Monthly Malware Statistics: April 2010

Malicious programs detected on users’ computers

The first Top Twenty lists malicious programs, adware and potentially unwanted programs that were detected and neutralized when accessed for the first time, i.e. by the on-access scanner.

Position	Change in position	Name	Number of infected computers
1	0	Net-Worm.Win32.Kido.ir	330025
2	0	Virus.Win32.Sality.aa	208219
3	0	Net-Worm.Win32.Kido.ih	183527
4	0	Net-Worm.Win32.Kido.iq	172517
5	0	Worm.Win32.FlyStudio.cu	125714
6	2	Virus.Win32.Virut.ce	70307
7	New	Exploit.JS.CVE-2010-0806.i	68172
8	-2	Trojan-Downloader.Win32.VB.eql	64753
9	2	Worm.Win32.Mabezat.b	51863
10	5	Trojan-Dropper.Win32.Flystud.yo	50847
11	-1	Worm.Win32.AutoIt.tc	49622
12	New	Exploit.JS.CVE-2010-0806.e	45070
13	-4	Packed.Win32.Krap.l	44942
14	New	Trojan.JS.Agent.bhr	36795
15	2	not-a-virus:AdWare.Win32.RK.aw	36408
16	Return	Trojan.Win32.Autoit.ci	35877
17	-1	Virus.Win32.Induc.a	31846
18	New	Trojan.JS.Zapchast.dj	30167
19	Return	Packed.Win32.Black.a	29910
20	Return	Worm.Win32.AutoRun.dui	28343

Source: Kaspersky Lab