| Threat Alias | Number of Incidents |
| Trojan-Downloader.Small!sd6 [PC Tools] | 6,660 |
| Downloader-BJN.sys [McAfee] | 5,550 |
| Trojan:Win32/Abndog.A [Microsoft] | 5,550 |
| Trojan-Downloader.Win32.Small.xxh [Kaspersky Lab] | 5,550 |
| Trojan.Drondog [Symantec] | 5,476 |
| Mal/Generic-A [Sophos] | 4,475 |
| Downloader [Symantec] | 2,084 |
| Troj/Rootkit-EM [Sophos] | 1,628 |
| Generic Downloader.x [McAfee] | 1,409 |
| TROJ_DLOADER.DTK [Trend Micro] | 1,305 |
| Trojan-Downloader.Small.BUY [PC Tools] | 1,305 |
| Trojan-Downloader.Win32.Small.buy [Kaspersky Lab] | 1,269 |
| Trojan Horse [Symantec] | 1,099 |
| Troj/LogThief-A [Sophos] | 784 |
| Trojan-Downloader.Win32.Small.agbh [Kaspersky Lab] | 784 |
| Trojan-Downloader.Small!sd5 [PC Tools] | 759 |
| Spam-Mailbot [McAfee] | 728 |
| Trojan-Downloader.Win32.Small.tra [Kaspersky Lab] | 703 |
| Troj/Drop-O [Sophos] | 676 |
| Trojan-Downloader.Win32.Small.jis [Kaspersky Lab] | 412 |
| Win-Trojan/Downloader.9728.KT [AhnLab] | 412 |
| Trojan:Win32/Rlsloup.B [Microsoft] | 364 |
| BackDoor-DNP.dll [McAfee] | 252 |
| Trojan.DL.Ftpgzips.A.Gen [PC Tools] | 248 |
| Troj/Dloadr-BMT [Sophos] | 247 |
| Trojan-Downloader.Win32.Small.agct [Kaspersky Lab] | 247 |
| Spyware.ISearch [Symantec] | 225 |
| Generic.dx [McAfee] | 191 |
| Adware:Win32/Isearch.B [Microsoft] | 189 |
| Win-Trojan/Downloader.3584.KG [AhnLab] | 168 |
| Trojan.Dropper [Symantec] | 166 |
| Trojan-Downloader.Win32.Small.aacq [Kaspersky Lab] | 148 |
| Mal/Inet-Fam [Sophos] | 144 |
| Mal/Behav-144, Mal/Behav-009 [Sophos] | 139 |
| Downloader.gen.a [McAfee] | 118 |
| Trojan:Win32/Dumpeft.A [Microsoft] | 112 |
| TrojanDownloader:Win32/Small [Microsoft] | 109 |
| Backdoor.Trojan [Symantec] | 103 |
| Win-Trojan/Xema.variant [AhnLab] | 102 |
| Troj/DwnLdr-HRT [Sophos] | 101 |
| Trojan-Downloader.Win32.Small.yvn [Kaspersky Lab] | 94 |
| Infostealer [Symantec] | 90 |
| Trojan:Win32/Almanah.C!dll [Microsoft] | 87 |
| Trojan-Downloader.Win32.Small.almj [Kaspersky Lab] | 86 |
| Backdoor:Win32/Small.D [Microsoft] | 83 |
| Trojan-Downloader.Win32.Small.jlh [Kaspersky Lab] | 81 |
| Win-Trojan/Downloader.10240.LV [AhnLab] | 81 |
| Win-Trojan/Downloader.20992.HH [AhnLab] | 80 |
| Worm.Win32.Socks.u [Ikarus] | 78 |
| W32.Kakavex [Symantec] | 77 |
| W32/Expiro [McAfee] | 77 |
| Virus:Win32/Expiro.G [Microsoft] | 76 |
| Downloader.MisleadApp [Symantec] | 75 |
| Downloader-BTI [McAfee] | 75 |
| Win32.Expiro.Gen [PC Tools] | 73 |
| Win32/Expiro [AhnLab] | 72 |
| PE_EXPIRO.F [Trend Micro] | 71 |
| W32/Expiro-C [Sophos] | 70 |
| Packed/FSG [PC Tools] | 68 |
| Troj/Dloadr-CTC [Sophos] | 66 |
| Virus.Win32.Expiro.f [Kaspersky Lab] | 66 |
| Generic BackDoor [McAfee] | 60 |
| Trojan-Downloader.Agent [PC Tools] | 60 |
| Downloader.Trojan [Symantec] | 59 |
| PWS:Win32/Strpasseal.B [Microsoft] | 59 |
| Troj/AdbPat-A [Sophos] | 57 |
| Mal/Emogen-R [Sophos] | 56 |
| Backdoor.Perlovga.B [PC Tools] | 54 |
| Backdoor.Win32.Small.lo [Kaspersky Lab] | 54 |
| Infostealer.Gampass [Symantec] | 54 |
| TrojanDownloader:Win32/Small.AABL [Microsoft] | 54 |
| W32/Perlovga [McAfee] | 54 |
| TrojanDownloader:Win32/Smallagent [Microsoft] | 53 |
| TSPY_AGENT.ACAK [Trend Micro] | 52 |
| TROJ_SMALL.KGX [Trend Micro] | 50 |
| Trojan-Downloader.Small.GEN [PC Tools] | 50 |
| Trojan:Win32/Ertfor.A [Microsoft] | 46 |
| Packed.Generic.218 [Symantec] | 43 |
| Trojan-Downloader.Win32.Small.alzl [Kaspersky Lab] | 43 |
| Backdoor:Win32/Small.PV [Microsoft] | 42 |
| W32/Bckdr-LBV [Sophos] | 42 |
| Downloader.Generic [PC Tools] | 40 |
| Trojan-Downloader.MisleadApp!sd6 [PC Tools] | 38 |
| Generic Downloader.x!io [McAfee] | 36 |
| Mal/Packer [Sophos] | 36 |
| TROJ_MURLO.AA [Trend Micro] | 36 |
| Trojan.Zlob [Symantec] | 36 |
| Trojan-Clicker.Win32.Small.xj [Kaspersky Lab] | 36 |
| Trojan:Win32/Oficla.E [Microsoft] | 35 |
| Infostealer.Onlinegame [Symantec] | 32 |
| Trojan-Downloader.Win32.Small.agdo [Kaspersky Lab] | 32 |
| Adware.Agent.ZO [PC Tools] | 30 |
| Win-Trojan/Clicker.45056.D [AhnLab] | 30 |
| Mal/TinyDL-T [Sophos] | 29 |
| VirTool:Win32/CeeInject.gen!J [Microsoft] | 29 |
| Generic Downloader.x!wy [McAfee] | 28 |
| Mal/EncPk-HH [Sophos] | 28 |
| Generic Downloader.ap [McAfee] | 27 |
| Troj/DwnLdr-HGO [Sophos] | 26 |
| Troj/Frink-Gen [Sophos] | 26 |