| Threat Alias | Number of Incidents |
| IRC/Client [McAfee] | 198 |
| not-a-virus:Client-IRC.Win32.mIRC.603 [Kaspersky Lab] | 194 |
| Backdoor.IRCBot [PC Tools] | 165 |
| not-a-virus:Client-IRC.Win32.mIRC [Ikarus] | 123 |
| Win-Trojan/MircPack.1790464 [AhnLab] | 121 |
| IRC-Worm.Win32.Tedeto.a [Ikarus] | 24 |
| W32.Daprosy [Symantec] | 12 |
| Worm.Win32.AutoRun [Ikarus] | 12 |
| W32/Autorun.worm.h [McAfee] | 11 |
| W32.SillyFDC [Symantec] | 10 |
| Worm:Win32/Autorun.UD [Microsoft] | 9 |
| Backdoor.Bifrose [Symantec] | 8 |
| Backdoor:Win32/Bifrose.AE [Microsoft] | 8 |
| BackDoor-CEP.svr [McAfee] | 8 |
| Generic VB.b [McAfee] | 8 |
| New Malware.n [McAfee] | 8 |
| Trojan Horse [Symantec] | 8 |
| Trojan.PWS.Nilage.Gen.3 [PC Tools] | 8 |
| Backdoor.Win32.Poison.pg [Kaspersky Lab] | 6 |
| Backdoor:Win32/Poisonivy.H [Microsoft] | 6 |
| BackDoor-CEP.gen.g [McAfee] | 6 |
| BKDR_AHZE.NY [Trend Micro] | 6 |
| Mal/Behav-352, Mal/Midgar-A, Mal/EncPk-FH [Sophos] | 6 |
| Mal/Generic-A [Sophos] | 6 |
| Malware.Daprosy [PC Tools] | 6 |
| Virus.Trojan.Win32.Midgare [Ikarus] | 6 |
| W32.Setclo [Symantec] | 6 |
| W32/Autorun-AMS [Sophos] | 6 |
| Win-Trojan/Midgare.32256 [AhnLab] | 6 |
| Backdoor.Ciadoor [Symantec] | 5 |
| Infostealer.Gampass [Symantec] | 5 |
| Win-Trojan/Xema.variant [AhnLab] | 5 |
| Worm.Win32.VB.arz [Kaspersky Lab] | 5 |
| Worm.Win32.VB.bz [Kaspersky Lab] | 5 |
| W32/YahLover.worm.gen [McAfee] | 4 |
| BackDoor-DKI.gen.j [McAfee] | 3 |
| BackDoor-DSS.gen.a [McAfee] | 3 |
| New Win32 [McAfee] | 3 |
| P2P-Worm.Win32.Blaxe [Kaspersky Lab] | 3 |
| Troj/Keylog-JV [Sophos] | 3 |
| Trojan.Generic [PC Tools] | 3 |
| Virus.Win32.Agent.AAGI [Ikarus] | 3 |
| W32.HLLW.Blaxe [Symantec] | 3 |
| W32/Autorun.worm.i.gen [McAfee] | 3 |
| Win-Trojan/Poison.8192.AF [AhnLab] | 3 |
| Win-Trojan/Poison.9728.F [AhnLab] | 3 |
| Worm:Win32/Pushbot.gen [Microsoft] | 3 |
| Backdoor.Bifrose [PC Tools] | 2 |
| Backdoor.Rbot [Ikarus] | 2 |
| Backdoor.Win32.Bifrose [Ikarus] | 2 |
| Backdoor:Win32/Bifrose.ACI [Microsoft] | 2 |
| BKDR_BIFROSE.AFU [Trend Micro] | 2 |
| Generic VB [McAfee] | 2 |
| HackTool.Win32.VB.ng [Kaspersky Lab] | 2 |
| Infostealer [Symantec] | 2 |
| Mal/Airworm-A [Sophos] | 2 |
| Mal/Behav-236, Mal/TibsPk-D [Sophos] | 2 |
| Mal/Bifrose-G, Mal/Bifrose-D, Mal/Bifrose-A, Mal/Bifrose-E [Sophos] | 2 |
| Mal/EncPk-CI, Mal/Poison-A [Sophos] | 2 |
| Mal/Sohana-A [Sophos] | 2 |
| Mal/VB-AB, Mal/VB-W, Mal/Behav-211 [Sophos] | 2 |
| P2P-Worm.Blaxe!sd5 [PC Tools] | 2 |
| PE_BLUNE.B-O [Trend Micro] | 2 |
| PE_VIRUT.XI [Trend Micro] | 2 |
| TROJ_AGENT.AMAK [Trend Micro] | 2 |
| Trojan.DL.CKSPost.Gen [PC Tools] | 2 |
| Trojan.Win32.Agent.bcn [Kaspersky Lab] | 2 |
| Trojan-Dropper.Delf [Ikarus] | 2 |
| Trojan-Dropper.Win32.VB.aelb [Kaspersky Lab] | 2 |
| Virus.Win32.Bifrose [Ikarus] | 2 |
| Virus.Win32.Poison [Ikarus] | 2 |
| Virus.Win32.VB.he [Kaspersky Lab] | 2 |
| Virus.Win32.VB.p [Kaspersky Lab] | 2 |
| Virus.Win32.Virut.n [Kaspersky Lab] | 2 |
| W32.Blune [Symantec] | 2 |
| W32.Virut.R [Symantec] | 2 |
| W32/Autorun.worm.gen.cl [McAfee] | 2 |
| W32/Generic.b [McAfee] | 2 |
| W32/Scribble-B [Sophos] | 2 |
| W32/Vetor-A [Sophos] | 2 |
| W32/Virut.gen [McAfee] | 2 |
| W32/Winur.worm.gen [McAfee] | 2 |
| Win32.Virut.Gen [PC Tools] | 2 |
| Win32/Autorun.worm.318797 [AhnLab] | 2 |
| Win32/Virut.F [AhnLab] | 2 |
| Worm.VB!sd5 [PC Tools] | 2 |
| Worm.Win32.AutoRun.ausp [Kaspersky Lab] | 2 |
| Worm.Win32.AutoRun.bni [Kaspersky Lab] | 2 |
| Worm.Win32.AutoRun.dfs [Kaspersky Lab] | 2 |
| Worm.Win32.VB.fs [Kaspersky Lab] | 2 |
| Worm:Win32/Autorun [Microsoft] | 2 |
| Worm:Win32/Autorun.HR [Microsoft] | 2 |
| WORM_AUTORUN.BNG [Trend Micro] | 2 |
| WORM_BLAXE.A [Trend Micro] | 2 |
| WORM_VB.CDW [Trend Micro] | 2 |
| Backdoor.Bifrose.EZC [PC Tools] | 1 |
| Backdoor.Trojan [Symantec] | 1 |
| Backdoor.Win32.Delf.cbj [Kaspersky Lab] | 1 |
| Backdoor:Win32/Agent.CQ [Microsoft] | 1 |
| BKDR_IRCBOT.GO [Trend Micro] | 1 |