| Threat Alias | Number of Incidents |
| IRC Trojan [Symantec] | 175 |
| Backdoor.IRC.Zapchast [Kaspersky Lab] | 166 |
| W32/Zapchas-DW [Sophos] | 72 |
| IRC_Generic.CON [Trend Micro] | 70 |
| mIRC/Zapchast [AhnLab] | 53 |
| Backdoor.IRC.Zapchast [Ikarus] | 46 |
| Backdoor.mIRC [PC Tools] | 31 |
| IRC/Flood.gen.c [McAfee] | 27 |
| IRC/Flood.c [McAfee] | 24 |
| Troj/IRCFlood-O [Sophos] | 22 |
| Backdoor:IRC/Flood.BZ [Microsoft] | 18 |
| Backdoor.Ircflood [Ikarus] | 17 |
| TROJ_Generic [Trend Micro] | 12 |
| IRC_Generic [Trend Micro] | 7 |
| Net-Worm.Win32.Randon [Kaspersky Lab] | 7 |
| IRC/Flood.fc [McAfee] | 6 |
| not-a-virus:Client-IRC.Win32.mIRC.603 [Kaspersky Lab] | 6 |
| PE_Generic [Trend Micro] | 6 |
| Backdoor:IRC/Cloner.gen [Microsoft] | 5 |
| Backdoor:IRC/Tagbot.A [Microsoft] | 5 |
| VBS/Zapchast [AhnLab] | 5 |
| Backdoor.IRC.Cloner [Ikarus] | 4 |
| not-a-virus:RiskTool.Win32.HideWindows [Kaspersky Lab] | 4 |
| Trojan.Win32.Runner.x [Kaspersky Lab] | 4 |
| Net-Worm.Win32.Randon [Ikarus] | 3 |
| not-a-virus:NetTool.Win32.Sniffer.c [Kaspersky Lab] | 3 |
| not-a-virus:PSWTool.Win32.PassView.162 [Kaspersky Lab] | 3 |
| VBS/Ircflood [AhnLab] | 3 |
| Backdoor.IRC.Flood [Kaspersky Lab] | 2 |
| Backdoor:IRC/Flood.gen [Microsoft] | 2 |
| Backdoor:IRC/Tagbot.E [Microsoft] | 2 |
| BKDR_Generic [Trend Micro] | 2 |
| BKDR_Generic.CON [Trend Micro] | 2 |
| IRC.Backdoor.Trojan [Symantec] | 2 |
| IRC_FLOOD.MT [Trend Micro] | 2 |
| mIRC/Flood [AhnLab] | 2 |
| Net-Worm.Win32.Randon.a [Kaspersky Lab] | 2 |
| Troj/Progent-AF [Sophos] | 2 |
| VBS/Randon [AhnLab] | 2 |
| Backdoor.IRC.Flood [Symantec] | 1 |
| Backdoor.IRC.Zapchast.a [Kaspersky Lab] | 1 |
| Backdoor.Trojan [Symantec] | 1 |
| IRC/Generic Flooder [McAfee] | 1 |
| IRC-Worm.Win32.Tedeto.a [Ikarus] | 1 |
| Net-Worm.Win32.Randon.ar [Kaspersky Lab] | 1 |
| not-a-virus:Client-IRC.Win32.mIRC.601 [Kaspersky Lab] | 1 |
| WORM_Generic [Trend Micro] | 1 |
