| Threat Alias | Number of Incidents |
| Backdoor.Trojan [Symantec] | 266 |
| Win32/IRCBot.worm.variant [AhnLab] | 231 |
| Backdoor.Win32.IRCBot [Ikarus] | 221 |
| BackDoor-DVR [McAfee] | 189 |
| W32.Spybot.Worm [Symantec] | 176 |
| Backdoor.Win32.IRCBot.jvw [Kaspersky Lab] | 161 |
| VirTool:Win32/CeeInject.gen!R [Microsoft] | 159 |
| W32/Sdbot.worm [McAfee] | 149 |
| Mal/Inject-M [Sophos] | 147 |
| W32.IRCBot [Symantec] | 100 |
| Mal/Generic-A [Sophos] | 98 |
| Backdoor.Win32.IRCBot.csk [Kaspersky Lab] | 90 |
| TROJ_AGENT.AXAT [Trend Micro] | 54 |
| Generic.dx [McAfee] | 48 |
| VirTool.Win32.CeeInject [Ikarus] | 35 |
| IRC Trojan [Symantec] | 31 |
| VirTool:Win32/CeeInject.gen!J [Microsoft] | 28 |
| Backdoor.Win32.IRCBot.irl [Kaspersky Lab] | 27 |
| Troj/Inject-DA [Sophos] | 27 |
| Mal/Bckdr-C, Mal/Inject-M [Sophos] | 26 |
| Backdoor.Rbot [Ikarus] | 21 |
| IRC/Flood.mirc [McAfee] | 18 |
| not-a-virus:Client-IRC.Win32.mIRC.591 [Kaspersky Lab] | 18 |
| Backdoor:Win32/Rbot.gen [Microsoft] | 17 |
| W32.IRCBot.Gen [Symantec] | 16 |
| W32/Spybot.worm.gen [McAfee] | 16 |
| Generic BackDoor [McAfee] | 15 |
| Mal/UnkPack-Fam [Sophos] | 15 |
| WORM_RBOT.GEN-1 [Trend Micro] | 15 |
| Backdoor.Win32.Rbot.gen [Kaspersky Lab] | 14 |
| W32/Sdbot.worm.gen.g [McAfee] | 14 |
| not-a-virus.Keygen.Avast [Ikarus] | 13 |
| VirTool:Win32/CeeInject.B [Microsoft] | 13 |
| Backdoor.Win32.SdBot.kef [Kaspersky Lab] | 12 |
| W32/Sdbot.worm.gen.a [McAfee] | 12 |
| not-a-virus:Keygen.Adobe [Ikarus] | 11 |
| W32.Randex.gen [Symantec] | 11 |
| Worm:Win32/Pushbot.gen [Microsoft] | 11 |
| Generic PWS.y [McAfee] | 10 |
| Virus.Win32.IRCBot.BSX [Ikarus] | 10 |
| Win-Trojan/Xema.variant [AhnLab] | 10 |
| Virus.Win32.Trojan [Ikarus] | 9 |
| Win32/ExprPacked.suspicious [AhnLab] | 9 |
| Backdoor.Win32.IRCBot.grs [Kaspersky Lab] | 8 |
| Troj/DwnLdr-HLF [Sophos] | 8 |
| Trojan:Win32/Meredrop [Microsoft] | 8 |
| Worm:Win32/Neeris.gen!C [Microsoft] | 8 |
| Backdoor.Win32.IRCBot.hrx [Kaspersky Lab] | 7 |
| Backdoor:Win32/Poebot.gen [Microsoft] | 7 |
| Downloader [Symantec] | 7 |
| W32/Inject-DE [Sophos] | 7 |
| Backdoor.IRC.Bot [Symantec] | 6 |
| Backdoor.Win32.SdBot [Ikarus] | 6 |
| Backdoor.Win32.SdBot.eba [Kaspersky Lab] | 6 |
| Downloader.gen.a [McAfee] | 6 |
| Net-Worm.Win32.Kolab [Ikarus] | 6 |
| not-a-Virus.Keygen.Adobe [Ikarus] | 6 |
| Packer.Expressor [Ikarus] | 6 |
| Trojan.Win32.Crypt.gw [Kaspersky Lab] | 6 |
| Trojan:Win32/Ircbrute [Microsoft] | 6 |
| Trojan-Downloader.Win32.VB.erq [Kaspersky Lab] | 6 |
| TrojanDownloader:Win32/Small.gen!H [Microsoft] | 6 |
| Trojan-PWS.Win32.Agent [Ikarus] | 6 |
| TrojanSpy:Win32/Logsnif.FH [Microsoft] | 6 |
| VirTool.Win32.DelfInject [Ikarus] | 6 |
| W32/IRCbot.gen.a [McAfee] | 6 |
| W32/Rbot-Fam, W32/Rbot-Gen, Mal/Behav-134, Mal/Behav-024, Mal/AVKill-B, Mal/IRCBot-B [Sophos] | 6 |
| Win32/IRCBot.worm.Gen [AhnLab] | 6 |
| Backdoor.Win32.IRCBot.gnc [Kaspersky Lab] | 5 |
| Backdoor.Win32.Rbot.bzf [Kaspersky Lab] | 5 |
| Generic Downloader.x [McAfee] | 5 |
| Generic PUP.x [McAfee] | 5 |
| Mal/Behav-285 [Sophos] | 5 |
| Mal/EncPk-EX [Sophos] | 5 |
| Mal/Packer [Sophos] | 5 |
| Net-Worm.Win32.Kolab.bdk [Kaspersky Lab] | 5 |
| Net-Worm.Win32.Kolabc [Ikarus] | 5 |
| Troj/IRCBot-ADQ [Sophos] | 5 |
| Trojan Horse [Symantec] | 5 |
| Trojan-Downloader.Win32.Small [Ikarus] | 5 |
| Trojan-Dropper.Agent [Ikarus] | 5 |
| VirTool:Win32/Injector.gen!B [Microsoft] | 5 |
| W32/Rbot-Fam, Mal/Behav-024, Mal/IRCBot-B [Sophos] | 5 |
| Win32.SuspectCrc [Ikarus] | 5 |
| Backdoor.Win32.Nepoe.em [Kaspersky Lab] | 4 |
| Backdoor:Win32/Gaertob.A [Microsoft] | 4 |
| BKDR_IRCBOT.BAW [Trend Micro] | 4 |
| Generic Downloader.x!bf [McAfee] | 4 |
| Generic Dropper [McAfee] | 4 |
| IRC-Ibot [McAfee] | 4 |
| Mal/Behav-024, Mal/IRCBot-B [Sophos] | 4 |
| Mal/Behav-243 [Sophos] | 4 |
| MemScanRootkit.3315 [Ikarus] | 4 |
| Net-Worm.Win32.Kolab.bhq [Kaspersky Lab] | 4 |
| Troj/Agent-GDE [Sophos] | 4 |
| TROJ_DLOAD.DV [Trend Micro] | 4 |
| Trojan.Inject [Ikarus] | 4 |
| Trojan.Win32.Agent.ahqw [Kaspersky Lab] | 4 |
| Trojan.Win32.Agent2.dnp [Kaspersky Lab] | 4 |
| Trojan.Win32.Ircbrute [Ikarus] | 4 |