Virus Prevalence - January 2004

Virus NamePrevalencePercentageInstances
W32/Mydoom71.31% 72431
W32/Bagle6.63% 6739
W32/Opaserv5.98% 6078
W32/Mimail5.24% 5320
W32/Dumaru4.19% 4251
W32/Swen1.01% 1030
W32/Sobig0.98% 998
W95/Dupator0.69% 699
W32/Bugbear0.67% 677
W32/Klez0.66% 667
W32/Sober0.6% 613
W32/Gibe0.36% 363
W32/Yaha0.22% 227
W32/Funlove0.21% 212
W95/Spaces0.16% 163
W32/SirCam0.15% 155
W32/Fizzer0.07% 73
VBS/Redlof0.07% 73
W32/Lovsan0.07% 73
W32/Lovelorn0.06% 63
W32/Magistr0.06% 58
W32/Nachi0.06% 57
W32/Torvil0.05% 47
Inor0.04% 38
W32/Deborm0.03% 26
W32/Ganda0.03% 26
W32/Sdbot0.03% 31
W32/Kriz0.02% 17
W95/Lorez0.02% 18
W32/Spybot0.02% 17
W32/Nimda0.02% 16
W32/Parite0.02% 20
W32/Hybris0.02% 24
W32/Gaobot0.02% 22
JS/Fortnight0.02% 22
W32/BadTrans0.01% 8
W32/Lovgate0.01% 7
W32/Holar0.01% 6
W97M/Marker0.01% 10
W32/Cabanas0.01% 7
Flea0.01% 8
W32/Valla0.01% 10
XM/Laroux0.01% 12
W32/Frethem0.01% 8
W32/Randex0.01% 8
W95/CIH0.01% 15
VBS/Psyme0.01% 6
W32/Pate0.01% 7
Proverb0% 1
Titch0% 1
W97M/Ethan0% 2
W32/Randon0% 1
W32/Jeefo0% 3
Netlog0% 2
VBS/LoveLetter0% 3
Class0% 1
CMOS0% 1
W32/Elkern0% 5
Form0% 1
Zeha0% 1
W32/Goner0% 1
Mumu0% 5
Service0% 1
W32/Darby0% 1
W32/Carpet0% 1
W32/Alphx0% 4
Bleah0% 1
W32/Gokar0% 1
W32/Aliz0% 1
VBS/Soraci0% 4
W32/KWBot0% 1
Melissa0% 1
W32/Pretty0% 1
W32/Surnova0% 2
W32/Aplore0% 1
WYX0% 2
Pri0% 1
Stoned0% 1
W32/Hantaner0% 1
W95/Tenrobot0% 3
W32/Mofei0% 4
W32/Kitro0% 1
NYB0% 1
W32/MTX0% 3
Hope0% 1
W32/Oror0% 1
W32/Reader0% 1
W95/Whog0% 3
Cap0% 1
Cascade0% 2
W97M/Thus0% 3
W32/Raleka0% 1
W95/Ilmx0% 2
W32/Winur0% 1
ColdApe0% 3
W95/Kuang0% 2
Opey0% 1
VBSWG0% 2
Gaggle0% 4
W95/Fono0% 3

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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