Despite heightened fears about cyberwarfare, March was a pretty slow month for new viruses and worms.
"Central Command saw no major changes in this month's Dirty Dozen," said Steven Sundermeier, product manager of Central Command, Inc. Klez-E and Yaha-E held onto the Nos. 1 and 2 positions with 21.6% and 10.8%, respectively.
Sophos' highest new entry for the month shows the popularity of the Kazaa peer-to-peer file sharing network, said Graham Cluley, senior technology consultant at the antivirus vendor.
"This month's highest new entry is Gibe, a worm which spreads via the Kazaa network. Businesses need to have a long hard think about whether these applications have a valid place on their networks," he said.
Here are the top viruses and worms according to leading antivirus vendors:
Sophos' top 10 viruses and worms for March:
1. W32/Klez-H (Klez variant) 15.3%
2. W32/Sobig-A (Sobig worm) 5.2%
3. W32/Gibe-D (Gibe variant) 4.4%
4. W32/Avril-B (Avril variant) 3.2%
5. W32/Yaha-E (Yaha variant) 3.0%
6. W32/Avril-A (Avril worm) 2.6%
7. W32/Yaha-K (Yaha variant) 2.4%
8. W32/Bugbear-A (Bugbear worm) 2.2%
9. JS/NoClose (NoClose Trojan 2.0%
9. W32/Lovgate-B (Lovgate variant) 2.0%
Central Command's Dirty Dozen for March:
1. Worm/Klez.E (includes G) 21.6%
2. W32/Yaha.E 10.8%
3. Worm/Yaha.M 8.9%
4. Worm/Avril.B 6.4%
5. Worm/Sobig.A 6.3%
6. Worm/Avril.A 5.8%
7. Worm/BugBear 4.6%
8. W32/Funlove 2.3%
9. Worm/Yaha.L 2.0%
10. Worm/Sircam 1.7%
11. W32/Nimda 1.4%
12. Worm/Badtrans.B 1.1%
Trend Micro's list of the top 10 viruses for March:
1. PE FUNLOVE.4099
2. WORM KLEZ.H
4. PE ELKERN.D
5. PE NIMDA.A-O
6. PE PARITE.A
7. BKDR GLITCH.B
8. WORM YAHA.G
9. PE NIMDA.E
10. WORM YAHA.K
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