| Threat Alias | Number of Incidents |
| Win32.Virut.Gen.4 [PC Tools] | 98 |
| W32/Virut [McAfee] | 63 |
| Bloodhound.Unknown [Symantec] | 55 |
| Virus.Win32.Virut.y [Kaspersky Lab] | 42 |
| W32/Virut.f [McAfee] | 26 |
| W32/Virut.g [McAfee] | 24 |
| W32.Virut.W [Symantec] | 23 |
| Virus.Win32.Virut.ab [Kaspersky Lab] | 20 |
| Virus:Win32/Virut.Q [Microsoft] | 17 |
| Virus.Win32.Virut.z [Kaspersky Lab] | 14 |
| W32/Virut-V [Sophos] | 14 |
| Virus.Win32.Virut.az [Kaspersky Lab] | 9 |
| Worm.Bobax.AB [PC Tools] | 8 |
| Win32/Virut.B [AhnLab] | 7 |
| Virus:Win32/Virut.O [Microsoft] | 6 |
| Downloader [Symantec] | 5 |
| Mal/HckPk-A, W32/Virut-Gen [Sophos] | 3 |
| Net-Worm.Win32.Bobic.dq [Kaspersky Lab] | 3 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 3 |
| W32/Virut-Gen [Sophos] | 3 |
| Adware.WhenU_SaveNow [PC Tools] | 2 |
| AdWare.Win32.BHO [Ikarus] | 2 |
| Trojan.Tiny.MK [PC Tools] | 2 |
| Virus.Win32.Sality [Ikarus] | 2 |
| Virus.Win32.Virut.au [Ikarus] | 2 |
| W32/Vetor-G [Sophos] | 2 |
| Backdoor:Win32/Poebot.AT [Microsoft] | 1 |
| BackDoor-CEO [McAfee] | 1 |
| BehavesLikeWin32.ProcessHijack [Ikarus] | 1 |
| Exp/MS04011-A [Sophos] | 1 |
| Exploit-DcomRpc.gen [McAfee] | 1 |
| Generic.PWS.Games.4 [Ikarus] | 1 |
| Infostealer.Gampass [Symantec] | 1 |
| Mal/Behav-043, W32/Virut-Gen [Sophos] | 1 |
| Net-Worm.Win32.Allaple.b [Kaspersky Lab] | 1 |
| Packer.RLPack [Ikarus] | 1 |
| PWS-Gamania.gen.a [McAfee] | 1 |
| Qhost-Gen [McAfee] | 1 |
| Trojan.Agent.VYJ [PC Tools] | 1 |
| Trojan.DR.Agent.XDO [PC Tools] | 1 |
| Trojan.Win32.Qhost.aei [Ikarus] | 1 |
| Trojan-Dropper.Win32.Delf.ajo [Kaspersky Lab] | 1 |
| Trojan-Dropper.Win32.Microjoin [Ikarus] | 1 |
| VirTool.Win32.DelfInject [Ikarus] | 1 |
| Virus.Win32.Crypt.CIK [Ikarus] | 1 |
| Virus.Win32.Hupigon.MAP [Ikarus] | 1 |
| Virus.Win32.VB.bb [Ikarus] | 1 |
| Virus.Win32.Virut.n [Ikarus] | 1 |
| W32.Ifbo.A [Symantec] | 1 |
| W32.IRCBot [Symantec] | 1 |
| W32.IRCBot.Gen [Symantec] | 1 |
| W32.Jeefo [Symantec] | 1 |
| W32.Rajump [Symantec] | 1 |
| W32.Randex [Symantec] | 1 |
| W32.SillyDC [Symantec] | 1 |
| W32.SillyFDC [Symantec] | 1 |
| W32.Spybot.Worm [Symantec] | 1 |
| W32/Virut.gen.a [McAfee] | 1 |
| W32/Virut.j [McAfee] | 1 |
| Win32.Hidrag [PC Tools] | 1 |
| Worm.AutoRun.eee [PC Tools] | 1 |
| Worm.Korgo.AH [PC Tools] | 1 |
| Worm.Poebot.CF [PC Tools] | 1 |
| Worm.PoeBot.LA [PC Tools] | 1 |
| Worm.Rbot.MCH [PC Tools] | 1 |
| Worm.RBot.UOO [PC Tools] | 1 |
| Worm.Win32.Pushbot [Ikarus] | 1 |