| Threat Alias | Number of Incidents |
| W32/Kespo.a [McAfee] | 21 |
| Virus.Win32.Nakuru.a [Kaspersky Lab] | 20 |
| Troj/Bckdr-QIX [Sophos] | 13 |
| Virus:Win32/Nakuru.A [Microsoft] | 13 |
| Backdoor.Delf [Symantec] | 10 |
| PE_KESPO.C [Trend Micro] | 9 |
| PE_NAKURU.A [Trend Micro] | 9 |
| W32.Tupofse.B!inf [Symantec] | 7 |
| Trojan-Dropper.Delf [Ikarus] | 5 |
| Virus.Win32.Nakuru.a [Ikarus] | 5 |
| Win-Trojan/Xema.variant [AhnLab] | 3 |
| Bloodhound.Unknown [Symantec] | 1 |
| PE_NAKURU.C [Trend Micro] | 1 |