| Threat Alias | Number of Incidents |
| PE_VIRUT.AT [Trend Micro] | 95 |
| W32/Virut.gen.a [McAfee] | 85 |
| Win32.Virut.Gen.4 [PC Tools] | 72 |
| Virus:Win32/Virut.AA [Microsoft] | 47 |
| W32/Virut-Gen [Sophos] | 45 |
| W32.Virut.W [Symantec] | 39 |
| Win32/Virut [AhnLab] | 34 |
| Bloodhound.Unknown [Symantec] | 10 |
| W32.IRCBot [Symantec] | 9 |
| Mal/HckPk-A, W32/Virut-Gen [Sophos] | 6 |
| Virus.Win32.Virut.n [Ikarus] | 6 |
| W32/RAHack [McAfee] | 4 |
| Backdoor.SdBot [PC Tools] | 3 |
| Backdoor.Sdbot [Symantec] | 3 |
| Packer.RLPack [Ikarus] | 3 |
| Trojan.Win32.Qhost.aei [Ikarus] | 3 |
| Virus.Win32.Rizo.E [Ikarus] | 3 |
| Virus.Win32.Sality [Ikarus] | 3 |
| Virus.Win32.Virut [Ikarus] | 3 |
| W32.Spybot.Worm [Symantec] | 3 |
| W32/Virut.j [McAfee] | 3 |
| Worm.Win32.Neeris [Ikarus] | 3 |
| Worm:Win32/Neeris.AN [Microsoft] | 3 |
| Backdoor.Trojan [Symantec] | 2 |
| Backdoor.VanBot.CL [PC Tools] | 2 |
| Backdoor:Win32/Poebot.AT [Microsoft] | 2 |
| Mal/TinyDL-T, Mal/HckPk-A, W32/Virut-Gen [Sophos] | 2 |
| Packer.RLPack.D [Ikarus] | 2 |
| Trojan-Dropper.Win32.Delf [Ikarus] | 2 |
| Trojan-Proxy.Win32.Slaper.n [Ikarus] | 2 |
| Worm.Allaple.AA [PC Tools] | 2 |
| Worm.Poebot.IT [PC Tools] | 2 |
| Adware.Relevant.A [PC Tools] | 1 |
| Backdoor.Bot [Ikarus] | 1 |
| Backdoor.Win32.VanBot [Ikarus] | 1 |
| Backdoor:Win32/Poebot.BA [Microsoft] | 1 |
| Backdoor:Win32/Poebot.BD [Microsoft] | 1 |
| Generic BackDoor [McAfee] | 1 |
| Mal/EncPk-BW, W32/Virut-Gen [Sophos] | 1 |
| Mal/Generic-A, W32/Virut-Gen [Sophos] | 1 |
| Mal/MDrop-Gen, W32/Virut-Gen [Sophos] | 1 |
| Net-Worm.Win32.Allaple.a [Ikarus] | 1 |
| Net-Worm.Win32.Kolabc [Ikarus] | 1 |
| New Win32 [McAfee] | 1 |
| Spam-Mailbot [McAfee] | 1 |
| Spyware.Marketscore_Netsetter [PC Tools] | 1 |
| Trojan.DL.Small.WJH [PC Tools] | 1 |
| Trojan.PR.Ranky.FP [PC Tools] | 1 |
| Trojan.Win32.Inject [Ikarus] | 1 |
| Trojan-Downloader.Win32.Small [Ikarus] | 1 |
| Trojan-Dropper.Win32.Microjoin [Ikarus] | 1 |
| Virus:Win32/Lurka.A [Microsoft] | 1 |
| Virus:Win32/Virut.D [Microsoft] | 1 |
| W32.Rahack.H [Symantec] | 1 |
| W32.SillyFDC [Symantec] | 1 |
| W32/Lurka.a [McAfee] | 1 |
| W32/Lurka-A [Sophos] | 1 |
| W32/Virut-L [Sophos] | 1 |
| Worm.Poebot.IN [PC Tools] | 1 |
| Worm.Poebot.KC [PC Tools] | 1 |
| Worm.PoeBot.KY [PC Tools] | 1 |
| Worm.VB.VLL [PC Tools] | 1 |
| Worm.Win32.VB.cj [Ikarus] | 1 |
| Worm:Win32/Wootbot.EG [Microsoft] | 1 |