Change log for definition version 1.253.699.0 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: Oct 13,2017 05:11 AM UTC

New definitions

HackTool:Win32/IEPassRecovermoderate
HackTool:Win32/Rabasedmoderate
HackTool:Win64/BCoinMinemoderate
Backdoor:Win32/Darkddoser.Bsevere
Backdoor:Win32/Floxif!rfnsevere
Backdoor:Win32/Hostilsevere
Backdoor:Win32/NetWiredRC.Csevere
Backdoor:Win32/Rescoms.Asevere
Backdoor:Win32/Rescoms.Bsevere
Backdoor:Win32/Tenpeq.Csevere
Backdoor:Win32/Xiclog.Asevere
PWS:Win32/Fareit.AEsevere
PWS:Win32/Primarypass.Asevere
PWS:Win32/Stimilina.D!bitsevere
PWS:Win32/Zbot!GOAsevere
Ransom:MSIL/SerpenCrypt.A!rsmsevere
Ransom:Win32/Genasomsevere
Ransom:Win32/Urausy.Asevere
Ransom:Win32/Wadhrama.A!rsmsevere
Ransom:Win32/Weenloc.Asevere
SupportScam:JS/TechBrolo!rfnsevere
Trojan:MSIL/Blinerarch!rfnsevere
Trojan:MSIL/Bokytuda.A!bitsevere
Trojan:MSIL/Bokytuda.B!bitsevere
Trojan:MSIL/Upadter.Asevere
Trojan:Win32/Antavmu.Dsevere
Trojan:Win32/Bancteian!rfnsevere
Trojan:Win32/Bancteian.Bsevere
Trojan:Win32/Blihan.Asevere
Trojan:Win32/Dynamer!rfnsevere
Trojan:Win32/Injeber.D!bitsevere
Trojan:Win32/Lamooc.Asevere
Trojan:Win32/Qadars.C!bitsevere
Trojan:Win32/Rirlgedsevere
Trojan:Win32/Salrenmetie.Asevere
Trojan:Win32/Satbrop.Asevere
Trojan:Win32/Shampel.Asevere
Trojan:Win32/Sirefef.ABsevere
Trojan:Win32/Skeeyah.A!rfnsevere
Trojan:Win32/StartPage.ZN!bitsevere
Trojan:Win32/Swrort.Asevere
Trojan:Win32/Tiggre!rfnsevere
Trojan:Win32/Wraut.Asevere
Trojan:Win32/Zipparch.Esevere
Trojan:Win64/Meterpreter.Asevere
Trojan:Win64/MineBicoin!rfnsevere
Trojan:WinNT/Darkshell.Csevere
TrojanClicker:JS/Faceliker!rfnsevere
TrojanDownloader:MSIL/Fleendow.Asevere
TrojanDownloader:MSIL/Ranos.Asevere
TrojanDownloader:O97M/Dornoe.A!amssevere
TrojanDownloader:O97M/Shelmock.A!dhasevere
TrojanDownloader:Win32/Nymaim.Ksevere
TrojanDownloader:Win32/Rochap.Psevere
TrojanDownloader:Win32/Startpage!rfnsevere
TrojanDownloader:Win32/Unruy.Hsevere
TrojanDropper:Win32/Bunitusevere
TrojanDropper:Win32/Cutwail.gen!Ksevere
TrojanDropper:Win32/Evotob.Bsevere
TrojanDropper:Win32/Gepyssevere
TrojanProxy:Win32/Bunitu.Q!bitsevere
TrojanSpy:MSIL/Golrotedsevere
TrojanSpy:MSIL/Yakbeex.Bsevere
TrojanSpy:Win32/Loyeetro.Asevere
TrojanSpy:Win32/Nivdortsevere
TrojanSpy:Win32/Plimrost.Bsevere
Worm:Win32/Dorkbotsevere
Worm:Win32/Dorkbot.Asevere
Worm:Win32/Dorkbot.Isevere
Worm:Win32/Hamweqsevere
Worm:Win32/Ludbaruma!rfnsevere
Worm:Win32/Mamianunesevere
Worm:Win32/Mofksyssevere
Worm:Win32/Nuqel!bitsevere
Worm:Win32/Rahiwi!rfnsevere
Worm:Win32/Rebhip.Vsevere
Worm:Win32/Silly_P2P.Gsevere

Updated definitions

