Malware Prevalence - June 2012

HitmanPro is a second opinion malware scanner, designed to run alongside existing real-time antivirus programs. Its purpose is to find and remove malware that your existing antivirus program is currently unable to find and/or remove.

The list below is the top malware that HitmanPro found and removed from computers that were protected by up-to-date antivirus programs. It differs from other security companies because this list is about malware that is successful in hiding from or bypassing up-to-date virus protection programs. We are able to compile this list because HitmanPro also records if there was a trusted up-to-date antivirus program on the computer, registered in the Windows Security Center.

Prevalence Top 25 # Malware Prevalence 1 FakeAV 15.62% 2 Alureon 7.98% 3 Mywebsearch 7.67% 4 ZeroAccess (Sirefef) 5.07% 5 InstallCore 4.90% 6 Zeus (Zbot) 4.65% 7 Gamevance 3.90% 8 Hotbar 3.35% 9 Sasfis 2.12% 10 Ransom 2.04% 11 Zusy 1.91% 12 Dyfuca 1.91% 13 Virut 1.79% 14 Delf 1.76% 15 Softomate 1.74% 16 Toggle 1.55% 17 WinLock 1.33% 18 Bundlore 1.31% 19 Small 1.29% 20 Mebroot (Sinowal) 1.26% 21 AvKill 1.26% 22 Prorat 1.21% 23 Vundo 1.11% 24 Sality 1.08% 25 Hacktool 0.97% Note: items in bold are new entries	Infected MBR Prevalence Top 5 # Bootkit Prevalence 1 Alureon 40.26% 2 Pihar 26.14% 3 Mebroot (Sinowal) 20.73% 4 sst 6.46% 5 Hashish 2.97% A bootkit is a variant of a kernel-mode rootkit and modifies the master boot record (MBR). They sucessfully subvert 64-bit kernel-mode driver signing in Windows 7. More information on Wikipedia: Bootkits
Prevalence is the occurrence percentage of a malware family relative to other malware families found on computers protected by an up-to-date antivirus program. For example, of all these infected computers (100%) in June 2012, 7.98% was found infected with the 'Alureon' malware.
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