Decompression bomb? Help please.

okay so I’m new to the avast forums… I ran an Avast! virus check today and i came up with these findings.

Name of file: S-1-5-21-2011104941-2225335917-9757603049-1001$RDAKC0H.exe$INSTDIR\projectg500gb+.pak

Result: Unable to scan: The system cannot find the file specified

Operation: Error occurred during file deletion: The system cannot find the file specified

Just wanting to know if i should be worried or not.
I will re-run the scan tomorrow to see if it still comes up, but until then, someone please reply to tell me if i should do anything about this?

a decompression bomb is not a virus, so calm down :wink: it’s just an archive, a big one usually that has several sub archives inside, too long to decompress and scan for avast that’s all. In your case it seems to be an already deleted file that left some stuff in (MFT may be…) and I know for having experienced this before that avast 4 has issues with that and sometimes gets stuck on such files (scan freezes). Anyway again, no sweat, that’s no a virus :slight_smile:

There are numerous topics relating to this issue, so a forum search is a very handy tool, accessing a wealth of information.

The name really is the most dangerous thing about this and I wish they would change it or simply not report it, a real PITA.

What you actually posted is strange and seemingly unrelated to a Decompression bomb as it looks like a registry entry.

Also it looks like you tried to delete this when all that was said was the file couldn’t be scanned ?

Files that can’t be scanned are just that, not an indication they are suspicious/infected, just unable to be scanned.

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.

If you can give some examples of those file names, the locations and reason given why it can’t be scanned might help us further ?