BrowserModifier:Win32/Diplugemhigh
BrowserModifier:Win32/Webaltahigh
HackTool:MSIL/Boilod.Ahigh
PWS:Win32/Sinowalhigh
SoftwareBundler:MSIL/Wizremhigh
SoftwareBundler:Win32/Dlhelperhigh
SoftwareBundler:Win32/Mizenotahigh
SoftwareBundler:Win32/Techsnabhigh
Trojan:Win32/Startpagehigh
TrojanDownloader:Win32/Adloadhigh
HackTool:Win32/AutoKMS!rfnmoderate
HackTool:Win32/BrowserPassviewmoderate
HackTool:Win32/Keygenmoderate
HackTool:Win32/Mailpassviewmoderate
HackTool:Win32/Virledi.Amoderate
Backdoor:IRC/Clonersevere
Backdoor:MSIL/Hanictik.Asevere
Backdoor:MSIL/Noancooe.Csevere
Backdoor:Win32/Agentsevere
Backdoor:Win32/Bifrosesevere
Backdoor:Win32/Blackhole.Usevere
Backdoor:Win32/Ciadoorsevere
Backdoor:Win32/Crugup.Bsevere
Backdoor:Win32/Cycbot.Bsevere
Backdoor:Win32/Delfsevere
Backdoor:Win32/Gaertob.Asevere
Backdoor:Win32/Kelihossevere
Backdoor:Win32/Kelihos.Fsevere
Backdoor:Win32/Kocegsevere
Backdoor:Win32/Konus.Asevere
Backdoor:Win32/NetWiredRC.Dsevere
Backdoor:Win32/Nosrawec.Asevere
Backdoor:Win32/Prosti.Lsevere
Backdoor:Win32/Qakbot!rfnsevere
Backdoor:Win32/Qakbot.Tsevere
Backdoor:Win32/Rukapsevere
Backdoor:Win32/Sensode.Gsevere
Backdoor:Win32/Simbotsevere
Backdoor:Win32/Talsab.Csevere
Backdoor:Win32/Xtrat.Asevere
Backdoor:Win32/Xtrat.ACsevere
Backdoor:Win32/Xyligan.Asevere
Backdoor:Win32/Zegostsevere
DDoS:Win32/Nitol.Asevere
DDoS:Win32/Nitol.Bsevere
DoS:Win32/Pokanti.Asevere
Exploit:HTML/IframeRefsevere
Exploit:HTML/IframeRef!rfnsevere
Exploit:Win32/Pdfjsc!rfnsevere
Exploit:Win32/Shellcodesevere
Exploit:Win32/Wmfap.Asevere
MonitoringTool:Win32/Ardamaxsevere
PWS:MSIL/Grozlexsevere
PWS:MSIL/Grozlex.Asevere
PWS:MSIL/Mintluks!rfnsevere
PWS:MSIL/Mintluks.Asevere
PWS:MSIL/Nimisi.Asevere
PWS:MSIL/Stimilini.Csevere
PWS:MSIL/Stimilini.Msevere
PWS:Win32/Behz.Asevere
PWS:Win32/Bzubsevere
PWS:Win32/Dyzap.Xsevere
PWS:Win32/Fareitsevere
PWS:Win32/Fignotok.Asevere
PWS:Win32/Gamania.Jsevere
PWS:Win32/Ldpinchsevere
PWS:Win32/Lineagesevere
PWS:Win32/Logsnifsevere
PWS:Win32/OnLineGamessevere
PWS:Win32/Passviewsevere
PWS:Win32/Progent.B!dllsevere
PWS:Win32/QQRobsevere
PWS:Win32/QQRob.Tsevere
PWS:Win32/Stealer.Msevere
PWS:Win32/Wedsnot.Asevere
PWS:Win32/Zbot!GOsevere
PWS:Win32/Zbot!rfnsevere
PWS:Win32/Zbot!VMsevere
Ransom:MSIL/Hasadcrypt.Asevere
Ransom:MSIL/JigsawLocker.Asevere
Ransom:Win32/Crilock.Asevere
Ransom:Win32/LockScreensevere
Ransom:Win32/Nymaim.Fsevere
Ransom:Win32/Wadhramasevere
Rogue:Win32/FakePAVsevere
Rogue:Win32/FakeVimessevere
Rogue:Win32/Winwebsecsevere
Trojan:AutoIt/Startpage.Esevere
Trojan:BAT/Qhost.Gsevere
Trojan:BAT/Startpage.Gsevere
Trojan:HTML/Redirector!rfnsevere
