Virus Prevalence - October 2007

Virus NamePrevalencePercentageInstances
W32/Netsky34.61% 1985492
W32/Mytob23.68% 1358652
W32/Bagle12.19% 699466
W32/MyWife6.06% 347694
W32/Virut4.75% 272344
W32/Zafi2.64% 151562
W32/Mydoom2.5% 143486
W32/Bagz1.86% 106980
W32/Stration1.37% 78441
W32/VB1.29% 74208
W32/Grum1.03% 59226
W32/Sality0.96% 55037
W32/Rontokbro0.72% 41565
W32/Autorun0.55% 31506
W32/IRCbot0.51% 29357
W32/Parite0.49% 28197
W32/Klez0.48% 27433
W32/Rjump0.46% 26636
W32/Sdbot0.39% 22453
W32/Bugbear0.31% 17579
VBS/Small0.3% 17465
W32/Rbot0.25% 14060
W32/Fujacks0.23% 13162
W32/Sohanad0.18% 10565
W32/Jeefo0.17% 10008
W32/Looked0.15% 8666
VBS/Butsur0.14% 7977
W32/Tenga0.12% 7116
W32/Perlovga0.11% 6133
W32/Mabutu0.1% 5667
W32/Fleming0.1% 5519
W32/Feebs0.1% 5820
W32/Wukill0.09% 4889
W32/Womble0.09% 5297
W32/Alman0.08% 4750
W32/Allaple0.07% 4215
W32/Nuwar0.07% 4037
W32/Chir0.06% 3519
W32/Choke0.05% 3002
VBS/Redlof0.05% 2887
W32/Sober0.03% 1639
W32/Poebot0.03% 1916
W32/Valla0.03% 1724
W32/Agobot0.03% 1522
W32/Puce0.03% 1529
VBS/Areses0.03% 1874
W32/Lovgate0.02% 905
W32/Drowor0.02% 1113
VBS/Roor0.02% 1189
W32/Nimda0.02% 923
W32/Funlove0.02% 1423
W32/Traxg0.02% 1230
W32/Opaserv0.02% 1412
W32/Deloder0.02% 865
W32/Navidad0.02% 1323
W32/Detnat0.01% 366
W32/Darby0.01% 412
W32/Banwor0.01% 312
W32/Mimail0.01% 535
VBS/Soraci0.01% 293
W32/Braban0.01% 573
VBS/Solow0.01% 491
W32/Banwarum0.01% 685
W32/Korgo0.01% 312
W32/Areses0.01% 752
W32/Plexus0.01% 290
W32/Myba0.01% 512
W32/Small0.01% 362
W32/Moonlight0.01% 589
W32/Yaha0.01% 595
W32/Bobax0.01% 544
W32/Maslan0.01% 661
W95/Spaces0.01% 740
W32/Mypis0.01% 446
W32/BadTrans0% 5
W32/NewApt0% 1
W32/Kriz0% 270
W32/Polip0% 15
VBS/LoveLetter0% 176
W95/Lorez0% 60
Class0% 1
W32/Duni0% 2
W32/Bolzano0% 17
W32/Sobig0% 83
W32/Gibe0% 11
W32/Elkern0% 29
W32/Braid0% 3
ALS/Bursted0% 28
W32/Fizzer0% 11
W32/Mylife0% 240
JS/Wonka0% 16
W32/Forbot0% 74
W32/Antiman0% 40
W32/Vanbot0% 45
W32/Etap0% 16
W32/Vetor0% 22
W32/Gokar0% 14
W32/CTX0% 7
W32/Aliz0% 6
W32/Arequipa0% 9

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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