Virus Prevalence - July 2007

Virus NamePrevalencePercentageInstances
W32/Netsky28.88% 1979252
W32/Bagle17.02% 1166324
W32/Mytob14.69% 1006519
W32/MyWife6.44% 441315
W32/Virut4.83% 330992
W32/Sober4.74% 325116
W32/Stration4.01% 274814
W32/Mydoom3.07% 210386
W32/Lovgate2.96% 202631
W32/Sality2.78% 190353
W32/Zafi2.73% 187064
W32/Bagz1.17% 80393
W32/Rontokbro0.6% 41001
W32/Parite0.54% 36885
W32/Rjump0.48% 32899
W32/Funlove0.45% 30778
W32/VB0.41% 28181
W32/Jeefo0.36% 24376
W32/Looked0.33% 22396
W32/Klez0.3% 20634
W32/Grum0.25% 16809
VBS/Small0.24% 16764
W32/SirCam0.24% 16609
W32/CTX0.19% 12862
W32/Small0.19% 13332
W32/Fujacks0.15% 10300
VBS/Butsur0.14% 9937
W32/Mabutu0.13% 9005
W32/Womble0.12% 8127
W32/Tenga0.12% 8193
W32/Nahata0.11% 7596
W32/Yaha0.1% 6674
W32/Perlovga0.08% 5468
W32/Nuwar0.08% 5680
W32/Wukill0.06% 3771
W32/Allaple0.06% 4286
W32/Sohanad0.06% 4436
W95/Lorez0.05% 3261
W32/Bugbear0.05% 3277
VBS/Redlof0.05% 3658
W32/Feebs0.05% 3601
W32/Alman0.04% 2945
VBS/Areses0.04% 2610
W32/Vetor0.03% 2288
W32/Gokar0.03% 1899
W32/Chir0.03% 2211
W32/Agobot0.03% 2013
W32/Bobax0.03% 1942
W32/Swen0.02% 1293
W32/Vote0.02% 1707
W32/Lovelorn0.02% 1074
W32/Opaserv0.02% 1196
W32/Puce0.02% 1651
W32/Saburex0.02% 1449
W32/Kaze0.02% 1163
W32/Maslan0.02% 1499
W32/Kriz0.01% 429
W32/Polip0.01% 737
W32/Elkern0.01% 505
ALS/Bursted0.01% 446
W32/Drowor0.01% 804
VBS/Soraci0.01% 344
W32/Spybot0.01% 379
W32/Nimda0.01% 459
W32/Valla0.01% 695
W32/Oror0.01% 867
W32/Banwarum0.01% 774
W32/Oporto0.01% 945
W32/Dumaru0.01% 651
Wazzu0.01% 374
W32/Areses0.01% 422
W32/Plexus0.01% 521
TheSec0.01% 4
W32/Sdbot0.01% 363
W95/Weird0.01% 695
W32/Hybris0.01% 757
SymbOS/Comwarrior0.01% 356
VBS/Psyme0.01% 378
W32/Moonlight0.01% 863
Titch0% 5
W97M/Ethan0% 34
W32/BadTrans0% 42
W32/IRCbot0% 14
W32/Randon0% 161
VBS/LoveLetter0% 129
Class0% 8
Jerk0% 2
Neuroquila0% 1
W32/Duni0% 7
Concept0% 1
Onex0% 2
W32/Bolzano0% 41
Ocard0% 1
W32/Doomjuice0% 1
W32/Sobig0% 48
W32/Detnat0% 247
W32/Gibe0% 22
Form0% 10
W32/Braid0% 2
Mumu0% 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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