| Threat Alias | Number of Incidents |
| W32/Virut.gen [McAfee] | 1,378 |
| Bloodhound.Unknown [Symantec] | 1,030 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 665 |
| Win32.Virut.Gen [PC Tools] | 595 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 456 |
| Win32.Virut.Gen.5 [PC Tools] | 205 |
| Win32.Virut.I.Gen [PC Tools] | 183 |
| Win32.Virut.G [PC Tools] | 158 |
| Win32.Virut.J.Gen [PC Tools] | 124 |
| Virus.Win32.Virut.p [Kaspersky Lab] | 93 |
| Virus.Win32.Virut.d [Kaspersky Lab] | 63 |
| Virus.Win32.Virut.o [Kaspersky Lab] | 25 |
| W32.SillyFDC [Symantec] | 20 |
| W32.Spybot.Worm [Symantec] | 15 |
| Win32.Virut.H [PC Tools] | 15 |
| Worm.VB.AAWD [PC Tools] | 13 |
| JS.Chir.B [PC Tools] | 11 |
| Generic VB.c [McAfee] | 7 |
| Trojan.VB.EPP [PC Tools] | 7 |
| Worm.VB.ZUI [PC Tools] | 7 |
| Backdoor.Small.VZJ [PC Tools] | 6 |
| Trojan.Win32.VB.atg [Kaspersky Lab] | 6 |
| W32.Linkbot.M [Symantec] | 6 |
| Worm.VB.AAUV [PC Tools] | 6 |
| Backdoor.Win32.Hupigon.fba [Kaspersky Lab] | 5 |
| Backdoor.Trojan [Symantec] | 4 |
| Trojan.DL.VB.AAVI [PC Tools] | 4 |
| Trojan.Hider.G [PC Tools] | 4 |
| W32/Nachi.worm.a [McAfee] | 4 |
| Worm.PoeBot.P [PC Tools] | 4 |
| Worm.Win32.Nachi [PC Tools] | 4 |
| Backdoor.VB.ESE [PC Tools] | 3 |
| Net-Worm.Win32.Allaple.b [Kaspersky Lab] | 3 |
| Trojan.Agent.GEK [PC Tools] | 3 |
| Trojan.Popuper [PC Tools] | 3 |
| Backdoor.Hupigon.GAG [PC Tools] | 2 |
| Backdoor.Win32.Popwin.amm [Kaspersky Lab] | 2 |
| Backdoor.Win32.VanBot.hl [Kaspersky Lab] | 2 |
| Exploit-DcomRpc.gen [McAfee] | 2 |
| Infostealer.Gamania [Symantec] | 2 |
| TrojanSpy.VB.EXB [PC Tools] | 2 |
| Virus.Win32.VB.eg [Kaspersky Lab] | 2 |
| W32.SillyDC [Symantec] | 2 |
| W32/Autorun.worm.f [McAfee] | 2 |
| Win32.Sality.AA.Gen [PC Tools] | 2 |
| Win32.Virut.Gen.3 [PC Tools] | 2 |
| Worm.VB.FMU [PC Tools] | 2 |
| Worm.VB.ZQF [PC Tools] | 2 |
| Worm.Win32.VB.gp [Kaspersky Lab] | 2 |
| Adware.MarketScore.A [PC Tools] | 1 |
| Adware.Relevant.A [PC Tools] | 1 |
| Adware.RK.H [PC Tools] | 1 |
| Backdoor.Agent.TPH [PC Tools] | 1 |
| Backdoor.Hupigon.FFA [PC Tools] | 1 |
| Backdoor.Rizo.AA [PC Tools] | 1 |
| Backdoor.Sdbot [Symantec] | 1 |
| Backdoor.Win32.Agent.dco [Kaspersky Lab] | 1 |
| Backdoor.Win32.IRCBot.adj [Kaspersky Lab] | 1 |
| Backdoor.Win32.Popwin.aoq [Kaspersky Lab] | 1 |
| Backdoor.Win32.Rbot.feh [Kaspersky Lab] | 1 |
| Backdoor.Win32.SdBot.bze [Kaspersky Lab] | 1 |
| Backdoor.Win32.SdBot.xd [Kaspersky Lab] | 1 |
| Generic Del [McAfee] | 1 |
| Hider [McAfee] | 1 |
| IM-Worm.Win32.Agent.u [Kaspersky Lab] | 1 |
| Infostealer.QQRob.A [Symantec] | 1 |
| I-Worm.Brontok.ER [PC Tools] | 1 |
| I-Worm.VB.XYH [PC Tools] | 1 |
| New Malware.gm [McAfee] | 1 |
| New Win32 [McAfee] | 1 |
| not-a-virus:AdWare.Win32.RK.n [Kaspersky Lab] | 1 |
| PE_VIRUT.XK [Trend Micro] | 1 |
| Trojan Horse [Symantec] | 1 |
| Trojan.Agent.WNU [PC Tools] | 1 |
| Trojan.Agent.WXQ [PC Tools] | 1 |
| Trojan.AutoIT.AM [PC Tools] | 1 |
| Trojan.Delf.UPG [PC Tools] | 1 |
| Trojan.DL.Obfusc.Gen.8 [PC Tools] | 1 |
| Trojan.DR.Small.GHT [PC Tools] | 1 |
| Trojan.Jonben.A [PC Tools] | 1 |
| Trojan.PWS.OnLineGames.BCJ [PC Tools] | 1 |
| Trojan.PWS.OnLineGames.BOX [PC Tools] | 1 |
| Trojan.PWS.QQPass.ALN [PC Tools] | 1 |
| Trojan.Sramler.I [PC Tools] | 1 |
| Trojan.VB.WKS [PC Tools] | 1 |
| Trojan.VB.XYJ [PC Tools] | 1 |
| Trojan.VB.ZBW [PC Tools] | 1 |
| Trojan.Win32.Autoit.ax [Kaspersky Lab] | 1 |
| Trojan.Win32.Delf.yh [Kaspersky Lab] | 1 |
| Trojan-Downloader.Win32.Agent.dwp [Kaspersky Lab] | 1 |
| Trojan-Downloader.Win32.AutoIt.q [Kaspersky Lab] | 1 |
| Trojan-Dropper.Win32.Delf.ajo [Kaspersky Lab] | 1 |
| Trojan-Dropper.Win32.Sramler.e [Kaspersky Lab] | 1 |
| TrojanSpy.VB.GAG [PC Tools] | 1 |
| Virus.Win32.AutoRun.aaw [Kaspersky Lab] | 1 |
| Virus.Win32.AutoRun.abt [Kaspersky Lab] | 1 |
| Virus.Win32.AutoRun.aiv [Kaspersky Lab] | 1 |
| Virus.Win32.Virut.m [Kaspersky Lab] | 1 |
| Virus:Win32/Virut.AN [Microsoft] | 1 |
| W32.IRCBot [Symantec] | 1 |