Trojan:Java/Jaraut.Asevere
Trojan:JS/Dursg.Jsevere
Trojan:JS/Redirector!rfnsevere
Trojan:MSIL/Apehedisevere
Trojan:MSIL/Blinerarch.AYsevere
Trojan:MSIL/Injector.SO!bitsevere
Trojan:MSIL/Starter.Fsevere
Trojan:MSIL/Stimilini.Jsevere
Trojan:Win32/Abndog.Asevere
Trojan:Win32/Alureonsevere
Trojan:Win32/Alureon!infsevere
Trojan:Win32/Audhi.Bsevere
Trojan:Win32/BHOsevere
Trojan:Win32/Bicone.Bsevere
Trojan:Win32/Blocix.Asevere
Trojan:Win32/Calishoo.Asevere
Trojan:Win32/Carberpsevere
Trojan:Win32/Carberp.Ksevere
Trojan:Win32/Ditul.Bsevere
Trojan:Win32/Dogrobotsevere
Trojan:Win32/Dynamer!acsevere
Trojan:Win32/Emotet.Psevere
Trojan:Win32/Grenam.B!infsevere
Trojan:Win32/Iflarsevere
Trojan:Win32/Itagomoko.Asevere
Trojan:Win32/Jhee.Hsevere
Trojan:Win32/Killavsevere
Trojan:Win32/Koutodoor.Esevere
Trojan:Win32/Koutodoor.E.dllsevere
Trojan:Win32/Kplo.Bsevere
Trojan:Win32/Krilog.Asevere
Trojan:Win32/Malex.gen!Esevere
Trojan:Win32/Miuref.Qsevere
Trojan:Win32/Miuref.Rsevere
Trojan:Win32/Neconyd.Asevere
Trojan:Win32/Nedsym.Fsevere
Trojan:Win32/Nedsym.Gsevere
Trojan:Win32/Neurevt.ABsevere
Trojan:Win32/Nivdort.Asevere
Trojan:Win32/Perkesh.Asevere
Trojan:Win32/Redosdru.Csevere
Trojan:Win32/Rofin!rfnsevere
Trojan:Win32/Rombertik.Bsevere
Trojan:Win32/Ronohu.Asevere
Trojan:Win32/Salgorea.C!dhasevere
Trojan:Win32/Searmapxp.A!bitsevere
Trojan:Win32/Sefnit.AJsevere
Trojan:Win32/Sirefef.Vsevere
Trojan:Win32/Tcpportscan.Asevere
Trojan:Win32/Tinba.Fsevere
Trojan:Win32/Urelas.AAsevere
Trojan:Win32/Vbulla.Asevere
Trojan:Win32/Vundosevere
Trojan:Win32/WebSearchsevere
Trojan:Win32/Xtratsevere
Trojan:Win32/Zonsterarch.ABsevere
Trojan:Win32/Zonsterarch.BWsevere
Trojan:Win64/HelaMiner.Asevere
Trojan:Win64/MineBicoin.Ysevere
Trojan:WinNT/Alureon.Hsevere
Trojan:WinREG/Startpage.Esevere
TrojanClicker:Win32/VBsevere
TrojanClicker:Win32/Zeriest.Bsevere
TrojanDownloader:AutoIt/Agent.Asevere
TrojanDownloader:JS/Nemucod!rfnsevere
TrojanDownloader:MSIL/Genmaldow.Asevere
TrojanDownloader:MSIL/Pstinb.Asevere
TrojanDownloader:MSIL/Putrassevere
TrojanDownloader:MSIL/Runtksevere
TrojanDownloader:O97M/Donoff!rfnsevere
TrojanDownloader:Win32/Agentsevere
TrojanDownloader:Win32/Bakyou.Asevere
TrojanDownloader:Win32/Cekarsevere
TrojanDownloader:Win32/Dofoil!rfnsevere
TrojanDownloader:Win32/Dofoil.ACsevere
TrojanDownloader:Win32/FakeIE.Bsevere
TrojanDownloader:Win32/Gemax.Asevere
TrojanDownloader:Win32/Harnigsevere
TrojanDownloader:Win32/Neojit.Asevere
TrojanDownloader:Win32/Onitab.Asevere
TrojanDownloader:Win32/Perkeshsevere
TrojanDownloader:Win32/Phinit.Asevere
TrojanDownloader:Win32/Regonid.Bsevere
TrojanDownloader:Win32/Renossevere
