Change log for definition version 1.279.1509.0 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 06:18 PM UTC

New definitions


No new threats have been identified in this definition update.

Updated definitions

Adware:Win32/BetterSurfhigh
BrowserModifier:Win32/Diplugemhigh
HackTool:Win32/AutoKMS!rfnhigh
HackTool:Win32/Gendowshigh
HackTool:Win32/Keygenhigh
HackTool:Win32/Keygen!rfnhigh
HackTool:Win32/LaZagne!rfnhigh
SoftwareBundler:MSIL/Wizremhigh
SoftwareBundler:Win32/Dlhelperhigh
SoftwareBundler:Win32/Prepscram.Dhigh
TrojanDownloader:Win32/Adloadhigh
TrojanDownloader:Win32/Adload!rfnhigh
Backdoor:Linux/Mirai!rfnsevere
Backdoor:MSIL/Bladabindi!rfnsevere
Backdoor:MSIL/Boilod.Asevere
Backdoor:MSIL/Boilod.Bsevere
Backdoor:MSIL/Noancooe.Asevere
Backdoor:MSIL/Noancooe.Bsevere
Backdoor:MSIL/Noancooe.Csevere
Backdoor:Win32/AgentTesla.B!MTBsevere
Backdoor:Win32/Berbew!rfnsevere
Backdoor:Win32/Bezigate.Bsevere
Backdoor:Win32/Bifrosesevere
Backdoor:Win32/Dodiw.Asevere
Backdoor:Win32/Gaertob.Asevere
Backdoor:Win32/Hupigon!rfnsevere
Backdoor:Win32/Kirts!rfnsevere
Backdoor:Win32/Noancooe!rfnsevere
Backdoor:Win32/Nuclearsevere
Backdoor:Win32/Tofsee!rfnsevere
Backdoor:Win32/Xiclog.Asevere
Backdoor:Win32/Zegostsevere
Backdoor:Win32/Zegost!rfnsevere
Backdoor:Win64/Drixed!rfnsevere
DDoS:Linux/Lightaidra!rfnsevere
DDoS:Win32/Nitol!rfnsevere
DoS:Linux/Elknot!rfnsevere
Exploit:HTML/IframeRef!rfnsevere
Exploit:Java/CVE-2012-4681!rfnsevere
Exploit:JS/Blacole!rfnsevere
Exploit:JS/ShellCode!rfnsevere
Exploit:O97M/CVE-2017-11882!rfnsevere
Exploit:Win32/MS06040severe
Exploit:Win32/RpcDcom!rfnsevere
PWS:HTML/Phish!rfnsevere
PWS:Win32/Enterak!rfnsevere
PWS:Win32/Fareitsevere
PWS:Win32/Fignotok.Asevere
PWS:Win32/Lmirsevere
PWS:Win32/Mofksys!rfnsevere
PWS:Win32/OnLineGamessevere
PWS:Win32/Populf.E!dllsevere
PWS:Win32/Primarypass.Asevere
PWS:Win32/Zbot!GOsevere
PWS:Win32/Zbot!VMsevere
Ransom:AndroidOS/LockScreen!rfnsevere
Ransom:Win32/GandCrab!rfnsevere
Ransom:Win32/GandCrab.AEsevere
Ransom:Win32/GandCrab.Esevere
Ransom:Win32/Gandcrab.G!MTBsevere
Ransom:Win32/Genasomsevere
Ransom:Win32/Pulobe.Asevere
Ransom:Win32/Rapid.A!MTBsevere
Rogue:Win32/Winwebsecsevere
SupportScam:JS/TechBrolo!rfnsevere
Trojan:AndroidOS/Adulinilini!rfnsevere
Trojan:HTML/Redirector!rfnsevere
Trojan:JS/BlacoleRef!rfnsevere
Trojan:JS/CoinHive!rfnsevere
Trojan:JS/DNSChanger!rfnsevere
Trojan:JS/HideLink!rfnsevere
Trojan:JS/Iframe!rfnsevere
Trojan:JS/Iframeinject!rfnsevere
Trojan:JS/Redirector!bitsevere
Trojan:JS/Redirector!rfnsevere
Trojan:MSIL/Bokytuda.B!bitsevere
Trojan:MSIL/Eskimo.Asevere
Trojan:MSIL/Ribaj!rfnsevere
Trojan:MSIL/Starter.Fsevere
Trojan:MSIL/Wirzemro!rfnsevere
Trojan:MSIL/Wirzemro.Bsevere
Trojan:MSIL/Wooniky!rfnsevere
Trojan:O97M/Obfuse!rfnsevere
Trojan:VBS/Movanide!rfnsevere
Trojan:Win32/Aenjaris!rfnsevere
Trojan:Win32/Asacky!rfnsevere
Trojan:Win32/Asacky.A!bitsevere
Trojan:Win32/Avkill.Esevere
Trojan:Win32/Bancteian!rfnsevere
Trojan:Win32/Bancteian.Asevere
Trojan:Win32/Casdet!rfnsevere
Trojan:Win32/CoinMiner!rfnsevere
Trojan:Win32/CoinMiner.AC!bitsevere
Trojan:Win32/CoinMiner.DAsevere
Trojan:Win32/CryptInject!rfnsevere
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/Helpud.Asevere
Trojan:Win32/Injeber.A!bitsevere
Trojan:Win32/Krilog.Asevere
Trojan:Win32/Lamooc.Asevere
