| Threat Alias | Number of Incidents |
| W32/Rontokbro.gen@MM [McAfee] | 80,589 |
| Email-Worm.Win32.Brontok.n [Kaspersky Lab] | 78,130 |
| W32.Rontokbro.U@mm [Symantec] | 74,815 |
| WORM_BRONTOK.BA [Trend Micro] | 69,314 |
| Worm.Brontok.BA [PC Tools] | 33,649 |
| Worm.Brontok.BK [PC Tools] | 29,327 |
| Worm.Brontok.Gen!Pac.3 [PC Tools] | 13,645 |
| WORM_RONTKBR.GEN [Trend Micro] | 9,075 |
| WORM_MYDOOM.GEN [Trend Micro] | 4,006 |
| Email-Worm.Win32.Mydoom.m [Kaspersky Lab] | 4,005 |
| Backdoor.Zincite.A [Symantec] | 3,916 |
| W32.Rontokbro.X@mm [Symantec] | 3,844 |
| W32.Rontokbro@mm [Symantec] | 3,757 |
| W32/MyDoom-O [Sophos] | 3,649 |
| Worm:Win32/Mydoom.O!backdoor [Microsoft] | 3,471 |
| Email-Worm.Win32.Mydoom.m [Ikarus] | 3,382 |
| Win-Trojan/MyDoom.8192 [AhnLab] | 3,204 |
| I-Worm.Brontok.AY [PC Tools] | 2,528 |
| Backdoor.Zincite!sd5 [PC Tools] | 2,225 |
| WORM_BRONTOK.IE [Trend Micro] | 2,020 |
| PE_PARITE.A [Trend Micro] | 1,804 |
| W32/Pate.b [McAfee] | 1,803 |
| Virus.Win32.Parite.b [Kaspersky Lab] | 1,800 |
| Win32.Parite.B [PC Tools] | 1,795 |
| Email-Worm.Win32.Brontok.N [Ikarus] | 1,550 |
| W32.SillyFDC [Symantec] | 1,194 |
| W32/Zaflen.a [McAfee] | 1,073 |
| Worm.VB.FKF [PC Tools] | 1,071 |
| Worm.Win32.VB.gr [Kaspersky Lab] | 1,025 |
| W32/Rontokbr-A [Sophos] | 938 |
| W32/Dzan.c [McAfee] | 731 |
| PE_DZAN.C-O [Trend Micro] | 730 |
| Virus.Win32.Dzan.c [Kaspersky Lab] | 704 |
| I-Worm.Brontok.BM [PC Tools] | 680 |
| Trojan Horse [Symantec] | 557 |
| BackDoor-AVW [McAfee] | 494 |
| W32/Brontok-AE [Sophos] | 430 |
| Email-Worm.Win32.Brontok.q [Kaspersky Lab] | 363 |
| PE_FLUENZA.ART-O [Trend Micro] | 345 |
| Worm.Brontok.Gen.1 [PC Tools] | 331 |
| Worm.VB.DRUS [PC Tools] | 326 |
| WORM_VB.FVY [Trend Micro] | 315 |
| Backdoor.Win32.Prorat.19.i [Kaspersky Lab] | 267 |
| Backdoor.Prorat.AR1 [PC Tools] | 254 |
| Bloodhound.Unknown [Symantec] | 242 |
| TrojanClicker:Win32/Hatigh.C [Microsoft] | 238 |
| IM-Worm.Win32.Sohanad.dz [Kaspersky Lab] | 235 |
| Mal/EncPk-KP [Sophos] | 223 |
| Backdoor.Prorat [Symantec] | 213 |
| Mal/Generic-A [Sophos] | 212 |
| Gen.Packed [Ikarus] | 210 |
| Backdoor.IRC.Flood [PC Tools] | 204 |
| BKDR_PRORAT.F [Trend Micro] | 203 |
| W32.Drowor.B [Symantec] | 201 |
| W32/Drowor-A [Sophos] | 194 |
| Packed.Generic.233 [Symantec] | 190 |
| Generic.dx!fml [McAfee] | 189 |
| W32.Dizan.C [Symantec] | 164 |
| Virus:Win32/Dzan.B [Microsoft] | 137 |
| W32/Dzan-D [Sophos] | 137 |
| Troj/Prorat-19 [Sophos] | 132 |
| W32/Brontok-Gen, W32/Brontok-Gen, Mal/Packer, Mal/Behav-024 [Sophos] | 131 |
| Generic.dx [McAfee] | 124 |
| Backdoor:Win32/Prorat.L [Microsoft] | 121 |
| BKDR_AVW.A [Trend Micro] | 109 |
| W32.Dzan [Ikarus] | 109 |
| Virus.Win32.Virut.ce [Kaspersky Lab] | 108 |
| Win32/Virut.F [AhnLab] | 107 |
| Backdoor.Win32.Prorat.dz [Kaspersky Lab] | 106 |
| W32/Scribble-B [Sophos] | 105 |
| W32/Virut.gen [McAfee] | 102 |
| IM-Worm.Win32.Sohanad [Ikarus] | 99 |
| W32.Virut.CF [Symantec] | 99 |
| Backdoor.Prorat.AX [PC Tools] | 96 |
| BKDR_PRORAT.BL [Trend Micro] | 96 |
| Email-Worm.Brontok!sd5 [PC Tools] | 95 |
| W32/Brontok-Gen, W32/Brontok-Gen, Mal/Behav-024 [Sophos] | 91 |
| Win-Trojan/Xema.variant [AhnLab] | 91 |
| Backdoor.Mydoom.R [PC Tools] | 89 |
| Generic BackDoor [McAfee] | 89 |
| Virus:Win32/Virut.BM [Microsoft] | 85 |
| Backdoor.Win32.Iroffer.cx [Ikarus] | 84 |
| Spammer:Win32/Tedroo.I [Microsoft] | 84 |
| W32.Pasobir [Symantec] | 84 |
| W32/Brontok-Gen, W32/Brontok-Gen, Mal/Behav-024, Mal/Heuri-D, Mal/Emogen-N [Sophos] | 82 |
| Trojan:Win32/Puzlice.A [Microsoft] | 81 |
| Win32/Dzan.B [AhnLab] | 81 |
| Adclicker-GV [McAfee] | 77 |
| W32/Lovelet-AD [Sophos] | 75 |
| W32/Sality-AM [Sophos] | 75 |
| W32/Virut.n.gen [McAfee] | 75 |
| WORM_VB.CBS [Trend Micro] | 75 |
| Worm:Win32/Zaflen.A@mm [Microsoft] | 74 |
| Backdoor.Win32.Iroffer [Ikarus] | 73 |
| Virus:Win32/Sality.AM [Microsoft] | 73 |
| W32/Brontok-Gen, W32/Brontok-Gen, Mal/Emogen-N, Mal/Heuri-D [Sophos] | 73 |
| Trojan.Win32.Delf.aam [Kaspersky Lab] | 72 |
| Backdoor.Win32.mIRC-based.k [Kaspersky Lab] | 71 |
| Troj/VB-EHN [Sophos] | 69 |
| Backdoor.Win32.Prorat [Ikarus] | 68 |