| Threat Alias | Number of Incidents |
| Generic component [McAfee] | 12,393 |
| Backdoor.IRC.Flood [Symantec] | 11,826 |
| Backdoor.IRC.Zapchast.zwrc [Kaspersky Lab] | 10,402 |
| Backdoor.IRC.Zapchast [Ikarus] | 10,296 |
| Backdoor.IRC.Zapchast [PC Tools] | 3,483 |
| BAT/Zapchast [AhnLab] | 2,511 |
| Backdoor.Zapchast [Ikarus] | 651 |
| not-a-virus:Client-IRC.Win32.mIRC.603 [Kaspersky Lab] | 58 |
| Mal/Zapchas-A [Sophos] | 44 |
| Backdoor.IRC.Zapchast.g [Kaspersky Lab] | 20 |
| Backdoor.Win32.IRCFlood [Ikarus] | 11 |
| not-a-virus:Client-IRC.Win32.mIRC [Ikarus] | 10 |
| Backdoor.IRC.Zapchast.j [Kaspersky Lab] | 8 |
| Generic BackDoor [McAfee] | 4 |
| Generic.dx [McAfee] | 3 |
| IRC Trojan [Symantec] | 3 |
| IRC-Worm.Win32.Tedeto.a [Ikarus] | 3 |
| Backdoor.IRC.Zapchast.zwrc [PC Tools] | 2 |
| Trojan.Dropper [Symantec] | 2 |
| Backdoor.IRC.Aladinz [Symantec] | 1 |
| BKDR_IRCBOT.AYI [Trend Micro] | 1 |
| Dropper/Zapchast.974240 [AhnLab] | 1 |
| IRC/Flood.b!a [McAfee] | 1 |
| PE_SALITY.JER [Trend Micro] | 1 |
| TROJ_DROPPER.IAW [Trend Micro] | 1 |
| Virus.Win32.Sality [Ikarus] | 1 |
| Virus.Win32.Sality.aa [Kaspersky Lab] | 1 |
| Virus:Win32/Sality.AM [Microsoft] | 1 |
| W32.Sality.AE [Symantec] | 1 |
| W32/Sality.gen [McAfee] | 1 |
| W32/Sality-AM [Sophos] | 1 |
| Win-Trojan/Agent.949984 [AhnLab] | 1 |