Trojan:Win32/Lmir.Dsevere
Trojan:Win32/Meterpretersevere
Trojan:Win32/Meterpreter.Asevere
Trojan:Win32/Neurevt.ACsevere
Trojan:Win32/Occamy.Asevere
Trojan:Win32/Occamy.Bsevere
Trojan:Win32/Occamy.Csevere
Trojan:Win32/Pynamer.A!acsevere
Trojan:Win32/Pynamer.B!acsevere
Trojan:Win32/Qhost!rfnsevere
Trojan:Win32/Ramnit!rfnsevere
Trojan:Win32/Rebhip.AA!bitsevere
Trojan:Win32/Redosdru.Wsevere
Trojan:Win32/Rirlgedsevere
Trojan:Win32/Ronohu!rfnsevere
Trojan:Win32/Ronohu.Asevere
Trojan:Win32/Salgorea!rfnsevere
Trojan:Win32/Salgorea.C!dhasevere
Trojan:Win32/Salrenmetie.Asevere
Trojan:Win32/Selfdel!rfnsevere
Trojan:Win32/Simbot!rfnsevere
Trojan:Win32/Skeeyah.A!rfnsevere
Trojan:Win32/Sonoko.A!mssevere
Trojan:Win32/Spiltderp.Asevere
Trojan:Win32/Suloc.Asevere
Trojan:Win32/Tepely!rfnsevere
Trojan:Win32/Tiggre!rfnsevere
Trojan:Win32/Tonmye!rfnsevere
Trojan:Win32/Trafog!rfnsevere
Trojan:Win32/TrickBot.Gsevere
Trojan:Win32/Trogle.Asevere
Trojan:Win32/Uphosyfssevere
Trojan:Win32/Urelas!rfnsevere
Trojan:Win32/Vibem!rfnsevere
Trojan:Win32/Vindor!rfnsevere
Trojan:Win32/Vundo!rfnsevere
Trojan:Win64/Meterpreter!rfnsevere
Trojan:Win64/Wdfload!rfnsevere
TrojanClicker:HTML/Iframe!rfnsevere
TrojanClicker:JS/Faceliker!rfnsevere
TrojanClicker:Win32/Spackit!rfnsevere
TrojanClicker:Win32/Yabector.Bsevere
TrojanDownloader:JS/FakejQuery!rfnsevere
TrojanDownloader:JS/Inor!rfnsevere
TrojanDownloader:JS/Nemucod!rfnsevere
TrojanDownloader:JS/Psyme!rfnsevere
TrojanDownloader:JS/Sfiseu!amssevere
TrojanDownloader:MSIL/Adload.Bsevere
TrojanDownloader:O97M/Donoff!rfnsevere
TrojanDownloader:SWF/Esaprof.Bsevere
TrojanDownloader:Win32/Dofoil!rfnsevere
TrojanDownloader:Win32/Dofoil.ACsevere
TrojanDownloader:Win32/Frethog.Csevere
TrojanDownloader:Win32/Perkeshsevere
TrojanDownloader:Win32/Perkesh!rfnsevere
TrojanDownloader:Win32/Renossevere
TrojanDownloader:Win32/Sinresby.Bsevere
TrojanDownloader:Win32/Smallsevere
TrojanDownloader:Win32/Startpage!rfnsevere
TrojanDownloader:Win32/Unruy!rfnsevere
TrojanDownloader:Win32/Unruy.Qsevere
TrojanDropper:Win32/Dinwod!rfnsevere
TrojanDropper:Win32/Gepyssevere
TrojanDropper:Win32/Gepys!rfnsevere
TrojanDropper:Win32/Henbang!rfnsevere
TrojanDropper:Win32/Microjoinsevere
TrojanDropper:Win32/Rubat!rfnsevere
TrojanDropper:Win32/Sirefef!rfnsevere
TrojanProxy:Win32/Bunitu.Q!bitsevere
TrojanSpy:MSIL/Golroted.Bsevere
TrojanSpy:MSIL/Golroted.Esevere
TrojanSpy:MSIL/Keylog.Bsevere
TrojanSpy:Win32/Rebhip.C!Asevere
VirTool:MSIL/Injectorsevere
VirTool:MSIL/Splori.Asevere
VirTool:MSIL/Subti.Nsevere
VirTool:Win32/CeeInjectsevere
VirTool:Win32/Dofoil!rfnsevere
VirTool:Win32/Hlubea!rfnsevere
VirTool:Win32/Injectorsevere
VirTool:Win32/VBInjectsevere
VirTool:Win32/Vibem!rfnsevere
Worm:ALisp/Kenilfe!rfnsevere
Worm:AutoIt/Nuqel!rfnsevere
Worm:Win32/Ainslot!rfnsevere
Worm:Win32/Ainslot.Asevere
Worm:Win32/Autorunsevere
Worm:Win32/Autorun!rfnsevere
Worm:Win32/Brontok!rfnsevere
Worm:Win32/Dorkbotsevere
Worm:Win32/Emerleoxsevere
Worm:Win32/Fadok!rfnsevere
Worm:Win32/Gamarue!rfnsevere
Worm:Win32/Gamarue.AMsevere
Worm:Win32/Kufgal.Bsevere
Worm:Win32/Mofksyssevere
Worm:Win32/Mofksys!rfnsevere
Worm:Win32/Mydoom!rfnsevere
Worm:Win32/Phorpiex.Bsevere
Worm:Win32/Rebhipsevere
Worm:Win32/Rebhip.Vsevere
Worm:Win32/Sfone!rfnsevere
Worm:Win32/Sfone.Asevere
Worm:Win32/Slenpingsevere