| Threat Alias | Number of Incidents |
| W32/Virut.gen [McAfee] | 277 |
| W32/Vetor-A [Sophos] | 200 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 150 |
| PE_VIRUT.D [Trend Micro] | 146 |
| Virus:Win32/Virut.AK [Microsoft] | 143 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 138 |
| W32.Virut.B [Symantec] | 132 |
| W32.Virut.U [Symantec] | 125 |
| Win32.Virut.Gen.5 [PC Tools] | 112 |
| Win32.Virut.Gen [PC Tools] | 89 |
| W32/Virut-L [Sophos] | 73 |
| PE_VIRUT.XO [Trend Micro] | 68 |
| Virus.Win32.Cheburgen.a [Ikarus] | 63 |
| Virus:Win32/Virut.L [Microsoft] | 54 |
| Virus.Virut.na [PC Tools] | 52 |
| Virus.Win32.Virut [Ikarus] | 48 |
| PE_VIRUT.XP [Trend Micro] | 32 |
| PE_VIRUT.XL [Trend Micro] | 30 |
| Virus:Win32/Virut.AE [Microsoft] | 29 |
| Virus.Win32.Sality [Ikarus] | 27 |
| Virus:Win32/Virut.K [Microsoft] | 19 |
| Virus.Win32.Virut.q [Ikarus] | 15 |
| Virus:Win32/Virut.AP [Microsoft] | 13 |
| Virus:Win32/Virut.AF [Microsoft] | 11 |
| W32.Virut.H [Symantec] | 11 |
| Virus:Win32/Virut.D [Microsoft] | 9 |
| Mal/Dorf-A, W32/Vetor-A [Sophos] | 8 |
| Trojan Horse [Symantec] | 8 |
| PE_VIRUT.XS [Trend Micro] | 7 |
| Spam-Mailbot [McAfee] | 7 |
| Mal/EncPk-BW, W32/Vetor-A [Sophos] | 5 |
| Virus.Win32.Virut.d [Kaspersky Lab] | 5 |
| Virus.Win32.Virut.n [Ikarus] | 5 |
| Virus:Win32/Virut.AR [Microsoft] | 5 |
| Email-Worm.Win32.Brontok [Ikarus] | 4 |
| PWS-Banker.gen.aa [McAfee] | 4 |
| Virus.Win32.Cheburgen [Ikarus] | 4 |
| W32.IRCBot [Symantec] | 4 |
| W32.SillyFDC [Symantec] | 4 |
| Backdoor.Win32.Refpron [Ikarus] | 3 |
| Email-Worm.Win32.Runouce [Ikarus] | 3 |
| Mal/Behav-164, W32/Vetor-A [Sophos] | 3 |
| Net-Worm.Win32.Allaple [Ikarus] | 3 |
| not-a-virus:Porn-Dialer.Win32.Agent.bk [Ikarus] | 3 |
| PE_VIRUT.XI [Trend Micro] | 3 |
| Trojan-Clicker.Win32.VB [Ikarus] | 3 |
| Virus.Win32.Virut.bo [Ikarus] | 3 |
| Virus.Win32.Virut.p [Kaspersky Lab] | 3 |
| Virus:Win32/Virut.AG [Microsoft] | 3 |
| W32.Spybot.Worm [Symantec] | 3 |
| Win32.Virtob [Ikarus] | 3 |
| Backdoor.Rbot [Ikarus] | 2 |
| Downloader-BPL [McAfee] | 2 |
| Generic PWS.ak [McAfee] | 2 |
| Generic.Sdbot [Ikarus] | 2 |
| Hider [McAfee] | 2 |
| Mal/Behav-164, W32/Vetor-DAM [Sophos] | 2 |
| Mal/Dorf-A [Sophos] | 2 |
| Mal/TibsPak, W32/Vetor-A [Sophos] | 2 |
| Spy-Agent.bv.gen.b [McAfee] | 2 |
| Trojan.Hider.G [PC Tools] | 2 |
| Trojan-Downloader.Win32.Banload [Ikarus] | 2 |
| Trojan-Downloader.Win32.Cutwail [Ikarus] | 2 |
| Trojan-Downloader.Win32.Genome.abou [Kaspersky Lab] | 2 |
| Trojan-Dropper.Agent [Ikarus] | 2 |
| Trojan-Dropper.Delf [Ikarus] | 2 |
| Trojan-Dropper.Win32.Vaultac [Ikarus] | 2 |
| Virus.Win32.Virut.ak [Ikarus] | 2 |
| Virus:Win32/Virut.gen!B [Microsoft] | 2 |
| Virus:Win32/Virut.gen!L [Microsoft] | 2 |
| W32.Rontokbro@mm [Symantec] | 2 |
| Win32.Cadoiac.A [Ikarus] | 2 |
| Worm.AutoIT.V [PC Tools] | 2 |
| Worm.Rbot.WKL [PC Tools] | 2 |
| Backdoor.IRC.Sdbot.945 [Ikarus] | 1 |
| Backdoor.Trojan [Symantec] | 1 |
| Backdoor.Win32.Agent.aeyu [Kaspersky Lab] | 1 |
| Backdoor.Win32.Inject [Ikarus] | 1 |
| Backdoor.Win32.IRCBot [Ikarus] | 1 |
| Backdoor.Win32.Nepoe [Ikarus] | 1 |
| Backdoor.Win32.PoeBot.C [Ikarus] | 1 |
| Backdoor.Win32.Rbot [Ikarus] | 1 |
| Backdoor.Wootbot.YZ [PC Tools] | 1 |
| Backdoor:Win32/Poebot.AD [Microsoft] | 1 |
| Backdoor:Win32/Poebot.AT [Microsoft] | 1 |
| Backdoor:Win32/Poebot.BP [Microsoft] | 1 |
| Backdoor:Win32/Rbot [Microsoft] | 1 |
| Backdoor:Win32/Rbot.HB [Microsoft] | 1 |
| Email-Worm.Win32.Generic [Ikarus] | 1 |
| Email-Worm.Win32.Joleee.bed [Kaspersky Lab] | 1 |
| Email-Worm.Win32.Runouce.B [Ikarus] | 1 |
| Email-Worm.Win32.Runouce.b [Kaspersky Lab] | 1 |
| Email-Worm.Win32.VB.cb [Ikarus] | 1 |
| Hoax.Win32.BadJoke.VB [Ikarus] | 1 |
| I-Worm.Brontok.CP [PC Tools] | 1 |
| Mal/Basine-C, W32/Vetor-A [Sophos] | 1 |
| Mal/Behav-035, W32/Vetor-A [Sophos] | 1 |
| Mal/Behav-043, W32/Vetor-A [Sophos] | 1 |
| Mal/Behav-164 [Sophos] | 1 |
| Mal/Dorf-A, Mal/Dorf-E, W32/Vetor-A [Sophos] | 1 |