SMTMP extension might be found on folders generated by some malicious viruses on users computer. 

Detailed description

Software that works with smtmp file extension

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SMTMP file extension - Trojan:Win32/FakeSysdef folder

What is smtmp file? How to open smtmp files?

File type specification:

Dangerous and malicious file type icon Dangerous and malicious file type

The SMTMP is not actually file extension, but a folder created by malicious Ttrojans known as Trojan:Win32/FakeSysde by Microsoft, or Trojan.Win32.FraudPack.csve (Kaspersky), Troj/FakeAV-DOF (Sophos) as well as TROJ_FAKEAV.ORT by Trend Micro.

This very annoying Trojan virus creates the SMTMP folder in C:\Users\%User\AppData\Local\Temp\ folder and moves to it all files from Start and Desktop folders, basically screwing up users Start Menu and Desktop.

It also modifies the moved files with hidden tag, so they are no longer visible to common users (with hidden files hidden in system).

In most cases it also adds itself in executable form to be run at every startup. Might also display fake warnings and security scans and tries to scams users to purchase a rogue Antivirus product and to share their confidential information such as credit card number.

Help how to open SMTMP files:

If you see folder like this in your computer, you should definilty check your system for viruses with any reliable antivirus software, such as Avast, or AVG.

How to convert file with extension SMTMP:

As far as we know, this .smtmp file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

Related links:

How to restore Start Menu

List of recommended software applications associated to the .smtmp file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open smtmp file, edit smtmp file, convert smtmp file, view smtmp file, play smtmp file etc. (if exist software for corresponding action in File-Extensions.org's database).

  • Others smtmp file

Unspecified and all other actions for computer programs working with smtmp file - Trojan:Win32/FakeSysdef folder

Click on the software link for more information about Avast Antivirus. Avast Antivirus uses smtmp file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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SMM file extension

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