Member Avatar for JellyHead

I've just ran the online virus scan, and it found 4 infected files that could not be healed. I don't know if I should delete them or not. I've checked for viruses with AVG but it doesn't even find these viruses. The viruses are called Troj Briss.A (in file C:\WINDOWS\SYSTEM\jao.dll), Troj Muss.A (in file C:\WINDOWS\SYSTEM\sysapp.exe), Troj Delf.RA (in file C:\WINDOWS\2_0_1browserhelper2.dll), and Troj Revop.A (in file C:\pup.exe). What should I do with them? PLEASE SOMEONE HELP ME! thnx...

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Dani AI

Generated

Short expert summary and next steps.

Good that the infected files were removed; that stops the immediate payloads, but Trojans frequently leave persistence hooks, drop helpers, or hide inside restore points. Taking ’s removal approach was sensible and ’s prevention points are still exactly the kind of habits that stop re-infection.

Recommended verification and cleanup checklist (do these from a trusted environment or rescue media):

  • Make a copy of personal files (avoid executables) and scan that copy before restoring anywhere.
  • Run a full offline/rescue scan from a trusted vendor (bootable rescue media or an offline scanner) to catch components that run only outside Windows.
  • Inspect and remove leftover autostart entries and scheduled tasks with a startup/autorun inspector (covers Startup folders, registry Run keys, services, scheduled tasks, browser helpers).
  • Repair and check disk/system integrity from an elevated prompt:
sfc /scannow
chkdsk C: /f /r
netstat -ano     (inspect unexpected remote endpoints/PIDs)
  • Delete old System Restore points (they can reintroduce malware) and create a fresh restore point only after the system is verified clean.

Post-cleanup actions and when to reinstall:

  • Change all important passwords from a known-clean device and review account activity/banking statements for unusual access.
  • Scan any backups or external drives before restoring files; never restore executable files or installers from an infected image.
  • If symptoms persist, or there’s evidence of credential theft or sensitive-data exposure, back up personal data, wipe the disk, and do a clean OS reinstall — that is the only sure cure for deep compromise.
  • After recovery, enable automatic updates, run modern endpoint protection, and use a non-administrator daily account and a firewall as recommended.

Recommended Answers

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Member Avatar for crunchie

Yes, I would delete all of those files. You may have to be in safe mode. Get there by tapping F8 whilst booting up.
In order to view these files you may have to select 'show hidden files/folders.' Instructions on how to here.

Member Avatar for JellyHead

*Phew* I managed to delete the infected files, and it didn't seem to do any bigger harm to the computer. Now i'm just curious; What do those viruses really do? What would have happened if I wouldn't have deleted the infected files?

Member Avatar for crunchie

They can corrupt files on your computer, rendering them unusable. Can & do use most of your computers resources, leaving nothing for the legitimate programs. Can also get sent on to ppl in your email address book etc.

Member Avatar for kc0arf

Hello,

A Virus is a computer program that affects your computer by doing unethical / unautorized modifications to your computer.

For example, Solitare opens a screen where you can play cards. That is what you expected it to do. You authorized your computer to play cards. But what if it had other things going on, such as emailing your friends your credit card numbers? We call this type of problem a Trojan Horse, because it does one thing, but secretly does something else.

Computers have no sense of privacy, ethics, or wisdom. A computer sees every command as something it should do. IF I type in 2 + 4, I expect it to compute that and give me a 6. If a computer sees a command to email this financial file to some address on the internet, it will go ahead and do that.

It is just like a child. A kid sees a toy in the road, and has no "rules" to look for cars. It just goes and gets the toy because it is supposed too.

This is why it is a good idea to:
* Watch what you download
* Have anti-virus protection installed
* Use accounts that are not Administrators / Root Users for your daily work
* Stay away from freebie sites (called warez). There is often a price to pay
* Have a firewall
* Stay informed

Take care, and good luck

Christian

Member Avatar for JellyHead

Thanx a lot both crunchie and kc0arf... =) You've been to big help. And also I learned something about computer-viruses! A big thanks to both of you guys.

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