| Threat Alias | Number of Incidents |
| IRC/Client [McAfee] | 33,660 |
| not-a-virus:Client-IRC.Win32.mIRC.603 [Kaspersky Lab] | 32,980 |
| Backdoor.IRCBot [PC Tools] | 28,050 |
| not-a-virus:Client-IRC.Win32.mIRC [Ikarus] | 20,910 |
| Win-Trojan/MircPack.1790464 [AhnLab] | 20,570 |
| IRC-Worm.Win32.Tedeto.a [Ikarus] | 4,080 |
| Worm.Rungbu.B [PC Tools] | 1,445 |
| PE_RUNGBU.C-O [Trend Micro] | 1,406 |
| Virus.Win32.VB.cc [Kaspersky Lab] | 1,119 |
| Allsum [McAfee] | 1,090 |
| Adware.Allsum [PC Tools] | 1,089 |
| Adware.AllSum [Symantec] | 1,057 |
| not-a-virus:AdWare.Win32.AllSum.a [Kaspersky Lab] | 1,023 |
| W32.Rungbu [Symantec] | 934 |
| Generic VB.c [McAfee] | 777 |
| Worm.Win32.VB.du [Kaspersky Lab] | 775 |
| PE_RUNGBU.B-O [Trend Micro] | 768 |
| Worm.VB.YVF [PC Tools] | 767 |
| TrojanClicker:Win32/Hatigh.C [Microsoft] | 345 |
| Mal/EncPk-KP [Sophos] | 283 |
| Gen.Packed [Ikarus] | 270 |
| Packed.Generic.233 [Symantec] | 244 |
| Generic.dx!fml [McAfee] | 243 |
| Worm.VB.ZVX [PC Tools] | 189 |
| Bloodhound.Unknown [Symantec] | 183 |
| PE_RUNGBU.A-O [Trend Micro] | 167 |
| Trojan-Clicker.Win32.Hatigh [Ikarus] | 108 |
| Mal/Generic-A [Sophos] | 107 |
| Trojan-Downloader.Win32.Suurch.awk [Kaspersky Lab] | 105 |
| W32/Rungbu-C [Sophos] | 75 |
| not-a-virus:AdWare.Win32.AllSum.a [Ikarus] | 66 |
| TrojanDownloader:Win32/Allsum [Microsoft] | 66 |
| Win-Trojan/Ourxin.45056 [AhnLab] | 66 |
| Worm.Win32.VB.du [Ikarus] | 63 |
| W32.Dizan.D [Symantec] | 54 |
| Mal/Emogen-E, Mal/Basine-C [Sophos] | 39 |
| W32/VB-CTQ [Sophos] | 39 |
| Trojan.KillAV [Symantec] | 37 |
| Backdoor.Win32.Iroffer.fc [Kaspersky Lab] | 36 |
| Virus:Win32/Rungbu.C [Microsoft] | 35 |
| W32/Rungbu-A [Sophos] | 31 |
| Downloader [Symantec] | 29 |
| New Malware.dw [McAfee] | 25 |
| Worm:Win32/Autorun.gen!DI [Microsoft] | 24 |
| Infostealer.Bancos [Symantec] | 23 |
| PE_DZAN.A [Trend Micro] | 22 |
| W32/Dzan.b [McAfee] | 21 |
| Backdoor.Win32.Ceckno [Ikarus] | 19 |
| PE_TENGA.A [Trend Micro] | 19 |
| Virus.Win32.Tenga.a [Kaspersky Lab] | 19 |
| W32/Gael.worm.a [McAfee] | 19 |
| Virus.Win32.Dzan.a [Kaspersky Lab] | 18 |
| W32.Licum [Symantec] | 18 |
| W32/Hipack.worm [McAfee] | 16 |
| Worm.Win32.Hipak.a [Kaspersky Lab] | 16 |
| Trojan-Banker.Win32.Agent [Ikarus] | 15 |
| Trojan-Banker.Win32.Agent.so [Kaspersky Lab] | 15 |
| Trojan-Downloader.Win32.Suurch.awj [Kaspersky Lab] | 15 |
| Mal/Horst [Sophos] | 14 |
| W32.Dzan [Ikarus] | 14 |
| TrojanDropper:Win32/Agent.FG [Microsoft] | 13 |
| PE_HIPAK.A [Trend Micro] | 12 |
| PE_RUNGBU.C [Trend Micro] | 12 |
| TrojanDownloader:Win32/Horst.Q [Microsoft] | 12 |
| Virus:Win32/Hipak.A [Microsoft] | 12 |
| W32/Dzan-E [Sophos] | 12 |
| Win32/Xema.worm.103424.B [AhnLab] | 11 |
| Worm.Win32.AutoRun [Ikarus] | 11 |
| Worm:Win32/Autorun.PQ [Microsoft] | 11 |
| Mal/Packer, Mal/Basine-A, Mal/Behav-160, Mal/Emogen-E, Mal/Basine-C [Sophos] | 10 |
| Trojan-Downloader.Win32.Banload [Ikarus] | 10 |
| W32/Autorun.worm.gen [McAfee] | 10 |
| Win-Trojan/Agent.251904.S [AhnLab] | 10 |
| Mal/Behav-160, Mal/Behav-009 [Sophos] | 9 |
| Trojan-Downloader.Win32.Banload.bat [Kaspersky Lab] | 9 |
| New Malware.fa [McAfee] | 8 |
| Trojan.KillAV!sd6 [PC Tools] | 8 |
| Trojan-Downloader.Win32.Calac [Ikarus] | 8 |
| Worm.Hipak!sd5 [PC Tools] | 8 |
| Mal/Basine-C [Sophos] | 7 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 7 |
| Virus.Win32.Warezov [Ikarus] | 7 |
| Win32/Xema.worm.76288.B [AhnLab] | 7 |
| Mal/Packer, Mal/Behav-160, Mal/Emogen-E [Sophos] | 6 |
| Trojan-PSW.Bancos [PC Tools] | 6 |
| W32.Virut.U [Symantec] | 6 |
| W32/Vetor-A [Sophos] | 6 |
| PE_RUNGBU.G-O [Trend Micro] | 5 |
| PWS-Banker!bdv [McAfee] | 5 |
| Trojan Horse [Symantec] | 5 |
| Virus.Win32.Oliga [Ikarus] | 5 |
| W32.SillyFDC [Symantec] | 5 |
| Win32.SuspectCrc [Ikarus] | 5 |
| Win32/Rungbu [AhnLab] | 5 |
| Worm.Rungbu.A [PC Tools] | 5 |
| Downloader.Trojan [Symantec] | 4 |
| Generic VB.b [McAfee] | 4 |
| Mal/Basine-A, Mal/Behav-160, Mal/Emogen-E, Mal/Basine-C [Sophos] | 4 |
| Mal/Packer, Mal/Behav-160, Mal/Emogen-E, Mal/Behav-009 [Sophos] | 4 |
| New Malware.d [McAfee] | 4 |