[clamav-users] Question about Clamav compressed file support

Micah Snyder (micasnyd) micasnyd at cisco.com
Thu Jan 11 17:14:32 UTC 2018

Hi Rob,

At this time, ClamAV does not have the means to decompress and parse the proprietary Acronis .tib format.  I only took a brief peek at Wikipedia (https://en.wikipedia.org/wiki/Acronis_True_Image#File_format) to learn more about Acronis image files.

Unless someone in the community writes a parser to add support to identify these file types, parse, decompress, etc and submits a pull request to add the feature to the Git repository, I doubt you’ll ever see support in ClamAV for this file type.



Micah Snyder
Software Engineer
Cisco Systems, Inc.

On Jan 11, 2018, at 10:41 AM, botnec <botnec at gmx.de<mailto:botnec at gmx.de>> wrote:


I'm using a QNAP NAS server as destination for Acronis Tue Image backup files.
The extension of these files is .tib. I did not find anything in the clam doc file about it.

Now my question is, how does ClamAV deal with these files ? Will they be uncompressed
and the contents checked anyway? I hope so because it takes some hours if ClamAV
checks the whole backup folder (2.5 TB). If this would be not the case, I possible do not
need to start the virus check procedure at all.
(btw. I'm using another virus checker on my PC anyway, I just thought to use CalmAV

Can anybody answer please ?

Thank you.


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