| Threat Alias | Number of Incidents |
| W32/Virut.gen.a [McAfee] | 56 |
| PE_VIRUT.PAU [Trend Micro] | 55 |
| Win32.Virut.Gen.4 [PC Tools] | 50 |
| Bloodhound.Unknown [Symantec] | 37 |
| W32/Virut-Gen [Sophos] | 15 |
| W32.Virut.W [Symantec] | 13 |
| Win32/Virut.B [AhnLab] | 12 |
| Virus:Win32/Virut.gen!AI [Microsoft] | 7 |
| Backdoor:Win32/Bifrose.gen!B [Microsoft] | 2 |
| Constructor.Win32.Bifrose [Ikarus] | 2 |
| Virus.Win32.Virut.au [Ikarus] | 2 |
| Backdoor.Bifrose [Symantec] | 1 |
| Backdoor.Win32.Bifrose [Ikarus] | 1 |
| Backdoor:Win32/Poebot.BK [Microsoft] | 1 |
| Packer.RLPack.D [Ikarus] | 1 |
| Trojan.Agent.WXQ [PC Tools] | 1 |
| Trojan.Crypt [Ikarus] | 1 |
| Trojan.Popuper [PC Tools] | 1 |
| Trojan-Dropper.RME [Ikarus] | 1 |
| TrojanDropper:Win32/VBInject.C [Microsoft] | 1 |
| Trojan-PWS.Win32.LdPinch [Ikarus] | 1 |
| Virus:Win32/Sality.AM [Microsoft] | 1 |
| Virus:Win32/Small.R [Microsoft] | 1 |
| Virus:Win32/Virut.gen!G [Microsoft] | 1 |
| W32.Floopy.A [Symantec] | 1 |
| W32.SillyDC [Symantec] | 1 |
| Worm.Rbot.OQA [PC Tools] | 1 |
| Worm.Sohanad.R [PC Tools] | 1 |
| Worm.VB.WRI [PC Tools] | 1 |
| Worm.VB.ZUH [PC Tools] | 1 |
| Worm.Win32.VB.dm [Ikarus] | 1 |
| Worm:Win32/Flewon.A [Microsoft] | 1 |
| Worm:Win32/VB [Microsoft] | 1 |