Virus Prevalence - October 2004

Virus NamePrevalencePercentageInstances
W32/Netsky74.35% 148405
W32/Bagle21.19% 42291
W32/Bagz0.67% 1339
W32/Zafi0.57% 1138
W32/Mabutu0.48% 963
W32/Funlove0.47% 930
W32/Dumaru0.42% 842
W32/Mydoom0.34% 686
W32/Klez0.25% 495
W32/Lovgate0.18% 364
W32/Valla0.16% 312
W32/Mimail0.1% 193
W32/Bugbear0.1% 208
W32/Swen0.09% 177
W32/MyWife0.08% 161
W32/Elkern0.05% 104
VBS/Redlof0.05% 95
W32/Parite0.05% 102
W32/Fizzer0.04% 79
W32/Mota0.04% 78
W95/Spaces0.04% 71
W32/Kriz0.03% 67
W32/Hybris0.03% 59
W32/Yaha0.03% 67
W95/Tenrobot0.02% 33
W32/Magistr0.02% 34
W32/BadTrans0.01% 26
W32/Sobig0.01% 17
Mumu0.01% 12
W32/Nimda0.01% 14
W32/Lovelorn0.01% 10
W32/Nachi0.01% 17
W32/Chir0.01% 10
W32/Plexus0.01% 25
W32/Buchon0.01% 11
W32/Evaman0.01% 23
W95/CIH0.01% 11
W32/Gaobot0.01% 10
W97M/Ethan0% 3
Internal0% 5
Netlog0% 1
VBS/LoveLetter0% 4
Form0% 3
W32/Braid0% 1
W32/Sober0% 1
W32/Darby0% 7
W32/Aliz0% 2
VBS/Soraci0% 3
Junkie0% 1
IEStart0% 1
WYX0% 7
JS/Kak0% 1
W32/Funner0% 1
W32/Mofei0% 2
W32/Opaserv0% 4
W32/MTX0% 3
W32/Korgo0% 4
Cap0% 1
Cascade0% 1
W32/SirCam0% 6
W95/Dupator0% 1
XM/Laroux0% 5
W32/Torvil0% 8
W32/Randex0% 5
Opey0% 1
W32/Ganda0% 9
W32/Sdbot0% 1
Krepper0% 1
Bablas0% 1
W32/Lovsan0% 9
W32/Ska0% 2
Freelinks0% 1
W32/Sasser0% 5
W32/SQLSlammer0% 2
Divi0% 2
Tristate0% 3
JS/Fortnight0% 3
W32/Antinny0% 4
W95/Tecata0% 3
W32/Pate0% 4

Background

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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