win32/Genasep.Asevere
Trojan:Win32/Iniriror.A!dllsevere
Trojan:Win32/Malexsevere
Trojan:Win32/MereTam.Asevere
Trojan:Win32/Meterpretersevere
Trojan:Win32/Meterpreter.Psevere
Trojan:Win32/Mofksys!rfnsevere
Trojan:Win32/Multsarch.Msevere
Trojan:Win32/Occamy.Csevere
Trojan:Win32/Pynamer.A!acsevere
Trojan:Win32/Pynamer.B!acsevere
Trojan:Win32/Qhost!rfnsevere
Trojan:Win32/Ramnit!rfnsevere
Trojan:Win32/Rifbu!rfnsevere
Trojan:Win32/Salgorea!rfnsevere
Trojan:Win32/Salgorea.C!dhasevere
Trojan:Win32/Selfdel!rfnsevere
Trojan:Win32/Simbot!rfnsevere
Trojan:Win32/Skeeyah.A!rfnsevere
Trojan:Win32/Skeeyah.B!rfnsevere
Trojan:Win32/Sonoko.A!mssevere
Trojan:Win32/Spawnerx.Fsevere
Trojan:Win32/Swrort.Asevere
Trojan:Win32/Tepely!rfnsevere
Trojan:Win32/Tiggre!rfnsevere
Trojan:Win32/Urelas!rfnsevere
Trojan:Win32/Vibem!rfnsevere
Trojan:Win32/Vindor!rfnsevere
Trojan:Win32/Zonsterarch.BWsevere
Trojan:Win64/Alureon!rfnsevere
TrojanClicker:HTML/Iframe!rfnsevere
TrojanClicker:JS/Faceliker!rfnsevere
TrojanClicker:Win32/Spackit!rfnsevere
TrojanDownloader:JS/FakejQuery!rfnsevere
TrojanDownloader:JS/Inor!rfnsevere
TrojanDownloader:JS/Nemucod!rfnsevere
TrojanDownloader:JS/Psyme!rfnsevere
TrojanDownloader:JS/Sfiseu!amssevere
TrojanDownloader:O97M/Dornoe.A!amssevere
TrojanDownloader:SWF/Esaprof.Asevere
TrojanDownloader:Win32/Agentsmall.Fsevere
TrojanDownloader:Win32/Banload!rfnsevere
TrojanDownloader:Win32/Chasendi.Asevere
TrojanDownloader:Win32/Nymaim!rfnsevere
TrojanDownloader:Win32/Renossevere
TrojanDownloader:Win32/Sinresby.Bsevere
TrojanDownloader:Win32/Tinub.Asevere
TrojanDropper:Win32/Dinwod!rfnsevere
TrojanDropper:Win32/Gepyssevere
TrojanDropper:Win32/Gepys!rfnsevere
TrojanProxy:Win32/Bunitu.Q!bitsevere
TrojanSpy:MSIL/Golroted.Bsevere
TrojanSpy:MSIL/Keylog.Bsevere
TrojanSpy:Win32/Banker!rfnsevere
VirTool:JS/Iframeinject!rfnsevere
VirTool:JS/ShellCode!rfnsevere
VirTool:MSIL/Injectorsevere
VirTool:MSIL/Obfuscator.ATsevere
VirTool:MSIL/Subti.Nsevere
VirTool:Win32/AutInject.BOsevere
VirTool:Win32/CeeInjectsevere
VirTool:Win32/DelfInjectsevere
VirTool:Win32/Stekct!rfnsevere
VirTool:Win32/VBInjectsevere
VirTool:Win32/Vibem!rfnsevere
Worm:MSIL/Necast.Hsevere
Worm:Win32/Ainslot!rfnsevere
Worm:Win32/Ainslot.Asevere
Worm:Win32/Autorun!rfnsevere
Worm:Win32/Dorkbotsevere
Worm:Win32/Gamarue!rfnsevere
Worm:Win32/Mamianune!rfnsevere
Worm:Win32/Mofksyssevere
Worm:Win32/Mofksys!rfnsevere
Worm:Win32/Mothyfil.Bsevere
Worm:Win32/Nuqel!bitsevere
Worm:Win32/Nuqel!rfnsevere
Worm:Win32/Rebhipsevere