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Was having issues, ran AV and manually deleted, is that enough?


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#1 ctrsara

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Posted 23 August 2011 - 08:00 AM

I was having sudden freezing and even booting problems on my HP Pavilion a6500f Windows Vista Home Premium desktop (just for the last 3 days, no new changes to the computer in a few weeks) and thought my peripherals were maybe causing the problem or that my hard drive was dying. I posted under hardware but they told me a virus could actually be causing my problems. I had done a malwarebytes scan, but I guess I thought it would detect anything and that Avast was just live protection. was finally able to complete a full virus scan in Safe Mode (it kept freezing in normal mode) and found and manually deleted "Threat:Java:Agent-LS[Expl]". In C:\Users\Sara\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\12. Avast wouldn't respond to requests to delete it in Safe Mode, so I deleted it manually. A re-scan in normal mode came up clean, and I haven't had any freezes yet since last night. I'm doing a boot scan now. If that and malwarebytes come up clean, do you think I'm in the clear?

Here is a link to my other thread:
http://www.bleepingcomputer.com/forums/topic415605.html/page__gopid__2382822#entry2382822

Oh, and I don't currently have Internet access, (except on the only-so-useful iPad) so I can't download anything... :(

Edited by ctrsara, 23 August 2011 - 08:07 AM.


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#2 quietman7

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Posted 23 August 2011 - 08:31 AM

Your scan results indicate a threat(s) was found in the Java cache.

When a browser runs an applet, the Java Runtime Environment (JRE) stores the downloaded files into its cache folder for quick execution later and better performance. Both legitimate and malicious applets, malicious Java class files are stored in the Java cache directory and your anti-virus may detect them as threats. The detection can indicate the presence of malicious code which could attempt to exploit a vulnerability in the JRE. For more specific information about Java exploits, please refer to Virus found in the Java cache directory.

Notification of these files as a threat does not always mean that a machine has been infected; it indicates that a program included the viral class file but this does not mean that it used the malicious functionality. As a precaution, I recommend clearing the entire cache manually to ensure everything is cleaned out:
Also be aware that older versions of Java have vulnerabilities that malicious sites can use to exploit and infect your system. That's why it is important to always use the most current Java Version and remove outdated Java components.You can verify (test) your JAVA Software Installation & Version here.

If that and malwarebytes come up clean, do you think I'm in the clear?

Normally I would recommend getting a second opinion by by performing an Online Virus Scan but without an Internet connection the only thing you can do is to download and use other trustworthy programs like SUPERAntiSpyware: How to use to scan and remove malware from your computer.

You may also have too many applications loading at startup when Windows boots. Almost all applications you install want to startup when Windows loads. If you allow all these startups, they will compete for and use system resources resulting in poor performance and a slow system. Many of these programs are not needed and disabling them can save resources and improve performance as they are available from Start > Programs or an icon on the desktop. Other reasons for slowness and performance issues include disk fragmentation, disk errors, corrupt system files, unnecessary services running, too many browser Add-ons/toolbars, failure to clear browser cache, not enough RAM, dirty hardware components, etc. Incompatible browser extensions and add-ons can impact system performance and cause compatibility issues such as application hangs (freezing).

As you use your system it becomes filled with more files/programs and has a natural tendency to slow down and behave oddly so cleaning and regular maintenance is essential. For more information about trimming down the number of startup applications, please refer to Slow Computer/Browser? Check here first; it may not be malware. Scroll down to the section titled "• Check for any unnecessary applications loading when Windows Boots."
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#3 ctrsara

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Posted 23 August 2011 - 10:53 AM

Thank you. I am working on some of these suggestions.

#4 quietman7

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Posted 23 August 2011 - 11:37 AM

You're welcome.
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