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All my files are corrupted


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#1 morteza007

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Posted 17 March 2015 - 07:53 PM

Hello everyone!

 

Something horrible happened today! When I turned on my laptop, I noticed that all (almost all) my txt, pdf, mp4, ... files are not working.

 

svchost.exe -k netsvcs was running like crazy in the background and my ssd working like crazy too.

 

I think somehow windows 8 is encrypting my files.

 

To test the things, I created a text file with the content "test". I mean, I typed "test" and then saved the file. At first, it was ok, I mean, every time I double-clicked it, it showed "test" but after a few minutes, when I double-clicked it again, I got these in the file:

 

9Æ–©Ë•j(gÿÉ™ŒÀÁßlåVžóâk³à„%öõ4™v¹ïãéæÏN„g’UÏÔ¤¹ÓîÀz>_Í!£m5Òï«QîåÒêj¤Ì…7>TùTèþ«²èWXo·Wh*U
v÷ð{±À¬:_“.eqÊá«ïmåCÕ¤²¬,ÒÚ¨óh,ãi£{v½zwÊ5LMë¯1FSOŽS¨~DiEpƒË»•š7.Àv€e¿ª7«£pé¸áÈ3S›G<ÿ°¥òHð¯þwÍeùë+Ͷ“ò˜¦\9ö#÷„ŠÆ€,CêåšÑëW¥*¿¨êmƘŸ1â»ä”ø¶N4¦ÒTäNŠØ쯖!Â÷7Bj,msÉÑ^(ë’}óùpUA

 

As you see, a simple four-character word (test) has been turned into these nonsense content.

 

I am losing all my files. I have lots of them. Please help me. I installed Avira and found a few viruses but they don't seem to be involved because "svchost.exe -k netsvcs" is still running.

 

How can I get the files back?

 

Thanks.

 

Update: I notice txt files which asked me to pay in order to decrypt the files. This is a ransomware called CryptoWall 3.0 (not sure about the version). More info about CryptoWall 3.0 is here:

http://sensorstechforum.com/remove-cryptowall-3-0-and-restore-the-encrypted-files/

 

The End.


Edited by morteza007, 18 March 2015 - 04:49 AM.
Moved from win 8 to 'Am I infected?'


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#2 quietman7

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Posted 18 March 2015 - 06:01 PM


A repository of all current knowledge regarding CryptoWall, CryptoWall 2.0 & CryptoWall 3.0 is provided by Grinler (aka Lawrence Abrams), in this tutorial: CryptoWall and DECRYPT_INSTRUCTION Ransomware Information Guide and FAQ

Reading that Guide will help you understand what CryptoWall (including versions 2.0 & 3.0) does and provide information for how to deal with it. Cryptowall typically deletes all Shadow Volume Copies with vssadmin.exe so that you cannot restore your files via System Restore or using a program like Shadow Explorer...but it never hurts to try. At this time there is no fix tool and Decryption of any CryptoWall Files...is impossible since there is no way to retrieve the private key that can be used to decrypt your files without paying the ransom.

There is also a lengthy ongoing discussion in this topic: CryptoWall - new variant of CryptoDefense Support & Discussion Topic.

Rather than have everyone start individual topics, it would be best (and more manageable for staff) if you posted any questions, comments or requests for assistance in that topic discussion.

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