| Threat Alias | Number of Incidents |
| Trojan-Downloader.MisleadApp!sd6 [PC Tools] | 1,184 |
| Generic Downloader.x [McAfee] | 514 |
| Mal/Heuri-E, Mal/Emogen-N [Sophos] | 350 |
| Trojan:Win32/Tibs.IF [Microsoft] | 340 |
| New Malware.aj [McAfee] | 338 |
| Trojan-Downloader.Win32.Hoaxer.a [Kaspersky Lab] | 336 |
| Mal/Dorf-E [Sophos] | 295 |
| not-a-virus:FraudTool.Win32.XPSecurityCenter.bk [Kaspersky Lab] | 256 |
| TROJ_ZLOB.CEA [Trend Micro] | 244 |
| TROJ_RENOS.BX [Trend Micro] | 219 |
| Mal/Generic-A [Sophos] | 212 |
| Trojan.Win32.Qhost.aes [Kaspersky Lab] | 204 |
| Trojan.Qhost!sd5 [PC Tools] | 199 |
| Trojan.Peed [Ikarus] | 194 |
| Trojan.Win32.BHO.eks [Kaspersky Lab] | 156 |
| not-a-virus:FraudTool.Win32.WinSpywareProtect.dw [Kaspersky Lab] | 144 |
| Generic PUP.x [McAfee] | 142 |
| Trojan-Downloader.Hoaxer!sd6 [PC Tools] | 136 |
| Downloader.gen.a [McAfee] | 125 |
| Generic.dx [McAfee] | 125 |
| Mal/EncPk-HL [Sophos] | 120 |
| TROJ_FAKEALER.VL [Trend Micro] | 116 |
| Program:Win32/Antivirus2008 [Microsoft] | 113 |
| Mal/EncPk-EQ [Sophos] | 112 |
| not-a-virus:FraudTool.Win32.UltimateAntivirus.cc [Kaspersky Lab] | 110 |
| Mal/FakeAV-F [Sophos] | 100 |
| Trojan.Win32.FakeSpypro [Ikarus] | 80 |
| Trojan:Win32/FakeSpypro [Microsoft] | 80 |
| Adware.UltimateDefend.C [PC Tools] | 79 |
| Troj/FakeVir-JX [Sophos] | 78 |
| Generic Dropper.bu [McAfee] | 77 |
| Trojan-Clicker.Win32.Klik [Ikarus] | 77 |
| Generic PUP.z [McAfee] | 75 |
| Trojan-Downloader.Win32.Small [Ikarus] | 75 |
| TrojanDownloader:Win32/Renos [Microsoft] | 75 |
| Trojan:Win32/Tibs.JB [Microsoft] | 72 |
| Trojan-Downloader.Win32.Adload.ma [Kaspersky Lab] | 72 |
| TrojanDownloader:Win32/Renos.DU [Microsoft] | 71 |
| Trojan.FakeAlert [PC Tools] | 70 |
| Adware.Agent.ZO [PC Tools] | 68 |
| not-a-virus:FraudTool.Win32.XPSecurityCenter.ay [Kaspersky Lab] | 67 |
| Adware-BHO.gen.f [McAfee] | 65 |
| Trojan-Dropper.Agent [Ikarus] | 63 |
| Trojan.Win32.Tibs [Ikarus] | 61 |
| Mal/EncPk-HL, Mal/FakeVirPk-A [Sophos] | 60 |
| Trojan:Win32/Ertfor.A [Microsoft] | 60 |
| Mal/EncPk-CZ [Sophos] | 57 |
| Trojan:Win32/FakeXPA [Microsoft] | 56 |
| Trojan-Downloader.FakeAlert.C [PC Tools] | 54 |
| Trojan-Downloader.MisleadApp!sd5 [PC Tools] | 54 |
| Mal/FakeAV-Y [Sophos] | 53 |
| TROJ_RENOS.ZQ [Trend Micro] | 52 |
| Trojan-Downloader.Win32.FakeRean [Ikarus] | 51 |
| Generic.dx!re [McAfee] | 48 |
| Trojan-Downloader.Win32.BHO.nby [Kaspersky Lab] | 48 |
| Win-Trojan/Zpack.15000.F [AhnLab] | 48 |
| not-a-virus:FraudTool.Win32.SystemSecurity.cc [Kaspersky Lab] | 47 |
| Mal/TinyDL-T, Mal/Heuri-E, Mal/Emogen-G [Sophos] | 46 |
| Generic.Win32.Malware [Ikarus] | 45 |
| Trojan.BHO!sd6 [PC Tools] | 44 |
| Mal/FakeAV-AA [Sophos] | 43 |
| TrojanDownloader:Win32/FakeRean.gen!C [Microsoft] | 43 |
| Virus.Win32.SdBot [Ikarus] | 43 |
| AntiVirus2008 [Symantec] | 42 |
| not-a-virus:AdWare.Win32.CashDeluxe [Ikarus] | 40 |
| not-a-virus:FraudTool.Win32.MSAntivirus.r [Kaspersky Lab] | 40 |
| FakeAlert-WinwebSecurity.gen [McAfee] | 39 |
| Trojan-Downloader.Win32.Renos.DU [Ikarus] | 39 |
| Win-Trojan/Xema.variant [AhnLab] | 39 |
| TROJ_ZLOB.EXT [Trend Micro] | 38 |
| Trojan-Downloader.Win32.Small.agdo [Kaspersky Lab] | 38 |
| FakeAlert-AG [McAfee] | 36 |
| not-a-virus:AdWare.Win32.BHO.efr [Kaspersky Lab] | 36 |
| Trojan.Crypt [Ikarus] | 36 |
| Trojan.Dropper [Symantec] | 36 |
| Trojan.Win32.BHO.fby [Kaspersky Lab] | 36 |
| Trojan.Win32.BHO.hcd [Kaspersky Lab] | 36 |
| Trojan-Clicker.Win32.Small.xj [Kaspersky Lab] | 36 |
| Trojan-Downloader.Win32.Exchanger.acd [Kaspersky Lab] | 36 |
| TrojanDownloader:Win32/Cbeplay.I [Microsoft] | 36 |
| Program:Win32/Antispycheck [Microsoft] | 35 |
| RogueAntiSpyware.VirusResponseLab [PC Tools] | 35 |
| Troj/FakeAle-JO [Sophos] | 35 |
| TrojanDownloader:Win32/FakeRean [Microsoft] | 34 |
| Generic PUP.a [McAfee] | 33 |
| Mal/FakeAV-E [Sophos] | 33 |
| Trojan.DL.Winrean.A [PC Tools] | 33 |
| Virus.Win32.Sality [Ikarus] | 33 |
| Win32.SuspectCrc [Ikarus] | 33 |
| FakeAlert-XPSecCenter [McAfee] | 32 |
| Mal/TinyDL-T [Sophos] | 32 |
| Mal/FakeAV-AD [Sophos] | 31 |
| Trojan:Win32/FakeSecSen [Microsoft] | 31 |
| FakeAlert-AQ [McAfee] | 30 |
| Generic FakeAlert.d [McAfee] | 30 |
| Generic.Win32.Malware.Antispycheck [Ikarus] | 30 |
| Trojan.Win32.BHO.hpd [Kaspersky Lab] | 30 |
| Win-Trojan/Clicker.45056.D [AhnLab] | 30 |
| Mal/FakeVirPk-A [Sophos] | 29 |
| not-a-virus:FraudTool.Win32.XPSecurityCenter.p [Kaspersky Lab] | 29 |