C++ Buffer Over run
Discussion
Looks as though i've got my self a virus on the laptop, was running AVG free which doesn't seem to have been working at the time, I ran AVG scan and it found no issues.
I was still having problems so i un-installed AVG and re-installed Nortons, this found a virus which was descirbed as one which would turn off the firewall. I keep running scans through Nortons which finds a virus and then removes it, i've done this about 5 times know and it keeps finding stuff!
I've also run Spybot which has found a few things and CC Cleaner.
When brousing the internet i keep getting pop-ups, even though the pop-up blocker is set too high.
Another problem is i keep getting a dialogue box appear stating the following "C++ Runtime, Buffer overrun etc..."
As a precaution i've backed the laptop up to an external hard-drive and turned it off.
Does anyone know how to sort this out? Also, if i have to format the Laptop, will the virus be on my External hard-drive?
ChrisRS
I was still having problems so i un-installed AVG and re-installed Nortons, this found a virus which was descirbed as one which would turn off the firewall. I keep running scans through Nortons which finds a virus and then removes it, i've done this about 5 times know and it keeps finding stuff!
I've also run Spybot which has found a few things and CC Cleaner.
When brousing the internet i keep getting pop-ups, even though the pop-up blocker is set too high.
Another problem is i keep getting a dialogue box appear stating the following "C++ Runtime, Buffer overrun etc..."
As a precaution i've backed the laptop up to an external hard-drive and turned it off.
Does anyone know how to sort this out? Also, if i have to format the Laptop, will the virus be on my External hard-drive?
ChrisRS
ChrisRS said:
Does anyone know how to sort this out?
Format the laptop hard-drive and do a fresh install of Windows or whatever operating system you use.
ChrisRS said:
Also, if i have to format the Laptop, will the virus be on my External hard-drive?
Possibly. Re-install the laptop, re-install your anti-virus (IMHO do not to use Norton, try Avast it's free). Then re-attach the external drive and scan it for viruses before accessing any files on it.
TangoAlpha said:
ChrisRS said:
Does anyone know how to sort this out?
Format the laptop hard-drive and do a fresh install of Windows or whatever operating system you use.
ChrisRS said:
Also, if i have to format the Laptop, will the virus be on my External hard-drive?
Possibly. Re-install the laptop, re-install your anti-virus (IMHO do not to use Norton, try Avast it's free). Then re-attach the external drive and scan it for viruses before accessing any files on it.
Thanks for the reply, is formatting the laptop the only realistic option, was hoping for something a bt less drastic!, i agree Nortons is a bit poor, time to try Avast then! The laptop's got a partitioned drive if that makes a difference, all the windows and program stuff is on C and all my docs are on D.
ChrisRS
Edited by ChrisRS on Wednesday 28th March 21:29
ChrisRS said:
Thanks for the reply, is formatting the laptop the only realistic option, was hoping for something a bt less drastic!, i agree Nortons is a bit poor, time to try Avast then!
The only really safe option is to wipe the drive as it is difficult to guarantee removing all traces of a virus with out doing that. Try it another way but you could be back in the same position within minutes/hours/days.
ChrisRS said:
The laptop's got a partitioned drive if that makes a difference, all the windows and program stuff is on C...
I would suggest that you format your C: drive and re-install windows there.
Treat the D: drive the same as your external drive, i.e. scan it before accessing anything on it.
ChrisRS said:
...and all my docs are on D.
Docs? Be aware that Microsoft Office docs can carry viruses. Other "inert" files such as jpg, txt & avi are not susceptible to viruses. A scan of this drive "should" pick up any infection. Be careful that you haven't stored any .exe files on there (they could now be infected), or that your original virus didn't store any executable files there itself (e.g. *.pif, *.com, *.exe, *.vbs and probably some other extensions would be suspicious).
ChrisRS said:
Thanks, i'll give it a try!
If it's not too late...
Ensure your AVG and Spybot are upto date, then reboot in safe mode, without networking (as computer starts, but before Windows launches, hit F8). Once Windows has loaded, run AVG and do a full scan on your computer. Then run Spybot S&D and check for problems.
If any virus/malware is found, allow the programs to delete/heal/clean/etc. Then reboot in safe mode again, and run the scans again. If they don't find anything, reboot as normal. Then run the scans again.
Hopefully, you'll be clean, but if not, and there is no automated cleaner for the nasty, it's probably time to wipe the HD. But doing the above could save all the hassle (although it does bring other benefits).
The C++ Buffer Overrun bit sounds like you have a virus but its not working correctly and so crashing. If it has been corrupted then the virus scanner won't find it and if it is crashing when running to create pop ups then it won't be running when you scan for spyware.
Might be intentional in the design. Make it polymorphic and in doing so corrupt some unneeded function to change the binary data to make it harder to scan for.
Might be intentional in the design. Make it polymorphic and in doing so corrupt some unneeded function to change the binary data to make it harder to scan for.
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