| Threat Alias | Number of Incidents |
| BackDoor-CEP.svr [McAfee] | 57 |
| Trojan.Win32.Agent.bcn [Kaspersky Lab] | 56 |
| W32.Spybot.Worm [Symantec] | 54 |
| Win32/IRCBot.worm.variant [AhnLab] | 49 |
| BKDR_BIFROSE.AIP [Trend Micro] | 48 |
| Worm:Win32/Pushbot.gen [Microsoft] | 44 |
| Backdoor.Win32.SdBot.eba [Kaspersky Lab] | 41 |
| Virus.Win32.IRCBot.BSX [Ikarus] | 41 |
| W32/Sdbot.worm.gen.a [McAfee] | 41 |
| Backdoor.Bifrose [Symantec] | 34 |
| Backdoor.Bifrose.RH.Gen [PC Tools] | 32 |
| W32.IRCBot [Symantec] | 28 |
| Trojan Horse [Symantec] | 24 |
| Generic.dx [McAfee] | 21 |
| Infostealer [Symantec] | 20 |
| Mal/Generic-A [Sophos] | 17 |
| Backdoor.Mechbot [PC Tools] | 16 |
| Backdoor.Win32.Mechbot.d [Kaspersky Lab] | 16 |
| Trojan.Agent.CZZK [PC Tools] | 16 |
| W32/IRCbot.gen.f [McAfee] | 16 |
| Backdoor.Trojan [Symantec] | 15 |
| W32/Virut.gen.a [McAfee] | 13 |
| Downloader [Symantec] | 11 |
| New Malware.d [McAfee] | 11 |
| VirTool:Win32/VBInject.gen!AN [Microsoft] | 11 |
| Backdoor.Sdbot [Symantec] | 10 |
| Keylog-Ardamax [McAfee] | 10 |
| Mal/Heuri-D, Mal/Behav-160 [Sophos] | 10 |
| not-a-virus:Monitor.Win32.Ardamax.25 [Kaspersky Lab] | 10 |
| W32.Virut.W [Symantec] | 10 |
| WORM_VB.FON [Trend Micro] | 10 |
| Generic VB.b [McAfee] | 9 |
| Trojan.Win32.Agent.dcb [Kaspersky Lab] | 9 |
| Backdoor.Bifrose.AHY [PC Tools] | 8 |
| Backdoor:Win32/Bifrose.ACI [Microsoft] | 8 |
| BKDR_BIFROSE.MIC [Trend Micro] | 8 |
| Mal/Bifrose-R, Mal/Bifrose-G, Mal/Bifrose-D, Mal/Bifrose-A, Mal/Bifrose-E [Sophos] | 8 |
| PE_VIRUT.AV [Trend Micro] | 8 |
| Virus.Win32.Bifrose [Ikarus] | 8 |
| W32/Virut-W [Sophos] | 8 |
| Win32.Virut.Gen.4 [PC Tools] | 8 |
| Win-Trojan/Bifrose.29053 [AhnLab] | 8 |
| Generic Downloader.p [McAfee] | 7 |
| Mal/Basine-A, Mal/Emogen-I, Mal/Basine-C, Mal/Behav-053 [Sophos] | 7 |
| Trojan-Downloader.Win32.Delf.bas [Kaspersky Lab] | 7 |
| Trojan-Dropper.Delf [Ikarus] | 7 |
| Virus.Win32.Virut.av [Kaspersky Lab] | 7 |
| Win32/Virut.B [AhnLab] | 7 |
| Win-Trojan/Xema.variant [AhnLab] | 7 |
| Adware.IEHost [Symantec] | 6 |
| Backdoor.IRCBot!sd6 [PC Tools] | 6 |
| Backdoor.IRCBot.XYZ [PC Tools] | 6 |
| Backdoor.Win32.Lecna.w [Kaspersky Lab] | 6 |
| BackDoor-CSB [McAfee] | 6 |
| BKDR_AGENT.ALD [Trend Micro] | 6 |
| Infostealer.Bancos [Symantec] | 6 |
| Packed/PeSpin [PC Tools] | 6 |
| Virus.Win32.Trojan [Ikarus] | 6 |
| W32.Lovgate.R@mm [Symantec] | 6 |
| W32/IRCbot.gen.a [McAfee] | 6 |
| W32/Virut-Gen [Sophos] | 6 |
| Bloodhound.Bancos.1 [Symantec] | 5 |
| Mal_Banker [Trend Micro] | 5 |
| New Malware.aj [McAfee] | 5 |
| Packer.RLPack [Ikarus] | 5 |
| Trojan-PWS.Win32.LdPinch [Ikarus] | 5 |
| VirTool:Win32/CeeInject.gen!Q [Microsoft] | 5 |
| Virus:Win32/Virut.AC [Microsoft] | 5 |
| W32/Sdbot.worm [McAfee] | 5 |
| W32/Virut.gen [McAfee] | 5 |
| Win-Trojan/Bluescreen.9216 [AhnLab] | 5 |
| Backdoor.Win32.IRCBot.gen [Kaspersky Lab] | 4 |
| Backdoor.Win32.Lecna.ab [Kaspersky Lab] | 4 |
| Backdoor.Win32.Mechbot [Ikarus] | 4 |
| Backdoor.Win32.Rukap.gen [Kaspersky Lab] | 4 |
| Backdoor.Win32.SdBot.hrf [Kaspersky Lab] | 4 |
| Backdoor:Win32/IRCbot [Microsoft] | 4 |
| Backdoor:Win32/Lecna [Microsoft] | 4 |
| Backdoor:Win32/Poebot.gen [Microsoft] | 4 |
| BKDR_IRCBOT.JS [Trend Micro] | 4 |
| Generic BackDoor [McAfee] | 4 |
| Generic Dropper.gu [McAfee] | 4 |
| IRC/Flood.mirc [McAfee] | 4 |
| I-Worm.Lovgate.AL.Dam [PC Tools] | 4 |
| Mal/Behav-053 [Sophos] | 4 |
| not-a-virus:Client-IRC.Win32.mIRC.603 [Kaspersky Lab] | 4 |
| Trojan.DR.VanBot.FI [PC Tools] | 4 |
| VirTool:Win32/CeeInject.gen!J [Microsoft] | 4 |
| Virus.Win32.Virut.n [Ikarus] | 4 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 4 |
| W32.Lovgate.W@mm [Symantec] | 4 |
| W32.SillyDC [Symantec] | 4 |
| Win-Trojan/Poison.69632.X [AhnLab] | 4 |
| Backdoor.Win32.IRCBot.bkr [Kaspersky Lab] | 3 |
| Backdoor.Win32.Xhaker [Ikarus] | 3 |
| Backdoor:Win32/Lecna.gen [Microsoft] | 3 |
| Downloader.gen.a [McAfee] | 3 |
| Mal/Packer [Sophos] | 3 |
| PE_VIRUT.AT [Trend Micro] | 3 |
| Trojan.Win32.VB [Ikarus] | 3 |