TrojanDownloader:Win32/Smallsevere
TrojanDownloader:Win32/Streamto.Asevere
TrojanDownloader:Win32/Terdot.Asevere
TrojanDownloader:Win32/Tugspay.Asevere
TrojanDownloader:Win32/VBsevere
TrojanDownloader:Win32/Wadolin.Asevere
TrojanDownloader:Win32/Waledac.ALsevere
TrojanDownloader:Win32/Wunkay.Asevere
TrojanDownloader:Win32/Zamelcat.Asevere
TrojanDownloader:Win32/Zamelcat.Csevere
TrojanDropper:BAT/Startpage.Asevere
TrojanDropper:MSIL/Etenudu.A!bitsevere
TrojanDropper:Win32/Agentsevere
TrojanDropper:Win32/Bifrose.Fsevere
TrojanDropper:Win32/Dinome.Asevere
TrojanDropper:Win32/Dowque.Asevere
TrojanDropper:Win32/Gamarue.Asevere
TrojanDropper:Win32/Gepys!rfnsevere
TrojanDropper:Win32/Minmal.Asevere
TrojanDropper:Win32/Nemqe.Bsevere
TrojanDropper:Win32/Randrew.A!bitsevere
TrojanDropper:Win32/Sharke.Csevere
TrojanDropper:Win32/Sirefefsevere
TrojanDropper:Win32/Sirefef.Bsevere
TrojanDropper:Win32/VBsevere
TrojanDropper:Win32/Woozlist.Bsevere
TrojanDropper:Win32/Zirit.Dsevere
TrojanDropper:Win32/Zirit.Ksevere
TrojanProxy:JS/Bankersevere
TrojanProxy:Win32/Horstsevere
TrojanSpy:MSIL/Golroted.Asevere
TrojanSpy:MSIL/Golroted.Bsevere
TrojanSpy:MSIL/Golroted.Esevere
TrojanSpy:MSIL/Golroted.Fsevere
TrojanSpy:MSIL/Hoetou.ACsevere
TrojanSpy:MSIL/Omaneat.Bsevere
TrojanSpy:MSIL/Omaneat.Csevere
TrojanSpy:MSIL/Omaneat.F!bitsevere
TrojanSpy:MSIL/Plimrost.Bsevere
TrojanSpy:MSIL/Siplog.Asevere
TrojanSpy:Win32/Ardamax.Hsevere
TrojanSpy:Win32/Keyloggersevere
TrojanSpy:Win32/Logsnifsevere
TrojanSpy:Win32/Lydrasevere
TrojanSpy:Win32/Rebhip.C!Asevere
TrojanSpy:Win32/Ustealsevere
TrojanSpy:Win32/Usteal.Dsevere
TrojanSpy:Win32/Vwealersevere
VirTool:INF/Autorunsevere
VirTool:MSIL/Injectorsevere
VirTool:MSIL/Subti.Nsevere
VirTool:Win32/CeeInjectsevere
VirTool:Win32/DelfInjectsevere
VirTool:Win32/Delfsnifsevere
VirTool:Win32/Injectorsevere
VirTool:Win32/Keylogger.Asevere
VirTool:Win32/VBInjectsevere
Worm:Java/HolePhp.Bsevere
Worm:VBS/LoveLetter.Bsevere
Worm:Win32/Ainslot.Asevere
Worm:Win32/Autorunsevere
Worm:Win32/Cambot.Csevere
Worm:Win32/Emerleoxsevere
Worm:Win32/Fasong.Gsevere
Worm:Win32/Gamarue!rfnsevere
Worm:Win32/Gamarue.AUsevere
Worm:Win32/Krol.Asevere
Worm:Win32/Lightmoonsevere
Worm:Win32/Mariofev.Asevere
Worm:Win32/Mocmexsevere
Worm:Win32/Mortosevere
Worm:Win32/MSNWormsevere
Worm:Win32/NewWormsevere
Worm:Win32/Nuqel.TAsevere
Worm:Win32/Phorpiex.Bsevere
Worm:Win32/Phorpiex.Msevere
Worm:Win32/Pykspa!rfnsevere
Worm:Win32/Rebhipsevere
Worm:Win32/Rebhip.Asevere
Worm:Win32/Secrar!rfnsevere
Worm:Win32/Slenfbot!hostssevere
Worm:Win32/Slenpingsevere
Worm:Win32/VBsevere
Worm:Win32/Wahrecks.Asevere