| Threat Alias | Number of Incidents |
| Mal/EncPk-EQ [Sophos] | 76 |
| TrojanDownloader:Win32/FakeRean [Microsoft] | 41 |
| Trojan.Virantix.C [Symantec] | 40 |
| W32.Virut.W [Symantec] | 39 |
| Virus:Win32/Virut.AU [Microsoft] | 34 |
| W32/Virut-Gen [Sophos] | 33 |
| PE_VIRUT.BA [Trend Micro] | 32 |
| Virus.Win32.Virut.bx [Kaspersky Lab] | 32 |
| W32/Virut.j [McAfee] | 31 |
| Generic Dropper.bu [McAfee] | 27 |
| TrojanDownloader:Win32/Renos [Microsoft] | 27 |
| TrojanDownloader:Win32/FakeRean.gen!C [Microsoft] | 20 |
| Generic FakeAlert.d [McAfee] | 18 |
| Trojan.Virantix!sd6 [PC Tools] | 16 |
| FakeAlert-XPSecCenter [McAfee] | 14 |
| Downloader.MisleadApp [Symantec] | 13 |
| Troj/FakeAle-JI [Sophos] | 9 |
| Trojan.Win32.FraudPack.gtt [Kaspersky Lab] | 9 |
| W32/Vetor-A [Sophos] | 9 |
| Adware.Agent.ZO [PC Tools] | 8 |
| AntiVirus2009 [Symantec] | 8 |
| Trojan-Downloader.Win32.FakeRean [Ikarus] | 8 |
| Trojan:Win32/Wantvi.I [Microsoft] | 7 |
| Trojan-Downloader.Win32.FraudLoad.vdii [Kaspersky Lab] | 7 |
| Win32.Virut.Gen.4 [PC Tools] | 7 |
| Win32/Virut.Gen [AhnLab] | 7 |
| not-a-virus:FraudTool.Win32.XPAntiSpyware2009.i [Kaspersky Lab] | 6 |
| W32.Virut.U [Symantec] | 6 |
| Win32.Virut.Gen.5 [PC Tools] | 6 |
| PE_VIRUT.XP [Trend Micro] | 5 |
| Trojan.Virantix [Symantec] | 5 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 5 |
| Virus:Win32/Virut.AE [Microsoft] | 5 |
| Hoax.Win32.Renos.fef [Kaspersky Lab] | 4 |
| RogueAntiSpyware.AntiVirusPro [PC Tools] | 4 |
| Troj/FakeAle-JK [Sophos] | 4 |
| Trojan.Win32.Agent.apwo [Kaspersky Lab] | 4 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 4 |
| W32/Virut.gen.a [McAfee] | 4 |
| Generic FakeAlert.a [McAfee] | 3 |
| PE_VIRUT.D [Trend Micro] | 3 |
| Trojan.Win32.Pakes.lnh [Kaspersky Lab] | 3 |
| Trojan:Win32/FakeRean [Microsoft] | 3 |
| Virus:Win32/Virut.AK [Microsoft] | 3 |
| W32.Virut.B [Symantec] | 3 |
| Win32.Virut.Gen [PC Tools] | 3 |
| Win32/Virut.B [AhnLab] | 3 |
| Infostealer [Symantec] | 2 |
| New Win32 [McAfee] | 2 |
| PE_VIRUT.PAU [Trend Micro] | 2 |
| PE_VIRUT.XV [Trend Micro] | 2 |
| PE_VIRUT.YE [Trend Micro] | 2 |
| Virus.Win32.Virut.ac [Kaspersky Lab] | 2 |
| Virus.Win32.Virut.af [Kaspersky Lab] | 2 |
| Virus.Win32.Virut.y [Kaspersky Lab] | 2 |
| Virus:Win32/Virut.Q [Microsoft] | 2 |
| Virus:Win32/Virut.T [Microsoft] | 2 |
| Virus:Win32/Virut.V [Microsoft] | 2 |
| W32/Vetor-G [Sophos] | 2 |
| W32/Virut.h [McAfee] | 2 |
| W32/Virut-V [Sophos] | 2 |
| Backdoor.UltimateDefender!sd6 [PC Tools] | 1 |
| Backdoor.Win32.UltimateDefender.gjb [Kaspersky Lab] | 1 |
| Backdoor.Win32.UltimateDefender.gjz [Kaspersky Lab] | 1 |
| Downloader [Symantec] | 1 |
| Generic PUP.x [McAfee] | 1 |
| Generic PWS.ak [McAfee] | 1 |
| PE_VIRUT.XL [Trend Micro] | 1 |
| PE_VIRUT.XW [Trend Micro] | 1 |
| PE_VIRUT.XZ [Trend Micro] | 1 |
| Qhost-Gen [McAfee] | 1 |
| Troj/FakeAle-JF [Sophos] | 1 |
| Troj/FakeAle-JJ [Sophos] | 1 |
| Trojan.Dropper [Symantec] | 1 |
| Trojan.Win32.StartPage.dgv [Kaspersky Lab] | 1 |
| Trojan-Downloader.Win32.FraudLoad.vdho [Kaspersky Lab] | 1 |
| Trojan-Downloader.Win32.FraudLoad.vmey [Kaspersky Lab] | 1 |
| TrojanDropper:Win32/Renos [Microsoft] | 1 |
| Virus.Win32.Virut.ah [Kaspersky Lab] | 1 |
| Virus.Win32.Virut.ai [Kaspersky Lab] | 1 |
| Virus:Win32/Sality.AM [Microsoft] | 1 |
| Virus:Win32/Virut.AF [Microsoft] | 1 |
| Virus:Win32/Virut.gen!AI [Microsoft] | 1 |
| W32/Virut [McAfee] | 1 |
| W32/Virut-S [Sophos] | 1 |
| Win-Trojan/Fakeav.9728 [AhnLab] | 1 |
| Worm.PoeBot.LA [PC Tools] | 1 |