| Threat Alias | Number of Incidents |
| W32/Chir.b@MM [McAfee] | 578 |
| Email-Worm.Win32.Runouce.b [Kaspersky Lab] | 574 |
| W32/Chir-B [Sophos] | 571 |
| W32.Chir.B@mm [Symantec] | 485 |
| PE_Chir.B-O [Trend Micro] | 317 |
| I-Worm.Chir.B [PC Tools] | 308 |
| PE_Chir.B [Trend Micro] | 257 |
| JS.Chir.B [PC Tools] | 168 |
| Email-Worm.Win32.Runouce.B [Ikarus] | 164 |
| Email-Worm.Win32.Runouce [Ikarus] | 110 |
| Win32/ChiHack.worm.10748 [AhnLab] | 97 |
| Win32/ChiHack.6652 [AhnLab] | 88 |
| W32.Rontokbro.X@mm [Symantec] | 47 |
| Email-Worm.Win32.Brontok.N [Ikarus] | 28 |
| Worm.Brontok.Gen!Pac.3 [PC Tools] | 27 |
| Email-Worm.Runouce!sd5 [PC Tools] | 16 |
| W32.SillyFDC [Symantec] | 16 |
| Email-Worm.Runonce!ct [PC Tools] | 8 |
| Backdoor.Win32.Bifrose [Ikarus] | 6 |
| Backdoor.Bifrose.EZC [PC Tools] | 5 |
| Trojan.Crypt [Ikarus] | 5 |
| Worm.AutoIT.V [PC Tools] | 5 |
| Worm.Win32.VB.cj [Ikarus] | 5 |
| PE_CHIR.DAM [Trend Micro] | 4 |
| Trojan.Win32.VB [Ikarus] | 4 |
| Trojan-Banker.Win32.Banker [Ikarus] | 4 |
| Virus.Win32.Bifrose [Ikarus] | 4 |
| W32.Rajump [Symantec] | 4 |
| W32.SillyDC [Symantec] | 4 |
| W32/Scribble-B [Sophos] | 4 |
| W32/Virut.n.gen [McAfee] | 4 |
| Trojan.Autoit [Ikarus] | 3 |
| Trojan.Win32.Agent [Ikarus] | 3 |
| Trojan.Win32.Midgare [Ikarus] | 3 |
| Trojan-Dropper.Delf [Ikarus] | 3 |
| Virus.Win32.AutoRun.vc [Ikarus] | 3 |
| Virus.Win32.Hakaglan [Ikarus] | 3 |
| W32.Dizan [Symantec] | 3 |
| W32.Rontokbro@mm [Symantec] | 3 |
| Email-Worm.Chir [PC Tools] | 2 |
| Generic VB.b [McAfee] | 2 |
| Trojan.Agent.VYJ [PC Tools] | 2 |
| Trojan.Midgare.hhn [PC Tools] | 2 |
| Trojan-Downloader.Win32.Small [Ikarus] | 2 |
| Virus.Win32.KillFiles.058 [Ikarus] | 2 |
| W32.Blastclan [Symantec] | 2 |
| W32.Imaut [Symantec] | 2 |
| W32.Imaut.N [Symantec] | 2 |
| W32.Redlofwen [Symantec] | 2 |
| Win32.Sality.AA.Gen [PC Tools] | 2 |
| Win32.Virut.Gen.4 [PC Tools] | 2 |
| Worm.Hakaglan.B [PC Tools] | 2 |
| Worm.VB.VLL [PC Tools] | 2 |
| Worm.VB.WKJ [PC Tools] | 2 |
| Worm.Win32.VB.cz [Ikarus] | 2 |
| WORM_VB.CIU [Trend Micro] | 2 |
| Backdoor.Win32.Beastdoor [Ikarus] | 1 |
| Email-Worm.Win32.Brontok.A [Ikarus] | 1 |
| Email-Worm.Win32.Generic [Ikarus] | 1 |
| Email-Worm.Win32.Womble.i [Ikarus] | 1 |
| Generic.dx [McAfee] | 1 |
| Infostealer.QQRob.A [Symantec] | 1 |
| I-Worm.Brontok.ER [PC Tools] | 1 |
| I-Worm.Rays.F [PC Tools] | 1 |
| I-Worm.Womble.B1 [PC Tools] | 1 |
| Mal/VBWorm-C [Sophos] | 1 |
| Mal/VBWorm-C, W32/Chir-B [Sophos] | 1 |
| P2P-Worm.Win32.SpyBot [Ikarus] | 1 |
| PE_VIRUT.XS [Trend Micro] | 1 |
| Trojan.Agent.ECMZ [PC Tools] | 1 |
| Trojan.Astry [Symantec] | 1 |
| Trojan.Banker.Delf.YKG [Ikarus] | 1 |
| Trojan.DL.AutoIt.DO [PC Tools] | 1 |
| Trojan.DL.Small.MV [PC Tools] | 1 |
| Trojan.DR.CKSPost.C [PC Tools] | 1 |
| Trojan.DR.Small.MV [PC Tools] | 1 |
| Trojan.Hider.G [PC Tools] | 1 |
| Trojan.VB.EPP [PC Tools] | 1 |
| Trojan.VB.XYJ [PC Tools] | 1 |
| Trojan.VB.YDS [PC Tools] | 1 |
| Trojan.VB.ZBW [PC Tools] | 1 |
| Trojan.Win32.VB.atg [Kaspersky Lab] | 1 |
| Trojan-Dropper.Agent [Ikarus] | 1 |
| Trojan-Dropper.Vb.1 [Ikarus] | 1 |
| Trojan-Dropper.Win32.Delf [Ikarus] | 1 |
| Trojan-PWS.Win32.OnLineGames [Ikarus] | 1 |
| Trojan-Spy.Win32.Agent.bcm [Ikarus] | 1 |
| Trojan-Spy.Win32.Ardamax [Ikarus] | 1 |
| Trojan-Spy.Win32.Banbra [Ikarus] | 1 |
| Trojan-Spy.Win32.Webmoner [Ikarus] | 1 |
| VirTool.Win32.DelfInject [Ikarus] | 1 |
| Virus.W32.Sality [Ikarus] | 1 |
| Virus.Win32.Agent.OYJ [Ikarus] | 1 |
| Virus.Win32.AutoRun.jq [Ikarus] | 1 |
| Virus.Win32.Downloader.BVK [Ikarus] | 1 |
| Virus.Win32.FakeAlert.S [Ikarus] | 1 |
| Virus.Win32.Folcom.b [Kaspersky Lab] | 1 |
| Virus.Win32.Texel.i [Kaspersky Lab] | 1 |
| Virus.Win32.VB.bb [Ikarus] | 1 |
| Virus.Win32.VB.KZ [Ikarus] | 1 |