| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Bagle |   | 27.11% | 2759124 |
| W32/Netsky | | 22.63% | 2303735 |
| W32/Mytob | | 18.84% | 1917862 |
| W32/MyWife | | 7.46% | 759774 |
| W32/Virut | | 3.96% | 402786 |
| W32/Lovgate | | 3.94% | 400973 |
| W32/Zafi | | 3.21% | 326987 |
| W32/Mydoom | | 1.45% | 147631 |
| W32/Sober | | 1.39% | 141590 |
| W32/Bagz | | 1.28% | 130778 |
| W32/Stration | | 1.05% | 107232 |
| W32/Rontokbro | | 0.94% | 95264 |
| W32/VB | | 0.78% | 79171 |
| W32/Perlovga | | 0.62% | 62857 |
| W32/Parite | | 0.58% | 59342 |
| W32/Jeefo | | 0.53% | 54184 |
| W32/Rjump | | 0.48% | 49040 |
| VBS/Small | | 0.45% | 45743 |
| W32/Funlove | | 0.42% | 42846 |
| W32/Klez | | 0.24% | 24916 |
| W32/Looked | | 0.24% | 23932 |
| VBS/Butsur | | 0.24% | 24928 |
| W32/Nuwar | | 0.23% | 23217 |
| W32/Fujacks | | 0.22% | 22380 |
| W32/Sality | | 0.15% | 15649 |
| W32/Mabutu | | 0.14% | 14285 |
| W32/Rbot | | 0.12% | 12251 |
| W32/Allaple | | 0.11% | 10747 |
| W32/Tenga | | 0.11% | 11122 |
| W32/Sohanad | | 0.1% | 10654 |
| W32/Sdbot | | 0.1% | 10525 |
| W32/IRCbot | | 0.07% | 7549 |
| W32/Bugbear | | 0.07% | 7376 |
| VBS/Redlof | | 0.06% | 6547 |
| W32/Chir | | 0.05% | 5149 |
| W32/Womble | | 0.05% | 4780 |
| W32/Elkern | | 0.03% | 3430 |
| W32/Opaserv | | 0.03% | 3158 |
| W32/Oror | | 0.03% | 3056 |
| W32/Grum | | 0.03% | 2699 |
| W32/Snapper | | 0.03% | 2604 |
| VBS/Areses | | 0.03% | 2587 |
| W32/Banwarum | | 0.02% | 2298 |
| W32/Magistr | | 0.02% | 1917 |
| W32/Yaha | | 0.02% | 1819 |
| W32/Maslan | | 0.02% | 1996 |
| W97M/Ethan | | 0.01% | 642 |
| W32/Polip | | 0.01% | 1291 |
| W32/Detnat | | 0.01% | 659 |
| ALS/Bursted | | 0.01% | 1160 |
| W32/Darby | | 0.01% | 1200 |
| VBS/Soraci | | 0.01% | 770 |
| W32/Nimda | | 0.01% | 564 |
| Buendia | | 0.01% | 86 |
| Zeitung | | 0.01% | 19 |
| W32/Lovelorn | | 0.01% | 794 |
| W32/Valla | | 0.01% | 1111 |
| VBS/Solow | | 0.01% | 584 |
| W32/Korgo | | 0.01% | 1490 |
| W32/Dumaru | | 0.01% | 799 |
| W32/Areses | | 0.01% | 964 |
| W32/Reatle | | 0.01% | 774 |
| W32/Alman | | 0.01% | 579 |
| W32/Mkar | | 0.01% | 868 |
| W32/Plexus | | 0.01% | 678 |
| W32/Feebs | | 0.01% | 1284 |
| W32/Agobot | | 0.01% | 739 |
| W32/Moonlight | | 0.01% | 1158 |
| W32/Rinbot | | 0.01% | 1076 |
| W32/Mypis | | 0.01% | 1036 |
| W32/Vesser | | 0% | 7 |
| W32/Vasor | | 0% | 35 |
| W32/Randon | | 0% | 253 |
| W32/Kriz | | 0% | 187 |
| VBS/LoveLetter | | 0% | 179 |
| Class | | 0% | 3 |
| W32/AHKheap | | 0% | 93 |
| W32/Sobig | | 0% | 135 |
| W32/Gibe | | 0% | 44 |
| W32/Fizzer | | 0% | 7 |
| Smack | | 0% | 1 |
| XF/Netsnake | | 0% | 22 |
| W32/Forbot | | 0% | 41 |
| W32/Antiman | | 0% | 116 |
| W32/Mimail | | 0% | 133 |
| W32/Codbot | | 0% | 72 |
| W97M/Nometz | | 0% | 22 |
| W32/Vanbot | | 0% | 107 |
| W32/Vetor | | 0% | 126 |
| W97M/Marker | | 0% | 151 |
| W32/Arequipa | | 0% | 33 |
| W32/Spybot | | 0% | 274 |
| W32/Cabanas | | 0% | 28 |
| Melissa | | 0% | 37 |
| W32/Swen | | 0% | 249 |
| W32/Dref | | 0% | 426 |
| W95/Tenrobot | | 0% | 317 |
| W32/Funner | | 0% | 26 |
| W32/Mofei | | 0% | 224 |
| W32/Traxg | | 0% | 164 |
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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