Virus Prevalence - May 2007

Virus NamePrevalencePercentageInstances
W32/Bagle27.11% 2759124
W32/Netsky22.63% 2303735
W32/Mytob18.84% 1917862
W32/MyWife7.46% 759774
W32/Virut3.96% 402786
W32/Lovgate3.94% 400973
W32/Zafi3.21% 326987
W32/Mydoom1.45% 147631
W32/Sober1.39% 141590
W32/Bagz1.28% 130778
W32/Stration1.05% 107232
W32/Rontokbro0.94% 95264
W32/VB0.78% 79171
W32/Perlovga0.62% 62857
W32/Parite0.58% 59342
W32/Jeefo0.53% 54184
W32/Rjump0.48% 49040
VBS/Small0.45% 45743
W32/Funlove0.42% 42846
W32/Klez0.24% 24916
W32/Looked0.24% 23932
VBS/Butsur0.24% 24928
W32/Nuwar0.23% 23217
W32/Fujacks0.22% 22380
W32/Sality0.15% 15649
W32/Mabutu0.14% 14285
W32/Rbot0.12% 12251
W32/Allaple0.11% 10747
W32/Tenga0.11% 11122
W32/Sohanad0.1% 10654
W32/Sdbot0.1% 10525
W32/IRCbot0.07% 7549
W32/Bugbear0.07% 7376
VBS/Redlof0.06% 6547
W32/Chir0.05% 5149
W32/Womble0.05% 4780
W32/Elkern0.03% 3430
W32/Opaserv0.03% 3158
W32/Oror0.03% 3056
W32/Grum0.03% 2699
W32/Snapper0.03% 2604
VBS/Areses0.03% 2587
W32/Banwarum0.02% 2298
W32/Magistr0.02% 1917
W32/Yaha0.02% 1819
W32/Maslan0.02% 1996
W97M/Ethan0.01% 642
W32/Polip0.01% 1291
W32/Detnat0.01% 659
ALS/Bursted0.01% 1160
W32/Darby0.01% 1200
VBS/Soraci0.01% 770
W32/Nimda0.01% 564
Buendia0.01% 86
Zeitung0.01% 19
W32/Lovelorn0.01% 794
W32/Valla0.01% 1111
VBS/Solow0.01% 584
W32/Korgo0.01% 1490
W32/Dumaru0.01% 799
W32/Areses0.01% 964
W32/Reatle0.01% 774
W32/Alman0.01% 579
W32/Mkar0.01% 868
W32/Plexus0.01% 678
W32/Feebs0.01% 1284
W32/Agobot0.01% 739
W32/Moonlight0.01% 1158
W32/Rinbot0.01% 1076
W32/Mypis0.01% 1036
W32/Vesser0% 7
W32/Vasor0% 35
W32/Randon0% 253
W32/Kriz0% 187
VBS/LoveLetter0% 179
Class0% 3
W32/AHKheap0% 93
W32/Sobig0% 135
W32/Gibe0% 44
W32/Fizzer0% 7
Smack0% 1
XF/Netsnake0% 22
W32/Forbot0% 41
W32/Antiman0% 116
W32/Mimail0% 133
W32/Codbot0% 72
W97M/Nometz0% 22
W32/Vanbot0% 107
W32/Vetor0% 126
W97M/Marker0% 151
W32/Arequipa0% 33
W32/Spybot0% 274
W32/Cabanas0% 28
Melissa0% 37
W32/Swen0% 249
W32/Dref0% 426
W95/Tenrobot0% 317
W32/Funner0% 26
W32/Mofei0% 224
W32/Traxg0% 164

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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