Virus Prevalence - December 2007

Virus NamePrevalencePercentageInstances
W32/Netsky32.9% 1511442
W32/Mytob24% 1102498
W32/Lovgate8.36% 384051
W32/Bagle7.37% 338768
W32/Zafi6.28% 288712
W32/Mydoom2.77% 127331
W32/MyWife2.6% 119616
W32/Virut2.58% 118541
W32/Stration1.94% 89171
W32/Sality1.64% 75544
W32/Zoek0.9% 41188
W32/Grum0.78% 35947
W32/Autorun0.74% 34204
W32/VB0.71% 32460
W32/Rontokbro0.61% 28200
W32/Bagz0.54% 24781
W32/Fleming0.48% 21911
W32/Klez0.38% 17659
W32/Hakaglan0.33% 15248
W32/Rjump0.27% 12257
W32/Parite0.25% 11680
W32/Sohanad0.24% 11182
W32/Autoit0.22% 9909
W32/Funlove0.21% 9805
W32/Agent0.21% 9643
VBS/Areses0.21% 9858
VBS/Small0.2% 9212
W32/Jeefo0.17% 7698
W32/Alman0.14% 6304
W32/Small0.12% 5527
W32/Bugbear0.11% 4975
W32/Nimda0.1% 4421
W32/Looked0.1% 4605
W32/Mabutu0.09% 4095
W32/Perlovga0.08% 3861
W32/Sober0.08% 3896
W32/Bobax0.08% 3459
W32/Mypis0.08% 3486
W32/AHKheap0.07% 3397
W32/Wukill0.07% 3422
VBS/Butsur0.07% 3191
W32/Feebs0.06% 2938
W32/Womble0.06% 2959
VBS/Redlof0.05% 2432
W32/Chir0.05% 2071
W32/Areses0.04% 2042
W32/Tenga0.04% 1673
W32/Allaple0.03% 1511
W32/Arianne0.03% 1478
W32/SirCam0.03% 1251
W32/Puce0.03% 1149
W32/Nuwar0.03% 1326
W32/MTX0.02% 850
W32/Valla0.02% 727
W32/Expiro0.02% 1054
W32/Sdbot0.02% 818
W32/Saburex0.02% 700
W32/Yaha0.02% 818
W32/Polip0.01% 534
W32/Stator0.01% 502
ALS/Bursted0.01% 310
W32/Malas0.01% 487
W32/Bacalid0.01% 658
W32/Banwor0.01% 548
W32/Mimail0.01% 280
W32/Drowor0.01% 519
W32/Choke0.01% 290
WYX0.01% 234
W32/Fbound0.01% 362
W32/Rbot0.01% 290
W32/Braban0.01% 258
W32/Opaserv0.01% 677
VBS/Solow0.01% 603
W32/Banwarum0.01% 501
W32/Pykse0.01% 276
W32/Dumaru0.01% 235
W32/Mkar0.01% 272
W32/Myba0.01% 380
W32/Agobot0.01% 643
W32/Moonlight0.01% 420
W32/Maslan0.01% 530
Titch0% 2
W97M/Ethan0% 21
W32/BadTrans0% 13
W32/IRCbot0% 55
W32/Randon0% 162
W32/NewApt0% 15
W32/Kriz0% 159
W32/Tinit0% 142
VBS/LoveLetter0% 116
W95/Lorez0% 5
Class0% 9
Neuroquila0% 1
W32/Duni0% 8
Onex0% 4
W32/Sobig0% 147
W32/Detnat0% 12
Linux/Rst0% 11
W32/Gibe0% 10
W32/Elkern0% 29

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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