| Threat Alias | Number of Incidents |
| Rootkit.Win32.Agent [Ikarus] | 3,055 |
| Mal/Generic-A [Sophos] | 3,005 |
| Generic.dx!gzf [McAfee] | 2,499 |
| Trojan Horse [Symantec] | 2,499 |
| VirTool:WinNT/Koobface.gen!D [Microsoft] | 2,499 |
| Rootkit.Win32.Agent.wqv [Kaspersky Lab] | 2,448 |
| Trojan.Generic [PC Tools] | 1,632 |
| Win-Trojan/Agent.59520.D [AhnLab] | 663 |
| Hacktool.Rootkit [Symantec] | 548 |
| Rootkit.Win32.Agent.ucy [Kaspersky Lab] | 521 |
| Rootkit.Win32.Agent.adah [Kaspersky Lab] | 440 |
| Win-Trojan/Rootkit.59264 [AhnLab] | 440 |
| Hacktool.Rootkit [PC Tools] | 438 |
| Generic.dx!lre [McAfee] | 374 |
| VirTool:WinNT/Koobface.G [Microsoft] | 308 |
| Generic.dx!fwa [McAfee] | 180 |
| W32.Koobface.A [Symantec] | 144 |
| VirTool:WinNT/Koobface.E [Microsoft] | 97 |
| Win-Trojan/Agent.56064 [AhnLab] | 96 |
| Net-Worm.Koobface [PC Tools] | 72 |
| Rootkit.Win32.Agent.vir [Kaspersky Lab] | 48 |
| Win-Trojan/Agent.35968.E [AhnLab] | 20 |
| Generic.dx!fpw [McAfee] | 11 |
| Trojan.Win32.Agent.cwzr [Kaspersky Lab] | 2 |
| VirTool:WinNT/Koobface.D [Microsoft] | 2 |
| W32/Koobface.worm.gen.e [McAfee] | 2 |
| Win-Trojan/Agent.37632.E [AhnLab] | 2 |
| Worm.Win32.Koobface [Ikarus] | 2 |