Virus Prevalence - May 2005

Virus NamePrevalencePercentageInstances
W32/Sober86.66% 733358
W32/Mytob5.51% 46589
W32/Netsky3.5% 29575
W32/Mydoom1.93% 16318
W32/Bagle0.63% 5371
W32/Lovgate0.59% 4987
W32/Bagz0.17% 1466
W32/Zafi0.15% 1309
W32/Mabutu0.15% 1227
W32/Funlove0.12% 983
W32/Bugbear0.1% 863
W32/Klez0.06% 485
W32/Mimail0.05% 381
W32/Gibe0.04% 344
W32/Wurmark0.04% 324
W32/Dumaru0.04% 355
W32/Valla0.03% 248
W32/Pate0.03% 288
W32/Mylife0.02% 152
W32/SirCam0.02% 142
W32/Eyeveg0.02% 151
W32/Sobig0.01% 105
W32/Fizzer0.01% 58
W32/Swen0.01% 126
W32/Mota0.01% 69
W32/MyWife0.01% 71
W95/Tenrobot0.01% 104
VBS/Redlof0.01% 104
W32/Yaha0.01% 54
W95/Spaces0.01% 70
W32/BadTrans0% 18
W32/Kriz0% 36
Internal0% 2
Netlog0% 1
VBS/LoveLetter0% 7
Class0% 1
W32/Wukill0% 2
NoClose0% 2
W32/Elkern0% 10
Form0% 4
Mumu0% 11
W32/AntiMam0% 9
W32/Darby0% 1
W97M/Marker0% 14
VBS/Soraci0% 5
W32/Spybot0% 2
W32/Nimda0% 15
Inor0% 8
WYX0% 2
W32/Rbot0% 6
JS/Kak0% 6
Stealus0% 5
Poorboy0% 1
W32/Traxg0% 5
W32/Lovelorn0% 17
W32/Korgo0% 8
W32/Magistr0% 17
Cap0% 3
W95/Dupator0% 4
XM/Laroux0% 22
W32/Torvil0% 2
Hiac0% 2
W32/Nachi0% 22
W32/Randex0% 30
W32/Chir0% 6
Lunch0% 2
Toraja0% 3
W32/Ganda0% 13
W32/Myfip0% 2
W32/Weird0% 3
Gaggle0% 2
Perl/Shellbot0% 2
W32/Plexus0% 20
W32/Sdbot0% 1
W95/Weird0% 3
Virogen-Pinworm0% 10
W32/Hybris0% 26
W32/Ska0% 1
Freelinks0% 2
W95/CIH0% 8
Divi0% 3
W32/Gaobot0% 14
VBS/Psyme0% 15
VBS/Haptime0% 1
Sic0% 8
Tristate0% 3
JS/Fortnight0% 7
W32/Antinny0% 12
Walker0% 1
W32/Maslan0% 51
AntiCMOS0% 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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