Malware reports

Virus Top Twenty for September 2003

Malware reports

01 Oct 2003

minute read

Authors

GReAT

Kaspersky Labs presents the twenty most widespread viruses for September 20031= I-Worm.Sobig
44.75%
2newI-Worm.Swen
36.50%
3– 1I-Worm.Mimail
6.50%
4+ 1I-Worm.Klez
2.52%
5+ 1 I-Worm.Lentin
2.35%
6– 3 I-Worm.Tanatos
0.81%
7newI-Worm.Dumaru
0.68%</TR
8– 4 Worm.Win32.Lovesan
0.35%
9– 2 Worm.P2P.SpyBot
0.14%
10re-entry Win95.CIH
0.11%
11= Backdoor.SdBot
0.09%
12re-entry I-Worm.Ganda
0.09%
13=VBS.Redlof
0.08%
14– 2 Win32.Parite
0.08%
15+ 4 Worm.Win32.Welchia
0.08%
16re-entry Win32.FunLove
0.08%
17– 1 I-Worm.Roron
0.07%
18– 4Backdoor.Optix.Pro
0.07%
19re-entryI-Wom.Fizzer
0.07%
20– 14Macro.Word97.Thus
0.05%
Other Malicious Programs*
4.52%

Position	Change	Virus Name	Percentage by Occurrence
* not included in the Top Twenty

Malicious Program Types

Authors

GReAT

Virus Top Twenty for September 2003

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