Java Class Loaders

Avast Free Antivirus / Premium Security
1

This mornig I ran my weekly system scan. Avast detected the following seven viruses:

JS:ClassLoader-7
JS:Exploit-Bytverify-11
JS:ClassLoader-7
JS:Exploit-Bytverify-11
JS:Exploit-Bytverify-8
JS:Gummy[Trj]
JS:Exploit-Bytverify-7

Since I’ve been using Avast (about 18-20 months), I’ve always found Zero (0) viruses during the system wide scan.

I’m a little confused. The settings I am using are the same as always on both e-mail and Standard Shield Protection. Why did Avast not detect these items when they first appeared?

The duplicate names are from different files that were all found in the “C:\Documents and Settings\Us\Application Data\Sun\Java\Deployment\cache\javapi\v1.0\jar.…” directory.
I have the files all in the virus chest if someone needs to look at them. If so, please advise how I shoud e-mail them.

I have not lost confidence in Avast, but am a little confused about this situation.

Am using Widows XP
Internet connection is 56K dial up

I do keep current on updates.

Thank you
Michael Reynolds

2

Hi,

  • either these detections were added only recently
    (check here: http://www.avast.com/i_idt_1404.html ) or
  • your StandardShield is set to only scan files on open (i.e. before executing; which is quite safe anyway): check/adjust the shield settings, if necessary

→ empty our java-cache via Controlpanel → java-plugin → cache &
update to the newest version of SUN’s JAVA

  • secure your InternetExplorer: disable activeX & scripting except for known, SECURE sites
  • Apply all Windowsupdates

Also see board-search and google for the malware’s names

:wink: