| Threat Alias | Number of Incidents |
| VirTool:Win32/CeeInject.gen!J [Microsoft] | 397 |
| Trojan Horse [Symantec] | 97 |
| VirTool:Win32/CeeInject.gen!A [Microsoft] | 59 |
| Generic.dx [McAfee] | 56 |
| Backdoor.Trojan [Symantec] | 47 |
| Trojan:Win32/Midgare.A [Microsoft] | 44 |
| W32.Spybot.Worm [Symantec] | 42 |
| W32/Inject-DE [Sophos] | 40 |
| Backdoor.IRCBot!sd6 [PC Tools] | 35 |
| Backdoor:Win32/Bifrose.EY [Microsoft] | 34 |
| W32.IRCBot [Symantec] | 34 |
| W32/Spybot.worm.gen [McAfee] | 34 |
| Mal/Behav-243 [Sophos] | 32 |
| Downloader [Symantec] | 31 |
| Backdoor.Bifrose [Symantec] | 27 |
| Backdoor.Win32.Bifrose.afqy [Kaspersky Lab] | 23 |
| Troj/Mdrop-BZI [Sophos] | 22 |
| W32/Koobface.worm.gen [McAfee] | 21 |
| Win-Trojan/Xema.variant [AhnLab] | 21 |
| Worm.Win32.AutoRun.rkz [Kaspersky Lab] | 20 |
| Backdoor.Win32.IRCBot.grs [Kaspersky Lab] | 18 |
| Generic BackDoor [McAfee] | 18 |
| Generic PUP.x [McAfee] | 18 |
| Backdoor.IRC.Bot [Symantec] | 17 |
| W32/Sdbot.worm [McAfee] | 15 |
| Mal/EncPk-FL [Sophos] | 14 |
| VirTool:Win32/Injector.gen!B [Microsoft] | 14 |
| BackDoor-DVT [McAfee] | 13 |
| Troj/DwnLdr-HLF [Sophos] | 13 |
| Backdoor.Win32.IRCBot.hlq [Kaspersky Lab] | 11 |
| Backdoor.Win32.SdBot.kiy [Kaspersky Lab] | 11 |
| Mal/Behav-043 [Sophos] | 11 |
| Packed.Win32.Tdss.c [Kaspersky Lab] | 11 |
| Trojan.Win32.AntiAV.tz [Kaspersky Lab] | 11 |
| Win-Trojan/Fraudpack.37245 [AhnLab] | 11 |
| Worm:Win32/Hamweq.A [Microsoft] | 11 |
| Backdoor.Bifrose!sd6 [PC Tools] | 10 |
| Backdoor.Win32.IRCBot.hsy [Kaspersky Lab] | 10 |
| Mal/Generic-A [Sophos] | 10 |
| Trojan.Win32.Agent.aodx [Kaspersky Lab] | 10 |
| Troj/Agent-IXM [Sophos] | 9 |
| Mal/Bifrose-O [Sophos] | 8 |
| Troj/Agent-GZP [Sophos] | 8 |
| Win-Trojan/Bifrose.72655 [AhnLab] | 8 |
| Backdoor.Win32.IRCBot.gmv [Kaspersky Lab] | 7 |
| Backdoor.Win32.IRCBot.hrx [Kaspersky Lab] | 7 |
| Mudgare [McAfee] | 7 |
| Trojan.Dropper [Symantec] | 7 |
| Backdoor.IRCBot.gix [PC Tools] | 6 |
| Backdoor.Win32.Bifrose.ains [Kaspersky Lab] | 6 |
| Backdoor.Win32.Poison.rbr [Kaspersky Lab] | 6 |
| Backdoor.Win32.SdBot.jqy [Kaspersky Lab] | 6 |
| BackDoor-CEP.gen.y [McAfee] | 6 |
| IRC-Ibot [McAfee] | 6 |
| Troj/CeeInj-Fam, Troj/Inject-DF [Sophos] | 6 |
| Trojan.Buzus!sd6 [PC Tools] | 6 |
| Trojan.Win32.Buzus.amfz [Kaspersky Lab] | 6 |
| VirTool:Win32/Injector.gen!R [Microsoft] | 6 |
| Win32/IRCBot.worm.variant [AhnLab] | 6 |
| Win-Trojan/Bifrose.48559 [AhnLab] | 6 |
| Worm:Win32/Pushbot.JD [Microsoft] | 6 |
| Backdoor.Win32.IRCBot.glv [Kaspersky Lab] | 5 |
| Backdoor.Win32.IRCBot.gnc [Kaspersky Lab] | 5 |
| Backdoor.Win32.IRCBot.gnv [Kaspersky Lab] | 5 |
| Backdoor.Win32.IRCBot.hzd [Kaspersky Lab] | 5 |
| Backdoor.Win32.IRCBot.ibd [Kaspersky Lab] | 5 |
| Backdoor-CEP [McAfee] | 5 |
| Generic Downloader.x [McAfee] | 5 |
| Mal/Generic-E, Mal/Behav-043 [Sophos] | 5 |
| Troj/IRCBot-ADQ [Sophos] | 5 |
| Trojan.AntiAV!sd6 [PC Tools] | 5 |
| Trojan.Win32.Buzus.akyt [Kaspersky Lab] | 5 |
| Trojan.Win32.Buzus.aqvr [Kaspersky Lab] | 5 |
| Trojan.Win32.Small.btw [Kaspersky Lab] | 5 |
| Trojan-Spy.BZub.fhp [PC Tools] | 5 |
| Trojan-Spy.Win32.Zbot.hgr [Kaspersky Lab] | 5 |
| Win-Trojan/Agent.8192.ST [AhnLab] | 5 |
| Worm:Win32/Pushbot.LE [Microsoft] | 5 |
| Backdoor.Win32.Agent.aelr [Kaspersky Lab] | 4 |
| Backdoor.Win32.Poison.nea [Kaspersky Lab] | 4 |
| Mal/Inject-K, Mal/EncPk-FL [Sophos] | 4 |
| Mal/Packer [Sophos] | 4 |
| Troj/IRCBot-ADC [Sophos] | 4 |
| Troj/IRCBot-ADL [Sophos] | 4 |
| Trojan.Win32.Agent.asrq [Kaspersky Lab] | 4 |
| Trojan-Downloader.Win32.Small.jbc [Kaspersky Lab] | 4 |
| W32.SillyIM [Symantec] | 4 |
| W32/Xirtem@MM [McAfee] | 4 |
| Win-Trojan/Agent.48690.G [AhnLab] | 4 |
| Worm:Win32/Pushbot.IL [Microsoft] | 4 |
| Worm:Win32/Pushbot.JA [Microsoft] | 4 |
| WORM_SDBOT.ARI [Trend Micro] | 4 |
| Backdoor.Win32.IRCBot.gou [Kaspersky Lab] | 3 |
| Backdoor.Win32.IRCBot.gsf [Kaspersky Lab] | 3 |
| Backdoor.Win32.IRCBot.hku [Kaspersky Lab] | 3 |
| Backdoor.Win32.Poison.num [Kaspersky Lab] | 3 |
| Infostealer.Banker.C [Symantec] | 3 |
| Infostealer.Gampass [Symantec] | 3 |
| Mal/Inject-K [Sophos] | 3 |
| Mal/SpyAgent-B [Sophos] | 3 |