| Threat Alias | Number of Incidents |
| Mal/EncPk-EQ [Sophos] | 508 |
| TrojanDownloader:Win32/Renos [Microsoft] | 259 |
| Generic Dropper.bu [McAfee] | 222 |
| Trojan.Win32.FakePowav [Ikarus] | 164 |
| Generic FakeAlert.d [McAfee] | 157 |
| VirTool.Win32.Obfuscator.DF [Ikarus] | 145 |
| Downloader.gen.a [McAfee] | 132 |
| TROJ_VIRANTIX.BF [Trend Micro] | 122 |
| Win-Trojan/Agent.6144.HK [AhnLab] | 122 |
| Backdoor.Win32.Small.ejx [Kaspersky Lab] | 121 |
| Mal/TibsPak, Mal/EncPk-BB [Sophos] | 121 |
| TrojanDownloader:Win32/FakeRean.gen!C [Microsoft] | 120 |
| Mal/FakeAle-C [Sophos] | 107 |
| Trojan:Win32/Zlob.AR [Microsoft] | 105 |
| Trojan.Win32.Agent2.aul [Kaspersky Lab] | 100 |
| FakeAlert-XPSecCenter [McAfee] | 97 |
| FakeAlert-C.dr [McAfee] | 91 |
| Trojan.Agent [PC Tools] | 90 |
| Adware.Agent.ZO [PC Tools] | 86 |
| Trojan-Downloader.Win32.FraudLoad.vdjr [Kaspersky Lab] | 81 |
| Trojan-Downloader.Win32.BHO.wa [Kaspersky Lab] | 80 |
| Win-Trojan/Xema.variant [AhnLab] | 78 |
| Trojan.Virantix!sd6 [PC Tools] | 74 |
| VirTool:WinNT/Xantvi.A [Microsoft] | 68 |
| Trojan:Win32/Wantvi.I [Microsoft] | 67 |
| Mal/Zlob-AC [Sophos] | 65 |
| Puper [McAfee] | 64 |
| Trojan.Win32.Zlob.AR [Ikarus] | 64 |
| Trojan-Downloader.BHO!sd6 [PC Tools] | 64 |
| not-a-virus:FraudTool.Win32.UltimateDefender.cm [Kaspersky Lab] | 62 |
| VirTool:WinNT/Xantvi.gen!A [Microsoft] | 61 |
| Troj/FakeVir-GL [Sophos] | 53 |
| Virus.Win32.Virut.au [Ikarus] | 40 |
| Backdoor.Win32.UltimateDefender [Ikarus] | 39 |
| Virus.Win32.Zbot.AQM [Ikarus] | 39 |
| TrojanDownloader:Win32/Eldycow.gen!A [Microsoft] | 35 |
| Virus.Win32.Lighty [Ikarus] | 29 |
| Mal/Generic-A [Sophos] | 28 |
| Rootkit.Renos.Gen.11 [PC Tools] | 27 |
| Backdoor.Win32.UltimateDefender.xm [Kaspersky Lab] | 26 |
| Generic.dx [McAfee] | 25 |
| Downloader-BKK [McAfee] | 23 |
| Virus.Win32.FakeAlert.AJ [Ikarus] | 22 |
| Backdoor.Win32.UltimateDefender.a [Kaspersky Lab] | 19 |
| Trojan-Downloader.Win32.FakeRean [Ikarus] | 19 |
| Trojan-Clicker.Win32.Klik [Ikarus] | 17 |
| TROJ_RENOS.AKQ [Trend Micro] | 12 |
| Trojan:Win32/Renos.I [Microsoft] | 12 |
| Hoax.Win32.Renos [Ikarus] | 11 |
| Packer.Malware.Lighty.I [Ikarus] | 11 |
| Packer.Malware.Lighty.O [Ikarus] | 11 |
| Troj/Agent-HHC [Sophos] | 11 |
| Trojan:Win32/Dursg.B [Microsoft] | 10 |
| Hoax.Win32.Renos.ffk [Kaspersky Lab] | 9 |
| Hoax.Win32.Renos.vavf [Kaspersky Lab] | 9 |
| Troj/FakeAle-ID [Sophos] | 9 |
| Trojan.Win32.Buzus [Ikarus] | 9 |
| Trojan.Win32.Buzus.aeip [Kaspersky Lab] | 9 |
| W32/Virut-Gen [Sophos] | 9 |
| Generic Downloader.x [McAfee] | 8 |
| Generic PUP.x [McAfee] | 7 |
| Mal/Behav-112 [Sophos] | 7 |
| PE_VIRUT.AP [Trend Micro] | 7 |
| PWS:Win32/Ldpinch.BO [Microsoft] | 7 |
| TrojanDropper:Win32/Olmarik.A [Microsoft] | 7 |
| Virus:Win32/Virut.BI [Microsoft] | 7 |
| TrojanClicker:Win32/Klik [Microsoft] | 6 |
| Virus.Win32.Virut.bu [Kaspersky Lab] | 6 |
| Win-Trojan/Fraudload.9728 [AhnLab] | 6 |
| Backdoor.Win32.UltimateDefender.gml [Kaspersky Lab] | 5 |
| Trojan.Virantix [PC Tools] | 5 |
| Virus.Win32.Lighty.C [Ikarus] | 5 |
| Backdoor.IRC!sd6 [PC Tools] | 4 |
| Hoax.Win32.Renos.esb [Kaspersky Lab] | 4 |
| Hoax.Win32.Renos.fef [Kaspersky Lab] | 4 |
| Hoax.Win32.Renos.fei [Kaspersky Lab] | 4 |
| Hoax.Win32.Renos.fex [Kaspersky Lab] | 4 |
| Hoax.Win32.Renos.fge [Kaspersky Lab] | 4 |
| Mal/EncPk-EQ, Mal/Basine-C [Sophos] | 4 |
| Troj/FakeAle-IW [Sophos] | 4 |
| Troj/FakeAle-JK [Sophos] | 4 |
| Trojan.Win32.Agent.apwo [Kaspersky Lab] | 4 |
| Trojan.Win32.Pakes.lcy [Kaspersky Lab] | 4 |
| Trojan.Win32.Pakes.lgf [Kaspersky Lab] | 4 |
| Trojan.Win32.Pakes.lnh [Kaspersky Lab] | 4 |
| Trojan:Win32/Malagent [Microsoft] | 4 |
| Trojan-Downloader.Win32.Agent.ajiw [Kaspersky Lab] | 4 |
| Trojan-Downloader.Win32.FraudLoad.vbys [Kaspersky Lab] | 4 |
| Trojan-Downloader.Win32.FraudLoad.vdlg [Kaspersky Lab] | 4 |
| Trojan-Downloader.Win32.Small.afck [Kaspersky Lab] | 4 |
| TrojanDownloader:Win32/Renos.FJ [Microsoft] | 4 |
| Trojan-Spy.Win32.Zbot.gmx [Kaspersky Lab] | 4 |
| AntiVirus2009 [Symantec] | 3 |
| Backdoor.Win32.UltimateDefender.gen [Kaspersky Lab] | 3 |
| FakeAlert-AP [McAfee] | 3 |
| Generic BackDoor [McAfee] | 3 |
| Generic FakeAlert.a [McAfee] | 3 |
| Mal/Basine-C [Sophos] | 3 |
| not-a-virus:FraudTool.Win32.XPSecurityCenter.ai [Kaspersky Lab] | 3 |
| Troj/FakeAle-DQ [Sophos] | 3 |