| Threat Alias | Number of Incidents |
| Backdoor.Graybird [Symantec] | 211 |
| BackDoor-AWQ.b [McAfee] | 187 |
| VirTool:Win32/DelfInject.gen!X [Microsoft] | 158 |
| VirTool:Win32/DelfInject.gen!AC [Microsoft] | 144 |
| Trojan Horse [Symantec] | 143 |
| Mal/Generic-A [Sophos] | 123 |
| Backdoor.Win32.Hupigon.emb [Kaspersky Lab] | 113 |
| Backdoor:Win32/Hupigon [Microsoft] | 98 |
| VirTool:Win32/DelfInject.gen!AF [Microsoft] | 82 |
| Win-Trojan/Xema.variant [AhnLab] | 72 |
| Backdoor.Hupigon.GEN [PC Tools] | 68 |
| Troj/GrayBrd-CQ [Sophos] | 65 |
| BKDR_HUPIGON.GEN [Trend Micro] | 64 |
| Generic.dx [McAfee] | 64 |
| Suspicious.MH690 [Symantec] | 64 |
| Packed.Win32.NSAnti.b [Kaspersky Lab] | 55 |
| Backdoor.Hupigon.AKGE [PC Tools] | 54 |
| VirTool:Win32/DelfInject.gen!AA [Microsoft] | 52 |
| BKDR_HUPIGON.CVT [Trend Micro] | 48 |
| Backdoor.Trojan [Symantec] | 47 |
| TROJ_BUZUS.TCC [Trend Micro] | 46 |
| VirTool:Win32/Injector.gen!D [Microsoft] | 46 |
| Troj/Agent-HTK [Sophos] | 44 |
| Mal/Dropper-G [Sophos] | 43 |
| Backdoor.Hupigon!sd5 [PC Tools] | 42 |
| Trojan.Win32.Inject.nwq [Kaspersky Lab] | 36 |
| Troj/Agent-IRM [Sophos] | 33 |
| W32.IRCBot [Symantec] | 31 |
| Mal/DSpy-B [Sophos] | 29 |
| Infostealer [Symantec] | 27 |
| Win-Trojan/Hupigon.591360.CH [AhnLab] | 27 |
| VirTool:Win32/DelfInject.gen!AX [Microsoft] | 26 |
| W32.SillyFDC [Symantec] | 26 |
| VirTool:Win32/DelfInject.gen!T [Microsoft] | 25 |
| Mal/Dropper-T [Sophos] | 24 |
| W32/Autorun.worm.zt [McAfee] | 23 |
| Trojan.Dropper [Symantec] | 20 |
| Win32/MalPackedB.suspicious [AhnLab] | 20 |
| Trojan.Buzus [PC Tools] | 19 |
| Trojan.Midgare.EYZ [PC Tools] | 19 |
| Worm.Win32.AutoRun.rye [Kaspersky Lab] | 18 |
| Generic PUP.x [McAfee] | 17 |
| Mal/Behav-298 [Sophos] | 17 |
| VirTool:Win32/DelfInject.gen!N [Microsoft] | 17 |
| W32/Autorun.worm.gen [McAfee] | 16 |
| BackDoor-CEP.svr [McAfee] | 15 |
| Mal/Delf-L [Sophos] | 15 |
| Trojan.Win32.AntiAV.ql [Kaspersky Lab] | 15 |
| VirTool:Win32/DelfInject.gen!U [Microsoft] | 15 |
| W32.SillyDC [Symantec] | 15 |
| W32.Spybot.Worm [Symantec] | 15 |
| Downloader [Symantec] | 14 |
| Mal/EncPK-LL [Sophos] | 14 |
| VirTool:Win32/DelfInject.gen!W [Microsoft] | 14 |
| W32/Sdbot.worm [McAfee] | 14 |
| Backdoor.Win32.Agent.wci [Kaspersky Lab] | 13 |
| Generic Dropper.bt [McAfee] | 13 |
| Mal/Dropper-W, Mal/Dropper-G [Sophos] | 13 |
| W32/Sdbot.worm.gen.ct [McAfee] | 13 |
| W32/SDBot-DNK [Sophos] | 13 |
| Backdoor.Win32.Agent.ucr [Kaspersky Lab] | 12 |
| Spam-Mailbot.l [McAfee] | 12 |
| Trojan.Win32.AntiAV.sa [Kaspersky Lab] | 12 |
| VirTool:Win32/DelfInject.gen!L [Microsoft] | 12 |
| Win-Trojan/Backdoor.88576.B [AhnLab] | 12 |
| Generic BackDoor [McAfee] | 11 |
| Mal/Delf-R [Sophos] | 11 |
| New Malware.ix [McAfee] | 11 |
| Virus.Win32.Virut.ce [Kaspersky Lab] | 11 |
| Virus:Win32/Virut.BM [Microsoft] | 11 |
| W32/Scribble-B [Sophos] | 11 |
| W32/Virut.gen [McAfee] | 11 |
| Win32/Virut.F [AhnLab] | 11 |
| P2P-Worm.Win32.Palevo.kag [Kaspersky Lab] | 10 |
| Trojan.Win32.Inject.aiti [Kaspersky Lab] | 10 |
| Trojan:Win32/Midgare.A [Microsoft] | 10 |
| VirTool:Win32/DelfInject.gen!M [Microsoft] | 10 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 10 |
| W32.Pinfi [Symantec] | 10 |
| Win32/IRCBot.worm.variant [AhnLab] | 10 |
| Win-Trojan/Buzus.165888.D [AhnLab] | 10 |
| Win-Trojan/Downloader.62976.X [AhnLab] | 10 |
| Win-Trojan/Hupigon.698368.D [AhnLab] | 10 |
| Backdoor.Bifrose [Symantec] | 9 |
| Generic Dropper [McAfee] | 9 |
| Mal/Behav-103, Mal/Behav-043, Mal/Dropper-G [Sophos] | 9 |
| Mal/FakeVirPk-A [Sophos] | 9 |
| PE_PARITE.A [Trend Micro] | 9 |
| VirTool:Win32/DelfInject.gen!AW [Microsoft] | 9 |
| Virus.Win32.Parite.b [Kaspersky Lab] | 9 |
| Virus:Win32/Virut.AK [Microsoft] | 9 |
| W32.Virut.B [Symantec] | 9 |
| Win32.Virut.Gen [PC Tools] | 9 |
| Win-Trojan/Inject.49152.BB [AhnLab] | 9 |
| Worm:Win32/Pushbot.gen!C [Microsoft] | 9 |
| Backdoor.Hupigon.A!ct [PC Tools] | 8 |
| Generic Dropper.ay [McAfee] | 8 |
| Mal/DelpSpy-A [Sophos] | 8 |
| Mal/Stealer-A [Sophos] | 8 |
| Troj/Poison-M [Sophos] | 8 |