| Threat Alias | Number of Incidents |
| Win32/Virut.F [AhnLab] | 497 |
| Virus.Win32.Virut.ce [Kaspersky Lab] | 490 |
| W32.Virut.CF [Symantec] | 480 |
| W32/Scribble-B [Sophos] | 420 |
| Virus:Win32/Virut.BM [Microsoft] | 331 |
| Virus:Win32/Virut.gen!O [Microsoft] | 81 |
| Win32/MalPackedB.suspicious [AhnLab] | 75 |
| W32/Scribble-A [Sophos] | 69 |
| Virus:Win32/Virut.gen!E [Microsoft] | 68 |
| Suspicious.MH690 [Symantec] | 42 |
| Virus.Win32.Agent.GZY [Ikarus] | 40 |
| Packer.RLPack [Ikarus] | 31 |
| Packer.RLPack.D [Ikarus] | 30 |
| Malware.Virut [PC Tools] | 29 |
| Mal/Generic-A [Sophos] | 28 |
| Mal/HckPk-A, W32/Scribble-B [Sophos] | 28 |
| Trojan Horse [Symantec] | 25 |
| W32/Virut-Gen [Sophos] | 25 |
| W32.Virut!gen [Symantec] | 24 |
| Mal/HckPk-A [Sophos] | 23 |
| PE_VIRUT.ABY [Trend Micro] | 22 |
| Virus.Win32.Virut.bl [Kaspersky Lab] | 22 |
| Virus:Win32/Virut.BB [Microsoft] | 22 |
| Mal/EncPk-EG [Sophos] | 18 |
| TrojanSpy:Win32/Bancos.gen!A [Microsoft] | 17 |
| Win32.Otwycal.A [PC Tools] | 17 |
| Mal/DelpBanc-A [Sophos] | 16 |
| Mal/Packer [Sophos] | 15 |
| Trojan:Win32/Puzlice.A [Microsoft] | 14 |
| Virus.Win32.Virut.bl [Ikarus] | 14 |
| Backdoor.Trojan [Symantec] | 13 |
| TrojanDropper:Win32/Puzlice.A [Microsoft] | 13 |
| Email-Worm.Win32.Mydoom.bj [Ikarus] | 12 |
| PE_OTWYCAL.MIC [Trend Micro] | 12 |
| Trojan-Banker.Win32.Bancos [Ikarus] | 12 |
| W32.Mytob@mm [Symantec] | 12 |
| Trojan.Agent.DEL [PC Tools] | 11 |
| TrojanDropper:Win32/OnLineGames [Microsoft] | 11 |
| Mal/Helpud-A [Sophos] | 10 |
| Trojan-Downloader.Win32.Cutwail [Ikarus] | 10 |
| VirTool:Win32/CeeInject.gen!J [Microsoft] | 10 |
| Backdoor:Win32/Refpron.M [Microsoft] | 9 |
| Downloader [Symantec] | 9 |
| Bloodhound.W32.EP [Symantec] | 8 |
| TrojanDownloader:Win32/Cutwail.gen!C [Microsoft] | 8 |
| Backdoor.Pcclient [Ikarus] | 7 |
| Backdoor.Win32.Hupigon [Ikarus] | 7 |
| Bloodhound.Unknown [Symantec] | 7 |
| TrojanSpy:Win32/Bancos.gen!C [Microsoft] | 7 |
| W32.Wowinzi.A [Symantec] | 7 |
| Win32.SuspectCrc [Ikarus] | 7 |
| Exploit.Win32.IMG-WMF [Ikarus] | 6 |
| Infostealer [Symantec] | 6 |
| not-a-virus:RiskTool.Win32.Crypter.c [Kaspersky Lab] | 6 |
| Trojan.Win32.LaSta [Ikarus] | 6 |
| Trojan.Win32.VB.mxl [Kaspersky Lab] | 6 |
| Trojan-PSW.Win32.QQPass.ezq [Kaspersky Lab] | 6 |
| Virus:Win32/Virut.gen!M [Microsoft] | 6 |
| W32.SillyDC [Symantec] | 6 |
| W32.Virut.W [Symantec] | 6 |
| Win32.Virut.Gen.4 [PC Tools] | 6 |
| WORM_BANWOR.AB [Trend Micro] | 6 |
| Backdoor.Graybird [Symantec] | 5 |
| Backdoor.Win32.Refpron [Ikarus] | 5 |
| Backdoor:Win32/Bifrose.gen!B [Microsoft] | 5 |
| Bloodhound.W32.1 [Symantec] | 5 |
| Trojan.Win32.Patched.aa [Kaspersky Lab] | 5 |
| Trojan.Win32.Piptea [Ikarus] | 5 |
| Trojan:Win32/Anomaly.gen!D [Microsoft] | 5 |
| Trojan-Clicker.Win32.VB.cvg [Ikarus] | 5 |
| TrojanDownloader:Win32/Delf.GK [Microsoft] | 5 |
| Win32.Agent.IMP [PC Tools] | 5 |
| Worm.Win32.Otwycal.ag [Kaspersky Lab] | 5 |
| Backdoor.Win32.Beastdoor [Ikarus] | 4 |
| Backdoor.Win32.Poison.k [Kaspersky Lab] | 4 |
| Backdoor.Win32.Poison.pg [Kaspersky Lab] | 4 |
| Backdoor.Win32.Small.ly [Kaspersky Lab] | 4 |
| Gen.Trojan [Ikarus] | 4 |
| Infostealer.Bancos [Symantec] | 4 |
| Mal/Banspy-F [Sophos] | 4 |
| Mal/Behav-251 [Sophos] | 4 |
| Mal/Behav-328, Mal/Behav-103 [Sophos] | 4 |
| Mal/VB-A [Sophos] | 4 |
| Mal_Banker [Trend Micro] | 4 |
| Net-Worm.Win32.Mytob [Ikarus] | 4 |
| not-a-virus:Porn-Dialer.Win32.Agent.bk [Ikarus] | 4 |
| TROJ_PROXY.FZ [Trend Micro] | 4 |
| Trojan.DL.CKSPost.A [PC Tools] | 4 |
| Trojan.Dropper [Symantec] | 4 |
| Trojan-Banker.Win32.Agent.z [Kaspersky Lab] | 4 |
| Trojan-Downloader.Win32.Delf.aup [Ikarus] | 4 |
| Trojan-Dropper.Agent [Ikarus] | 4 |
| Trojan-Proxy.Win32.Xorpix.cq [Kaspersky Lab] | 4 |
| Trojan-Proxy.Xorpix [PC Tools] | 4 |
| Trojan-PWS.Tanspy [PC Tools] | 4 |
| TrojanSpy:Win32/Banker [Microsoft] | 4 |
| VirTool.Win32.DelfInject [Ikarus] | 4 |
| Virus.Win32.Virut [Ikarus] | 4 |
| Virus.Win32.Virut.av [Kaspersky Lab] | 4 |
| Virus:Win32/Otwycal.A [Microsoft] | 4 |