| Threat Alias | Number of Incidents |
| Backdoor:Win32/Refpron.P [Microsoft] | 111 |
| W32/Scribble-B [Sophos] | 67 |
| Win32/Virut.F [AhnLab] | 67 |
| Virus.Win32.Virut.ce [Kaspersky Lab] | 50 |
| W32.Virut.CF [Symantec] | 49 |
| W32/Virut.n.gen [McAfee] | 47 |
| Malware.Virut [PC Tools] | 37 |
| Virus:Win32/Virut.BM [Microsoft] | 37 |
| Trojan:Win32/Sopiclick.A [Microsoft] | 33 |
| Trojan-Downloader.Win32.Agent.czsd [Kaspersky Lab] | 23 |
| Mal/Refpron-B [Sophos] | 14 |
| New Win32 [McAfee] | 14 |
| Virus:Win32/Virut.gen!O [Microsoft] | 12 |
| Mal/Generic-A [Sophos] | 11 |
| PE_VIRUX.H-3 [Trend Micro] | 4 |
| Refpron.gen.i [McAfee] | 4 |
| Trojan.Koblu.mm [PC Tools] | 4 |
| Trojan-Downloader.Win32.Agent.czmx [Kaspersky Lab] | 4 |
| Packed.Win32.Koblu.c [Kaspersky Lab] | 3 |
| PE_VIRUX.E-2 [Trend Micro] | 2 |
| PE_VIRUX.E-3 [Trend Micro] | 2 |
| Trojan.Win32.Koblu.ccb [Kaspersky Lab] | 2 |
| Virus.Win32.Virut [Ikarus] | 2 |
| W32/Virut.gen [McAfee] | 2 |
| Win32/Virut.D [AhnLab] | 2 |
| Backdoor.Win32.Delf.rhp [Kaspersky Lab] | 1 |
| Backdoor.Win32.Refpron [Ikarus] | 1 |
| Downloader.Delphi [Ikarus] | 1 |
| Mal/Dorf-A, W32/Vetor-A [Sophos] | 1 |
| Mal/Scribble-D [Sophos] | 1 |
| PE_VIRUT.D [Trend Micro] | 1 |
| PE_VIRUX.D-1 [Trend Micro] | 1 |
| PE_VIRUX.J-3 [Trend Micro] | 1 |
| Refpron.gen.j [McAfee] | 1 |
| Trojan Horse [Symantec] | 1 |
| Trojan.Generic [PC Tools] | 1 |
| Trojan-Downloader.Win32.DlfBfkg.amg [Kaspersky Lab] | 1 |
| Virus.Virut.j [PC Tools] | 1 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 1 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 1 |
| Virus:Win32/Virut.AK [Microsoft] | 1 |
| Virus:Win32/Virut.L [Microsoft] | 1 |
| W32.Virut.B [Symantec] | 1 |
| W32.Virut.U [Symantec] | 1 |
| W32/Vetor-A [Sophos] | 1 |
| W32/Virut.n [McAfee] | 1 |
| Win32.Virut.Gen [PC Tools] | 1 |
| Win32.Virut.Gen.5 [PC Tools] | 1 |