The Virus Top Twenty – August 2003

Malware reports

01 Sep 2003

minute read

Authors

GReAT

Kaspersky Labs presents the Virus Top 20 for the month of August 2003.

The percentage shown represents the percentage of registered incidences.

Position	Virus	Percentage by Occurrence

1
I-Worm.Sobig
61.49%

2
I-Worm.Mimail
4.06%

3
I-Worm.Tanatos
3.49%

4
Worm.Win32.Lovesan
3.17%

5
I-Worm.Klez
1.09%

6
I-Worm.Lentin 0.67%

7
Worm.P2P.SpyBot
0.66%

8
Macro.Word97.Thus
0.60%

9
Macro.Word97.Saver
0.60%

10
Backdoor.BeastDoor
0.50%

11
Backdoor.SdBot
0.48%

12
Win32.Parite
0.41%

13
VBS.Redlof
0.36%

14
Backdoor.Optix.Pro
0.29%

15
I-Worm.Roron
0.25%

16
TrojanDropper.Win32.Freshbind
0.22%

17
Worm.Win32.Muma
0.20%

18
Win32.Xorala
0.19%

19
Worm.Win32.Welchia
0.19%

20
I-Worm.Gibe
0.19%

Other Malicious Programs*
20.86%

*not included in the Top 20

Malicious Program Types

Authors

GReAT

The Virus Top Twenty – August 2003

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