| Threat Alias | Number of Incidents |
| W32/Virut.gen [McAfee] | 1,145 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 880 |
| W32/Vetor-A [Sophos] | 790 |
| W32.Virut.U [Symantec] | 787 |
| PE_VIRUT.XO [Trend Micro] | 406 |
| PE_VIRUT.XP [Trend Micro] | 294 |
| Virus:Win32/Virut.AP [Microsoft] | 239 |
| Virus:Win32/Virut.AE [Microsoft] | 219 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 216 |
| PE_VIRUT.XL [Trend Micro] | 207 |
| PE_VIRUT.GEN-2 [Trend Micro] | 205 |
| Virus:Win32/Virut.AF [Microsoft] | 142 |
| Win32/Virut.D [AhnLab] | 112 |
| Bloodhound.Unknown [Symantec] | 108 |
| Virus.Win32.Sality [Ikarus] | 95 |
| Virus:Win32/Virut.L [Microsoft] | 95 |
| Trojan-Downloader.Win32.VB.bbi [Ikarus] | 89 |
| Virus.Win32.Virut.o [Kaspersky Lab] | 66 |
| Virus:Win32/Virut.K [Microsoft] | 66 |
| Virus.Win32.Virut [Ikarus] | 61 |
| PE_VIRUT.XS [Trend Micro] | 50 |
| Virus:Win32/Virut.AR [Microsoft] | 46 |
| Virus.Win32.Virut.q [Ikarus] | 33 |
| Virus.Win32.Virut.o [Ikarus] | 30 |
| PE_PAGIPEF.BS-O [Trend Micro] | 25 |
| Spam-Mailbot [McAfee] | 19 |
| W32.SillyFDC [Symantec] | 18 |
| Email-Worm.Win32.Runouce.b [Kaspersky Lab] | 15 |
| Generic FakeAlert.d [McAfee] | 14 |
| W32.Spybot.Worm [Symantec] | 14 |
| PWS-Gamania.gen.a [McAfee] | 13 |
| Email-Worm.Win32.VB.cp [Kaspersky Lab] | 12 |
| W32/MoonLig-J [Sophos] | 12 |
| WORM_MOONLIGHT.C [Trend Micro] | 12 |
| Email-Worm.Win32.Runouce.B [Ikarus] | 11 |
| PE_Chir.B [Trend Micro] | 11 |
| W32/Chir.b@MM [McAfee] | 11 |
| W32/Chir-B [Sophos] | 11 |
| W32.Chir.B@mm [Symantec] | 10 |
| Win-Trojan/Downloader.11264.GK [AhnLab] | 10 |
| Trojan-Spy.Win32.Banker.RM [Ikarus] | 9 |
| W32/Virut.remnants [McAfee] | 9 |
| Win-Trojan/Xema.variant [AhnLab] | 9 |
| FakeAlert-AG.gen.c [McAfee] | 8 |
| Virus.Win32.Virut.au [Ikarus] | 6 |
| Virus.Win32.Virut.bo [Ikarus] | 6 |
| Downloader [Symantec] | 5 |
| Trojan Horse [Symantec] | 5 |
| Virus:Win32/Virut.gen!AI [Microsoft] | 5 |
| W32.Glupzy.A [Symantec] | 5 |
| W32/Nuwar@MM [McAfee] | 5 |
| Win32/Virut.C [AhnLab] | 5 |
| Worm.Win32.AutoRun [Ikarus] | 5 |
| Email-Worm.Win32.Runouce [Ikarus] | 4 |
| Mal_Banker [Trend Micro] | 4 |
| not-a-virus:Porn-Dialer.Win32.Agent.bk [Ikarus] | 4 |
| Trojan.Dropper [Symantec] | 4 |
| Virus.Win32.Sality.s [Ikarus] | 4 |
| Virus.Win32.Virut.ak [Ikarus] | 4 |
| W32/Autorun.worm.bx.gen [McAfee] | 4 |
| W32/Autorun.worm.eb [McAfee] | 4 |
| Win32.Virtob.2 [Ikarus] | 4 |
| Win32/ChiHack.6652 [AhnLab] | 4 |
| Win-Trojan/Agent.11264.JZ [AhnLab] | 4 |
| Backdoor:Win32/Poebot.AT [Microsoft] | 3 |
| Backdoor:Win32/Poebot.BA [Microsoft] | 3 |
| BackDoor-DIY [McAfee] | 3 |
| Email-Worm.Win32.Brontok.N [Ikarus] | 3 |
| Email-Worm.Win32.Tanatos.B [Ikarus] | 3 |
| Generic.Sdbot [Ikarus] | 3 |
| Mal/Behav-164, W32/Vetor-A [Sophos] | 3 |
| QHosts-77 [McAfee] | 3 |
| TROJ_NUWAR.DDJ [Trend Micro] | 3 |
| Trojan-Clicker.Win32.Klik [Ikarus] | 3 |
| Trojan-Downloader.VB.AXY [Ikarus] | 3 |
| Trojan-Downloader.Win32.Small [Ikarus] | 3 |
| Trojan-Dropper.Delf [Ikarus] | 3 |
| Trojan-Dropper.Kobcka [Ikarus] | 3 |
| Trojan-Dropper.Win32.Small.azk [Ikarus] | 3 |
| Virus.Win32.Small [Ikarus] | 3 |
| Virus.Win32.Virut.n [Ikarus] | 3 |
| Virus:Win32/Azero.A [Microsoft] | 3 |
| W32.Gammima.AG [Symantec] | 3 |
| W32.Rontokbro.AN@mm [Symantec] | 3 |
| W32.Rontokbro@mm [Symantec] | 3 |
| W32.SillyDC [Symantec] | 3 |
| W32/Dref-AW [Sophos] | 3 |
| W32/Glupzy-B [Sophos] | 3 |
| W32/MoonLight.worm [McAfee] | 3 |
| W32/Virut [McAfee] | 3 |
| Win-Trojan/Agent.9216.FL [AhnLab] | 3 |
| Worm.Win32.VB.cj [Ikarus] | 3 |
| Worm:Win32/Autorun.OX [Microsoft] | 3 |
| WORM_AGENT.XSB [Trend Micro] | 3 |
| WORM_FLASHY.B [Trend Micro] | 3 |
| Backdoor.Trojan [Symantec] | 2 |
| Backdoor.Win32.Hupigon.fba [Kaspersky Lab] | 2 |
| Backdoor.Win32.Rbot.rqg [Kaspersky Lab] | 2 |
| Backdoor.Win32.Refpron [Ikarus] | 2 |
| Backdoor:Win32/Nuwar.A [Microsoft] | 2 |