| Threat Alias | Number of Incidents |
| Virus:Win32/Virut.BM [Microsoft] | 311 |
| W32.Virut.CF [Symantec] | 304 |
| Virus.Win32.Virut.ce [Kaspersky Lab] | 285 |
| W32/Scribble-A [Sophos] | 148 |
| W32/Scribble-B [Sophos] | 133 |
| Win32/Virut.F [AhnLab] | 116 |
| Win32/Virut.E [AhnLab] | 36 |
| PE_VIRUX.A [Trend Micro] | 23 |
| Mal/HckPk-A, W32/Scribble-B [Sophos] | 22 |
| PE_VIRUX.A-1 [Trend Micro] | 19 |
| Virus.Win32.Sality [Ikarus] | 17 |
| Virus.Win32.Virut.q [Ikarus] | 8 |
| Email-Worm.Win32.Mydoom.bj [Ikarus] | 7 |
| Mal/FakeVirPk-A, W32/Scribble-B [Sophos] | 7 |
| Trojan.Agent.DEL [PC Tools] | 7 |
| Virus.Win32.Virut.bo [Ikarus] | 7 |
| W32.Mytob@mm [Symantec] | 7 |
| Packed.Win32.Katusha.c [Kaspersky Lab] | 6 |
| Trojan-Spy.Win32.Banker.RM [Ikarus] | 6 |
| Backdoor.Win32.Popwin [Ikarus] | 4 |
| Mal/FakeVirPk-A [Sophos] | 4 |
| Trojan.Adclicker [Symantec] | 4 |
| Virus.Win32.Virut [Ikarus] | 4 |
| Win32/IRCBot.worm.Gen [AhnLab] | 4 |
| Win-Trojan/Katusha.155648.D [AhnLab] | 4 |
| Trojan.Win32.Patched [Ikarus] | 3 |
| Trojan-Banker.Win32.Bancos [Ikarus] | 3 |
| W32.SillyFDC [Symantec] | 3 |
| Win32.Virtob.2 [Ikarus] | 3 |
| Email-Worm.Win32.Tanatos.B [Ikarus] | 2 |
| Exploit.Win32.IMG-WMF [Ikarus] | 2 |
| I-Worm.Chir.B [PC Tools] | 2 |
| Packed.Win32.Koblu [Ikarus] | 2 |
| Trojan-Dropper.Agent [Ikarus] | 2 |
| Trojan-Dropper.Win32.Cutwail [Ikarus] | 2 |
| Virus.Win32.Virtob [Ikarus] | 2 |
| Virus.Win32.Virut.ak [Ikarus] | 2 |
| W32.Imaut [Symantec] | 2 |
| W32.Virut [Ikarus] | 2 |
| Worm.Win32.Neeris [Ikarus] | 2 |
| Worm:Win32/Neeris.AN [Microsoft] | 2 |
| Backdoor.Win32.IRCBot [Ikarus] | 1 |
| Backdoor.Win32.Refpron [Ikarus] | 1 |
| BehavesLikeWin32.ProcessHijack [Ikarus] | 1 |
| Downloader.MisleadApp [Symantec] | 1 |
| Email-Worm.Win32.Runouce [Ikarus] | 1 |
| Email-Worm.Win32.VB.cb [Ikarus] | 1 |
| IM-Worm.Win32.VB [Ikarus] | 1 |
| Infostealer [Symantec] | 1 |
| Mal/Behav-043, W32/Scribble-B [Sophos] | 1 |
| Mal/Generic-A, Mal/IRCBot-B, W32/Scribble-B [Sophos] | 1 |
| not-a-virus:AdWare.Win32.MyWebSearch [Ikarus] | 1 |
| not-a-virus:Porn-Dialer.Win32.Agent.bk [Ikarus] | 1 |
| P2P-Worm.Win32.Agent [Ikarus] | 1 |
| Packed.Win32.Krap [Ikarus] | 1 |
| Packed.Win32.Krap.b [Kaspersky Lab] | 1 |
| Packed.Win32.Tdss.c [Kaspersky Lab] | 1 |
| PE_VIRUX.A-2 [Trend Micro] | 1 |
| Suspicious.MH690 [Symantec] | 1 |
| Troj/Mdrop-BZI [Sophos] | 1 |
| Trojan Horse [Symantec] | 1 |
| Trojan.Autoit [Ikarus] | 1 |
| Trojan.DL.AutoIt.DO [PC Tools] | 1 |
| Trojan.Fakealert.AAI [Ikarus] | 1 |
| Trojan.Midgare.EYZ [PC Tools] | 1 |
| Trojan.Slenfbot [Ikarus] | 1 |
| Trojan.Spammer [Ikarus] | 1 |
| Trojan.Win32.Fakeinit [Ikarus] | 1 |
| Trojan.Win32.Pakes.cob [Kaspersky Lab] | 1 |
| Trojan.Zlob [Ikarus] | 1 |
| Trojan:Win32/Fakeinit [Microsoft] | 1 |
| Trojan-Clicker.Win32.VB.cvg [Ikarus] | 1 |
| Trojan-Downloader.Harnig.ZC [Ikarus] | 1 |
| Trojan-Downloader.Win32.Cutwail [Ikarus] | 1 |
| Trojan-Downloader.Win32.Suurch [Ikarus] | 1 |
| Trojan-Spy.Win32.ProAgent.21 [Ikarus] | 1 |
| VirTool.Win32.CeeInject [Ikarus] | 1 |
| VirTool.Win32.DelfInject [Ikarus] | 1 |
| Virus.Virut.ce [PC Tools] | 1 |
| Virus.W32.Sality [Ikarus] | 1 |
| Virus.Win32.Godog [Ikarus] | 1 |
| Virus.Win32.Hakaglan [Ikarus] | 1 |
| Virus.Win32.Hupigon.MAP [Ikarus] | 1 |
| Virus.Win32.VB.bg [Ikarus] | 1 |
| W32.Imaut.N [Symantec] | 1 |
| W32.IRCBot [Symantec] | 1 |
| W32.Sality [Ikarus] | 1 |
| W32.Spybot.Worm [Symantec] | 1 |
| W32.Svich [Symantec] | 1 |
| W32/Sohana-AS [Sophos] | 1 |
| Win32.Cadoiac.A [Ikarus] | 1 |
| Win32.Virtob.P [Ikarus] | 1 |
| Win-Trojan/Blank.34304 [AhnLab] | 1 |
| Worm.Autoit.DU [PC Tools] | 1 |
| Worm.AutoRun.eee [PC Tools] | 1 |
| Worm.VB.FMU [PC Tools] | 1 |
| Worm:Win32/Kulsibot.A [Microsoft] | 1 |
| WORM_RONTOKBR.BQ [Trend Micro] | 1 |