Hi,
I got this message from avast! this afternoon when it finished a full scan:“impossible to scan this thread”,so I move the thread to the quarantine and there I saw it has been selected as infected.But what kind of infection ?Avast ! do not give any explanation ???
Do I erase it from the chest or let them there ?
I ask also because my pc is runing very slow today and I don’t know if it is a bad sign .
Thanks for advice.
Topaze-
What do you mean by ‘thread’ ?
It is files that are scanned and there are many legitimate reasons why avast can’t scan a file or files. Is this what you mean unable to scan files list after an on-demand scan ?
Can you give some examples of what can’t be scanned, file name and location ?
Many programs (usually security based ones) password protect their files for legitimate reasons such as AdAware and Spybot Search & Destroy, there are others (and avast doesn’t know the password or have any way of using it even if it did know it).
When you run scans with the above programs and you delete harmful entries that they detect, a copy is kept (in quarantine/restore/backup) in case you need to reverse what you did. These are usually password protected, you should do some housekeeping and delete old backup/recovery/quarantine entries (older than two weeks or so), this will reduce the numbers of files that can’t be scanned.
By examining 1) the reason given by avast! for not being able to scan the files, 2) the location of the files, you can get an idea of what program they relate to. You may need to expand the column headings to see all the text.
Files that can’t be scanned are just that, not an indication they are suspicious/infected, just unable to be scanned. Do not erase them they can do no harm there and it may even be that you should possibly restore the file (thread) from the chest.
Thank you DavidR for your prompt answer
So I restart this morning with a on demand scan and here are the results:
“D:\Documents and settings.…\mod-ssl-2,8.28-1.3.37.tar|1| |E| archive GZIP…corrompue impossible de scanner,”
Do I delete this ?
Sorry I am not a very expert…
You don’t have to worry about this it is saying it can’t scan it because the archive file is corrupt in some way it can’t open it. That isn’t an indication that it is infected, just that it can’t be scanned. It may just be that it doesn’t support the gzip format I can’t say (I’m just an avast user like you).
However if the program that placed it there was able to extract (unzip) the contents then avast (standard shield) should be able to scan the files that are extracted or if you/they try to execute one of the extracted files, before any executable file runs avast scans it.
Archive (zip, etc.) files are by their nature are inert, you need to extract the files and then you have to run them to be a threat. Long before that happens avast’s Standard Shield should have scanned them and before an executable is run that is scanned. For this reason I rarely even select scan archives on a routine on-demand scan.
The .…\ bit is important (D:\Documents and settings.…\mod-ssl-2,8.28-1.3.37.tar) as that tells us what sub-folder it is in, this may indicate what program is responsible. You can expand the column headings so you can see the complete path, see image.
If it is in a Temp folder then you could reasonably clear all files in the temp folders, ClearProg - Temp File Cleaner or CCleaner - Temp File Cleaner, etc..
Ok,i will follow you by downloading CCleaner and see if it is a temp folder.
Tank you so much for advices
bye ,Topaze-
Also, you should:
-
Enable/Disable System restore on Windows ME or Windows XP. System Restore cannot be disabled on Windows 9x and it’s not available in Windows 2k.
-
Schedule a boot time scanning with avast. Start avast! > Right click the skin > Schedule a boot-time scanning. Select for scanning archives. Boot. Other option is scanning in SafeMode (repeatedly press F8 while booting).
-
It will be good if you download, install, update and run other trojan remover tools: a-squared and/or Free AVG Antispyware (trojan removers).
@Tech,thanks for reply too
So before scaning in safe mode I have to disable syst.restore,yes?
and after reboot ,and enable syst.restore again.I’m doing right ?And then what ?
I have a squared installed on my pc,doesn’t find nothing ,only cookies
Yes. Doing so, you’ll delete the restore points including the infected files stored there.
Yes.
Schedule a boot time scanning with avast.
What about AVG antispyware (ex-ewido)?
@Tech,I have done what you suggested ;
I scan the archive in safe mode ,this was going very long about 2hours and near the end the pc screen went dark and I had to reboot-Then syst.restore re enable ,I restart with a new avast scan,and results seem to be ok now.
What about AVG antispyware (ex-ewido)?I have had a very bad experience with it (crashing my computer),maybe some combination with active guard & avast ,I don’t know.
However thank you both for replies
@davidR I have installed ccleaner it is a nice soft that can help me very well.
Does your energy saving settings are marked to automatically shutdown (or hibernate) the computer?
I’m not sure how does this work on Safe Mode.
But, as you’ve said, you’re ok now and that is what counts.
Does your energy saving settings are marked to automatically shutdown (or hibernate) the computer?
I’m not sure how does this work on Safe Mode
???I am not sure neither…as it is the first time I have done this.You are confusing me now.Also when scanning in safe mode ,does avast makes a report ?Then it doesn’t as the pc shut down before the end.
The report in normal mode was ok
If you set so… On Program settings > Report (tab)