| Threat Alias | Number of Incidents |
| not-a-virus:Client-IRC.Win32.mIRC.603 [Kaspersky Lab] | 146 |
| Backdoor.IRC.Zapchast.zwrc [Kaspersky Lab] | 129 |
| Backdoor.IRC.Zapchast [Ikarus] | 50 |
| Trojan.BAT.Runner.i [Kaspersky Lab] | 48 |
| not-a-virus:Client-IRC.Win32.mIRC.601 [Kaspersky Lab] | 47 |
| Trojan.mIRC-Based.AM [PC Tools] | 44 |
| Backdoor.IRC.Zapchast [Kaspersky Lab] | 38 |
| Trojan.Dropper [PC Tools] | 36 |
| Backdoor.Win32.IRCFlood [Ikarus] | 31 |
| Backdoor.IRC.Zapchast.g [Kaspersky Lab] | 29 |
| not-a-virus:Client-IRC.Win32.mIRC [Ikarus] | 28 |
| IRC Trojan [Symantec] | 23 |
| Trojan.Agent.EQEK [PC Tools] | 21 |
| Backdoor.IRC.Zapchast.zwrc [PC Tools] | 19 |
| Backdoor.IRC.Zapchast.j [Kaspersky Lab] | 17 |
| Backdoor.MIRC-based.X [PC Tools] | 15 |
| Trojan.BAT.Runner.i [Ikarus] | 15 |
| Backdoor.Cloner.BI [Ikarus] | 14 |
| Generic BackDoor [McAfee] | 9 |
| IRC-Worm.Win32.Tedeto.a [Ikarus] | 8 |
| Backdoor.IRC.Zapchast.zwre [Kaspersky Lab] | 6 |
| Trojan.IRC-Backdoor [PC Tools] | 6 |
| Generic.dx [McAfee] | 5 |
| Virus.Win32.Parite.b [Kaspersky Lab] | 5 |
| Backdoor.Trojan [PC Tools] | 4 |
| Backdoor.Zapchast [Ikarus] | 4 |
| IRC.Flood.CI [PC Tools] | 4 |
| IRC/Flood.gen.dr [McAfee] | 4 |
| Backdoor.IRC.Zapchast.f [Kaspersky Lab] | 3 |
| Generic PUP.z [McAfee] | 3 |
| not-a-virus:Client-IRC.Win32.mIRC.621 [Kaspersky Lab] | 3 |
| not-a-virus:Client-IRC.Win32.mIRC.631 [Kaspersky Lab] | 3 |
| Trojan.BAT.Runner [Ikarus] | 3 |
| Trojan.Dropper [Symantec] | 3 |
| Trojan.IRC.Zapchast.K#1 [Ikarus] | 3 |
| Trojan.Zapchast [PC Tools] | 3 |
| Virus.Win32.Zapchast.CR [Ikarus] | 3 |
| Backdoor.IRCBot [PC Tools] | 2 |
| Backdoor.Win32.mIRC-based [Kaspersky Lab] | 2 |
| Backdoor.Zapchast.EI [PC Tools] | 2 |
| Dropper/Zapchast.974240 [AhnLab] | 2 |
| Generic BackDoor!d [McAfee] | 2 |
| IRC.Flood.BU [PC Tools] | 2 |
| IRC.Zapchast [Ikarus] | 2 |
| IRC.Zapchast.AQ [PC Tools] | 2 |
| IRC.Zapchast.AS [PC Tools] | 2 |
| not-a-virus:Client-IRC.Win32.mIRC.60 [Kaspersky Lab] | 2 |
| not-a-virus:RiskTool.Win32.HideWindows [Kaspersky Lab] | 2 |
| Virus.Win32.Drowor.a [Kaspersky Lab] | 2 |
| W32.Mumawow.F!inf [Symantec] | 2 |
| Win-Trojan/Agent.949984 [AhnLab] | 2 |
| Backdoor.IRC.Agent.b [Kaspersky Lab] | 1 |
| Backdoor.IRC.Aladinz [Symantec] | 1 |
| Backdoor.IRC.Zapchast [PC Tools] | 1 |
| Backdoor.IRC.Zapchast.h [Kaspersky Lab] | 1 |
| Backdoor.IRC.Zapchast.i [Kaspersky Lab] | 1 |
| Backdoor.IRC.Zapchast.k [Kaspersky Lab] | 1 |
| Backdoor.mIRC-Based.AB [PC Tools] | 1 |
| Dropper/Agent.1220240 [AhnLab] | 1 |
| Dropper/Malware.779111 [AhnLab] | 1 |
| Dropper/Malware.862127 [AhnLab] | 1 |
| Dropper/Malware.944576 [AhnLab] | 1 |
| Dropper/Zapchast.1102206 [AhnLab] | 1 |
| Dropper/Zapchast.875652 [AhnLab] | 1 |
| Generic BackDoor!fz [McAfee] | 1 |
| Generic BackDoor!zr [McAfee] | 1 |
| Generic Dropper [McAfee] | 1 |
| Generic Dropper!c [McAfee] | 1 |
| Generic PUP.x [McAfee] | 1 |
| IRC.Backdoor.Trojan [Symantec] | 1 |
| IRC.BNC.N [PC Tools] | 1 |
| IRC.Cloner [Ikarus] | 1 |
| IRC.Flood.BM [PC Tools] | 1 |
| IRC/Flood.b!a [McAfee] | 1 |
| IRC/Flood.dr [McAfee] | 1 |
| not-a-virus:Client-IRC.Win32.mIRC.59 [Kaspersky Lab] | 1 |
| not-a-virus:Client-IRC.Win32.mIRC.614 [Kaspersky Lab] | 1 |
| not-a-virus:Client-IRC.Win32.mIRC.62 [Kaspersky Lab] | 1 |
| not-a-virus:RemoteAdmin.Win32.RAdmin [Ikarus] | 1 |
| not-a-virus:RemoteAdmin.Win32.RAdmin.20 [Kaspersky Lab] | 1 |
| not-a-virus:RemoteAdmin.Win32.RAdmin.21 [Kaspersky Lab] | 1 |
| RiskTool.HideWindows.AB [PC Tools] | 1 |
| TROJ_ZAPCHAST.CQ [Trend Micro] | 1 |
| TROJ_ZAPCHAST.ED [Trend Micro] | 1 |
| Trojan.BAT.Runner.S [PC Tools] | 1 |
| Trojan.IRC.Flood.ISC [Ikarus] | 1 |
| Trojan.IRCBot [PC Tools] | 1 |
| Trojan.Script [Ikarus] | 1 |
| Trojan.WinREG [Ikarus] | 1 |
| Trojan.WinREG.RunKeys.e [Kaspersky Lab] | 1 |
| Virus.Win32.Hidrag.A [Ikarus] | 1 |
