The Virus Top Twenty

The percentage shown represents the percentage of registered incidences.

1

I-Worm.Lentin
32.48%

2
I-Worm.Klez
17.69%

3
I-Worm.Tanatos
16.91%

4
I-Worm.Sobig
12.01%

5
Macro.Word97.Saver
1.17%

6
Macro.Word97.Thus
1.00%

7
<!–!–>VBS.Redlof
0.73%

8
I-Worm.Ganda
0.53%

9
<!–!–>Backdoor.Beastdoor
0.31%

10
Win95.CIH
0.29%

11
<!–!–>Backdoor.Assasin
0.28%

12
<!–!–>Backdoor.Optix
0.22%

13
<!–!–>Backdoor.SdBot.gen
0.21%

14
I-Worm Hybris
0.20%

15
Win32.Parite
0.20%

16
I-Worm.Avron
0.20%

17
<!–!–>I-Worm Hawawi
0.15%

18
<!–!–>Backdoor.Death
0.15%

19
I-Worm.Mapson
0.14%

20
Backdoor.IRC.Zcrew
0.14%

Other Malicious Programs*
53.35%

*not included in the Top 20

Malicious Program Types

Kaspersky researchers have discovered new Mirage Kitten attacks using previously undocumented malware families: NodeRabbit in Node.js and PollCat in JavaScript.

Our experts discovered a new CoolClient backdoor variant with a kernel-mode rootkit driver that hides malicious processes, files, and network connections from security tools and threat analysts.

Kaspersky experts break down a new Armored Likho campaign that poses as a fundraising efforts and delivers a new Still Toolkit aimed at stealing Telegram data and eavesdropping on victims.

Kaspersky researchers reveal previously undocumented malware attributed to Mirage Kitten (UNC1549, Smoke Sandstorm, Nimbus Manticore): NightLedger backdoor, ArcBridge, and BridgeHead tunneling tools.