Virus Prevalence - April 2009

Virus NamePrevalencePercentage
Autorun11.85%
NetSky11.32%
Agent11.04%
Dropper-misc9.37%
Virut8.02%
Invoice7.84%
Mytob7.68%
Suspect packers4.83%
OnlineGames4.02%
Mydoom3.36%
Iframe3.08%
Basine1.92%
Zbot1.78%
PWS-misc1.08%
Delf1%
LDPinch1%
Bagle1%
Zlob/Tibs0.94%
Zafi0.87%
VB0.72%
Heuristic/generic0.6%
Sality0.53%
QQPass0.51%
Mabezat0.42%
Alman0.37%
Backdoor-misc0.34%
Murlo0.31%
Downloader-misc0.29%
Cutwail/Pandex/Pushdo0.28%
Small0.26%
Tenga0.23%
FunLove/Flcss0.19%
Brontok/Rontokbro0.19%
Inject0.19%
Parite0.17%
Edibara0.17%
Lineage/Magania0.17%
Buzus0.16%
Klez0.15%
Virtumonde/Vundo0.14%
Mywife/Nyxem0.13%
Bifrose/Pakes0.12%
Mdrop0.12%
Mabutu0.11%
Chir0.11%
Encrypted/Obfuscated0.11%
Womble0.09%
Stration/Warezov0.09%
Thus0.09%
Fuzen0.07%
Ska0.06%
Rays/Traxg0.06%
FakeAV0.05%
Grum0.04%
Rootkit-misc0.04%
Redlof0.03%
WMF0.03%
LovGate0.03%
Goldun0.02%
Marker0.02%
Fujacks0.02%
Crypt0.02%
Nimda0.02%
Forbot0.02%
Feebs0.02%
Grew0.02%
Rechnung0.01%
Bugbear0.01%
Nuwar/Peacomm/Zhelatin0.01%
Clagger0.01%
Rbot0.01%
Hupigon0.01%
Maslan0.01%
Tenrobot0.01%
Banload0.01%
Sober0.01%

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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