| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Netsky |   | 35.68% | 1769725 |
| W32/Mydoom | | 18.18% | 901686 |
| W32/Bagle | | 14.21% | 704871 |
| W32/Mytob | | 9.1% | 451229 |
| W32/Virut | | 7.71% | 382556 |
| W32/Zafi | | 2.13% | 105798 |
| W32/Bagz | | 1.94% | 96169 |
| W32/Rontokbro | | 1.11% | 54937 |
| W32/Stration | | 0.92% | 45484 |
| W32/VB | | 0.88% | 43517 |
| W32/Lovgate | | 0.74% | 36496 |
| W32/Sality | | 0.71% | 35185 |
| W32/Rjump | | 0.69% | 34375 |
| W32/Parite | | 0.68% | 33773 |
| W32/Funner | | 0.48% | 23833 |
| VBS/Small | | 0.45% | 22085 |
| W32/Klez | | 0.38% | 18853 |
| W32/Jeefo | | 0.35% | 17237 |
| W32/Fono | | 0.3% | 14969 |
| W32/SirCam | | 0.26% | 12751 |
| W32/Sohanad | | 0.23% | 11616 |
| W32/Small | | 0.23% | 11278 |
| W32/Looked | | 0.22% | 11096 |
| W32/Perlovga | | 0.21% | 10237 |
| W32/Hakaglan | | 0.18% | 8878 |
| VBS/Butsur | | 0.17% | 8680 |
| W32/Nuwar | | 0.17% | 8651 |
| W32/Tenga | | 0.17% | 8187 |
| W32/Allaple | | 0.13% | 6240 |
| W32/Wukill | | 0.12% | 6075 |
| W32/Mabutu | | 0.12% | 6122 |
| W32/Yaha | | 0.1% | 4848 |
| VBS/Redlof | | 0.09% | 4595 |
| W32/Chir | | 0.09% | 4482 |
| W32/Alman | | 0.06% | 3198 |
| W32/Womble | | 0.06% | 3013 |
| W32/Pykse | | 0.05% | 2491 |
| W32/Sober | | 0.04% | 1823 |
| W32/Drowor | | 0.04% | 2203 |
| W32/Puce | | 0.04% | 2102 |
| W32/Sobig | | 0.03% | 1267 |
| W32/Bugbear | | 0.03% | 1538 |
| W32/Funlove | | 0.03% | 1278 |
| W32/Opaserv | | 0.03% | 1443 |
| W32/Oror | | 0.03% | 1494 |
| W32/Saburex | | 0.03% | 1452 |
| W32/Polip | | 0.02% | 1108 |
| W32/Spybot | | 0.02% | 930 |
| W32/Valla | | 0.02% | 1116 |
| VBS/Solow | | 0.02% | 1079 |
| W32/Banwarum | | 0.02% | 938 |
| W32/Plexus | | 0.02% | 833 |
| W32/Moonlight | | 0.02% | 1176 |
| W32/Maslan | | 0.02% | 1121 |
| W32/Detnat | | 0.01% | 331 |
| W32/Elkern | | 0.01% | 433 |
| ALS/Bursted | | 0.01% | 461 |
| W32/Darby | | 0.01% | 370 |
| W32/Banwor | | 0.01% | 274 |
| VBS/Soraci | | 0.01% | 516 |
| W32/Nimda | | 0.01% | 280 |
| W32/Swen | | 0.01% | 256 |
| W32/Dref | | 0.01% | 603 |
| W32/Braban | | 0.01% | 365 |
| W32/Dzan | | 0.01% | 157 |
| W32/Korgo | | 0.01% | 328 |
| W32/Expiro | | 0.01% | 382 |
| W32/Dumaru | | 0.01% | 505 |
| W32/Areses | | 0.01% | 498 |
| W32/Mkar | | 0.01% | 485 |
| W32/Sdbot | | 0.01% | 410 |
| W32/Wenna | | 0.01% | 484 |
| W32/Mypis | | 0.01% | 381 |
| W32/Vasor | | 0% | 43 |
| Titch | | 0% | 1 |
| W97M/Ethan | | 0% | 57 |
| W32/Randon | | 0% | 210 |
| W32/Kriz | | 0% | 58 |
| VBS/LoveLetter | | 0% | 168 |
| Class | | 0% | 15 |
| W95/Beast | | 0% | 1 |
| Onex | | 0% | 7 |
| W32/Gibe | | 0% | 8 |
| W32/Braid | | 0% | 1 |
| W32/Mapson | | 0% | 4 |
| Mumu | | 0% | 7 |
| W32/Fizzer | | 0% | 1 |
| Smack | | 0% | 8 |
| AntiEXE | | 0% | 1 |
| XF/Netsnake | | 0% | 23 |
| JS/Wonka | | 0% | 9 |
| W95/Lovesong | | 0% | 2 |
| W32/Forbot | | 0% | 6 |
| W32/Poebot | | 0% | 39 |
| Nottice | | 0% | 2 |
| W32/Apsiv | | 0% | 1 |
| W32/Antiman | | 0% | 53 |
| Winvir | | 0% | 1 |
| W32/Mimail | | 0% | 95 |
| W32/Tufik | | 0% | 125 |
The Virus Bulletin prevalence table is compiled monthly from virus reports received by Virus Bulletin; both directly, and from other companies who pass on their statistics.
Reports are included only if they are confirmed, and hence, in conjunction with the WildList, the prevalence table provides a useful indication of the relative prevalence of various virus found in the wild at the time.
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