| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Opaserv |   | 28.91% | 346.91 |
| W32/Sobig | | 21.34% | 256.13 |
| W32/Klez | | 13.40% | 160.75 |
| W32/Mimail | | 5.82% | 69.8 |
| W95/Dupator | | 4.57% | 54.85 |
| W32/Bugbear | | 4.27% | 51.3 |
| W32/Gibe | | 3.84% | 46.08 |
| W32/Dumaru | | 3.55% | 42.65 |
| W32/Yaha | | 2.62% | 31.42 |
| W32/Funlove | | 1.67% | 20.08 |
| W32/Swen | | 1.40% | 16.83 |
| W32/Lirva | | 1.09% | 13.02 |
| W95/Spaces | | 1.00% | 12.03 |
| W32/Magistr | | 0.72% | 8.67 |
| W32/Sober | | 0.56% | 6.77 |
| W32/Fizzer | | 0.55% | 6.6 |
| W32/SirCam | | 0.47% | 5.65 |
| VBS/Redlof | | 0.44% | 5.27 |
| W32/Nachi | | 0.32% | 3.88 |
| W32/Nimda | | 0.27% | 3.21 |
| W32/Lovgate | | 0.22% | 2.66 |
| W32/Hybris | | 0.20% | 2.45 |
| W32/BadTrans | | 0.17% | 2.08 |
| W32/Ganda | | 0.17% | 2.02 |
| W95/Lorez | | 0.16% | 1.87 |
| W32/Kriz | | 0.14% | 1.62 |
| JS/Fortnight | | 0.13% | 1.58 |
| XM/Laroux | | 0.12% | 1.43 |
| W95/CIH | | 0.12% | 1.39 |
| W32/Frethem | | 0.11% | 1.34 |
| W32/Deborm | | 0.11% | 1.31 |
| W32/Lovsan | | 0.11% | 1.31 |
| W32/Parite | | 0.08% | 0.94 |
| W32/Holar | | 0.07% | 0.84 |
| W32/Elkern | | 0.06% | 0.73 |
| W32/Lovelorn | | 0.05% | 0.6 |
| W32/Spybot | | 0.05% | 0.57 |
| W32/Valla | | 0.05% | 0.56 |
| W95/Whog | | 0.05% | 0.56 |
| W32/Mofei | | 0.05% | 0.54 |
| W32/Braid | | 0.04% | 0.51 |
| W97M/Marker | | 0.03% | 0.39 |
| JS/Kak | | 0.03% | 0.35 |
| W32/Oror | | 0.03% | 0.33 |
| Divi | | 0.03% | 0.31 |
| W32/Gaobot | | 0.03% | 0.3 |
| W32/MTX | | 0.02% | 0.28 |
| W32/Mylife | | 0.02% | 0.27 |
| VBS/LoveLetter | | 0.02% | 0.26 |
| W32/Deloder | | 0.02% | 0.26 |
| Mumu | | 0.02% | 0.25 |
| W32/Cabanas | | 0.02% | 0.22 |
| W95/Ilmx | | 0.02% | 0.22 |
| W32/Kovar | | 0.02% | 0.22 |
| W32/Torvil | | 0.02% | 0.21 |
| Tristate | | 0.02% | 0.19 |
| W32/Sdbot | | 0.02% | 0.18 |
| VBS/Haptime | | 0.02% | 0.18 |
| W32/Sluter | | 0.02% | 0.18 |
| WYX | | 0.01% | 0.17 |
| W32/Pate | | 0.01% | 0.15 |
| W97M/Ethan | | 0.01% | 0.14 |
| W32/Aliz | | 0.01% | 0.14 |
| W95/Bumble | | 0.01% | 0.14 |
| W32/Datom | | 0.01% | 0.14 |
| Netlog | | 0.01% | 0.13 |
| WelcomB | | 0.01% | 0.13 |
| W95/Bodgy | | 0.01% | 0.13 |
| Form | | 0.01% | 0.12 |
| W32/Hantaner | | 0.01% | 0.12 |
| AntiCMOS | | 0.01% | 0.12 |
| W32/Mapson | | 0.01% | 0.11 |
| Cap | | 0.01% | 0.11 |
| W32/Debom | | 0.01% | 0.11 |
| Flea | | 0.01% | 0.1 |
| W97M/Thus | | 0.01% | 0.1 |
| W95/Kuang | | 0.01% | 0.1 |
| W32/CodeRed | | 0.01% | 0.09 |
| Class | | 0.01% | 0.08 |
| W32/Goner | | 0.01% | 0.08 |
| Parity Boot | | 0.01% | 0.08 |
| IEStart | | 0.01% | 0.08 |
| W32/BleBla | | 0.01% | 0.08 |
| W32/Ska | | 0.01% | 0.08 |
| W32/Jeefo | | 0.01% | 0.07 |
| W32/Winur | | 0.01% | 0.07 |
| W32/Randex | | 0.01% | 0.07 |
| W32/Kwbot | | 0.01% | 0.07 |
| W95/Weird | | 0.01% | 0.07 |
| W32/FBound | | 0.01% | 0.07 |
| SQL/Slammer | | 0.01% | 0.07 |
| W32/Randon | | 0.01% | 0.06 |
| W32/KWBot | | 0.01% | 0.06 |
| W32/Slanper | | 0.01% | 0.06 |
| W32/Cult | | 0.01% | 0.06 |
| Eight941 | | 0.01% | 0.06 |
| Nsi | | 0.01% | 0.06 |
| VCX | | 0.01% | 0.06 |
| W32/Marburg | | 0.01% | 0.06 |
| W32/IRCBounce | | 0.01% | 0.06 |
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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