| Threat Alias | Number of Incidents |
| Mal/Conficker-A [Sophos] | 72 |
| W32.Downadup.B [Symantec] | 63 |
| Net-Worm.Win32.Kido [Ikarus] | 38 |
| W32/Conficker.worm.gen.a [McAfee] | 30 |
| Net-Worm.Kido!sd6 [PC Tools] | 26 |
| Worm:Win32/Conficker.C [Microsoft] | 21 |
| W32.Downadup [Symantec] | 18 |
| Win32/Conficker.worm.Gen [AhnLab] | 18 |
| Trojan-Downloader.Win32.Kido [Ikarus] | 16 |
| W32/Conficker.worm.gen.b [McAfee] | 15 |
| Worm:Win32/Conficker.B [Microsoft] | 15 |
| Net-Worm.Conficker [PC Tools] | 11 |
| Trojan.Conficker.c.gen [PC Tools] | 11 |
| Win32/Kido.worm.168509 [AhnLab] | 11 |
| Worm.Win32.Conficker [Ikarus] | 10 |
| W32/Conficker.worm [McAfee] | 9 |
| Win32/Kido.worm.168032 [AhnLab] | 6 |
| Worm:Win32/Conficker.A [Microsoft] | 6 |
| W32/Confick-A [Sophos] | 5 |
| Win32/Kido.worm.164072 [AhnLab] | 4 |
| W32.Downadup!autorun [Symantec] | 3 |
| Backdoor.Win32.Agent.wci [Kaspersky Lab] | 2 |
| Email-Worm.Win32.Silly.e [Kaspersky Lab] | 2 |
| Generic.dx [McAfee] | 2 |
| Net-Worm.Kido.k [PC Tools] | 2 |
| not-a-virus:AdWare.Win32.MyCentria.h [Kaspersky Lab] | 2 |
| not-a-virus:AdWare.Win32.MyCentria.o [Kaspersky Lab] | 2 |
| Packed.Win32.Klone.bj [Kaspersky Lab] | 2 |
| Trojan.Win32.Agent.acv [Kaspersky Lab] | 2 |
| Trojan.Win32.Agent.axrm [Kaspersky Lab] | 2 |
| Trojan.Win32.Small.ytu [Kaspersky Lab] | 2 |
| Trojan.WinREG.AutoRun.a [Kaspersky Lab] | 2 |
| Trojan-Ransom.Win32.Hexzone.gen [Kaspersky Lab] | 2 |
| Virus.Win32.Sality.aa [Kaspersky Lab] | 2 |
| W32/Confick-D [Sophos] | 2 |
| Win32/Conficker.worm [AhnLab] | 2 |
| Win32/Conficker.worm.166693 [AhnLab] | 2 |
| Win32/Conficker.worm.171362 [AhnLab] | 2 |
| Win32/Conficker.worm.62976 [AhnLab] | 2 |
| Email-Worm.Silly!sd6 [PC Tools] | 1 |
| Email-Worm.Win32.Rays [Ikarus] | 1 |
| HackTool.Win32.Jakuz [Ikarus] | 1 |
| Hoax.Win32.BadJoke.Stript [Kaspersky Lab] | 1 |
| Infostealer [Symantec] | 1 |
| Mal/ConfInf-A, W32/Confick-D [Sophos] | 1 |
| Mal/Generic-A [Sophos] | 1 |
| Net-Worm.Kido.w [PC Tools] | 1 |
| Net-Worm.Kido.z [PC Tools] | 1 |
| Net-Worm.Win32.Kido.dv [Kaspersky Lab] | 1 |
| Net-Worm.Win32.Kido.ir [Kaspersky Lab] | 1 |
| not-a-virus:AdWare.Win32.BHO.ba [Kaspersky Lab] | 1 |
| not-a-virus:AdWare.Win32.VB.y [Kaspersky Lab] | 1 |
| not-a-virus:BadJoke.Win32.Stript [Ikarus] | 1 |
| Troj/Agent-IHU [Sophos] | 1 |
| Trojan.Agent!sd6 [PC Tools] | 1 |
| Trojan.Agent.bbmk [PC Tools] | 1 |
| Trojan.Linkoptimizer [PC Tools] | 1 |
| Trojan.Linkoptimizer [Symantec] | 1 |
| Trojan-Clicker.Win32.Agent.ip [Kaspersky Lab] | 1 |
| W32.Sality.AE [Symantec] | 1 |
| W32/Conficker!a [McAfee] | 1 |
| W32/Conficker.worm.gen.d [McAfee] | 1 |
| W32/Confick-F [Sophos] | 1 |
| Win32/Conficker.worm.157130 [AhnLab] | 1 |
| Win32/Conficker.worm.160464 [AhnLab] | 1 |
| Win32/Conficker.worm.162155 [AhnLab] | 1 |
| Win32/Conficker.worm.165025 [AhnLab] | 1 |
| Win32/Conficker.worm.167324 [AhnLab] | 1 |
| Win32/Conficker.worm.171376 [AhnLab] | 1 |
| Win32/Conficker.worm.173318 [AhnLab] | 1 |
| Win32/Conficker.worm.33909 [AhnLab] | 1 |
| Win32/Conficker.worm.34768 [AhnLab] | 1 |
| Win32/Conficker.worm.86016 [AhnLab] | 1 |
| Win32/Kido.worm.107785 [AhnLab] | 1 |
| Win32/Kido.worm.156691 [AhnLab] | 1 |
| Win32/Kido.worm.158440 [AhnLab] | 1 |
| Win32/Kido.worm.159084 [AhnLab] | 1 |
| Win32/Kido.worm.161750 [AhnLab] | 1 |
| Win32/Kido.worm.161814 [AhnLab] | 1 |
| Win32/Kido.worm.164529 [AhnLab] | 1 |
| Win32/Kido.worm.165141 [AhnLab] | 1 |
| Win32/Kido.worm.165616 [AhnLab] | 1 |
| Win32/Kido.worm.165840 [AhnLab] | 1 |
| Win32/Kido.worm.166048 [AhnLab] | 1 |
| Win32/Kido.worm.167071 [AhnLab] | 1 |
| Win32/Kido.worm.168371 [AhnLab] | 1 |
| Win32/Kido.worm.169822 [AhnLab] | 1 |
| Win32/Kido.worm.75776.B [AhnLab] | 1 |
| Win-Trojan/Agent.172358 [AhnLab] | 1 |
| Win-Trojan/Xema.variant [AhnLab] | 1 |
| Worm.Conficker [PC Tools] | 1 |
| Worm.Win32.AutoRun.zfe [Kaspersky Lab] | 1 |
| Worm:Win32/Conficker.gen!B [Microsoft] | 1 |