Encrypted files with Cryptowall 3.0 but unable to detect using Malwarebytes

[pcguy313]

I have files that are encrypted and state they are being encrypted by Cryptowall 3.0. I've ran Malwarebytes scan, Malwarebytes rootkit scan, I ran Hitman. Nothing is finding anything related to the cryptowall. Could the source of the malware be on another computer connected to a network but not present on the computer with the encrypted files?

[pcguy313]

Additionally, I ran listcwall and it did not detect any encrypted files even though I have folders with encrypted files. I suppose they haven't been recorded on the registry? Is there a way to detect encrypted files not displaying on the registry?

[kevinf80]

Hello and welcome,

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Have a read of the tutorial regarding Cryptowall infections...

 

http://www.bleepingcomputer.com/virus-removal/cryptowall-ransomware-information

 

Your files will more than likely not be recoverable, but there maybe a slim chance. Have a read at the following link:

 

http://www.bleepingcomputer.com/virus-removal/cryptowall-ransomware-information#restore

 

Next,

 

Please open Malwarebytes Anti-Malware.

• On the Settings tab > Detection and Protection sub tab, Detection Options, tick the box "Scan for rootkits".
• Under Non-Malware Protection sub tab Change PUP and PUM entries to Treat detections as Malware
• Click on the Scan tab, then click on Scan Now >> . If an update is available, click the Update Now button.
• A Threat Scan will begin.
• With some infections, you may or may not see this message box.
  
          'Could not load DDA driver'
• Click 'Yes' to this message, to allow the driver to load after a restart.
• Allow the computer to restart. Continue with the rest of these instructions.
• When the scan is complete, click Apply Actions.
• Wait for the prompt to restart the computer to appear, then click on Yes.
• After the restart once you are back at your desktop, open MBAM once more.
  

To get the log from Malwarebytes do the following:

• Click on the History tab > Application Logs.
• Double click on the scan log which shows the Date and time of the scan just performed.
• Click Export > From export you have three options:
  
    Copy to Clipboard - if seleted right click to your reply and select "Paste" log will be pasted to your reply
    Text file (*.txt)        - if selected you will have to name the file and save to a place of choice, recommend "Desktop" then attach to reply
    XML file (*.xml)      - if selected you will have to name the file and save to a place of choice, recommend "Desktop" then attach to reply
• Please use "Copy to Clipboard, then Right click to your reply > select "Paste" that will copy the log to your reply…
  

If Malwarebytes is not installed follow these instructions first:

Download Malwarebytes Anti-Malware to your desktop.

• Double-click mbam-setup and follow the prompts to install the program.
• At the end, be sure a checkmark is placed next to the following:
• Launch Malwarebytes Anti-Malware
• A 14 day trial of the Premium features is pre-selected. You may deselect this if you wish, and it will not diminish the scanning and removal capabilities of the program.
• Click Finish. Follow the instructions above....
  

 
Next,
 
Download Farbar Recovery Scan Tool and save it to your desktop.

Note: You need to run the version compatible with your system (32 bit or 64 bit). If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.

• Double-click to run it. When the tool opens click Yes to disclaimer.
  (Windows 8 users will be prompted about Windows SmartScreen protection - click More information and Run.)
• Press Scan button to run the tool....
• It will make a log (FRST.txt) in the same directory the tool is run. Please copy and paste it to your reply.
• The first time the tool is run, it makes also another log (Addition.txt). Please attach it to your reply.
  

 

Next,

 

Please download RogueKiller and save it to your desktop from the following link: http://www.bleepingcomputer.com/download/roguekiller/

• Quit all running programs.
• For Windows XP, double-click to start.
• For Vista,Windows 7/8/8.1/10, Right-click on the program and select Run as Administrator to start and when prompted allow it to run.
• Read and accept the EULA (End User Licene Agreement)
• Click Scan to scan the system.
• When the scan completes select "Report",in the next window select "Export txt" the log will open as a text file post that log... Also save to your Desktop for reference. log will open.
• Close the program > Don't Fix anything!
  

 

Let me see those logs in your reply...

 

Thank you,

 

Kevin
 

[pcguy313]

I have ran all the requested scans. The logs are attached. Could the ransomware encrypted files over RDP but not be present locally on my computer or the network?

Addition_28-09-2015_11-59-34.txt

FRST_28-09-2015_11-59-34.txt

malware scan.txt

roguekiller disks.txt

roguekiller registry.txt

[kevinf80]

I do not see evidence of Cryptowall infection, continue please..

 

MSE is your active anti-virus, I also see Avast installed. Can you UNinstall Avast if you prefer to keep MSE..

 

Removal tool avaialable here: https://www.avast.com/uninstall-utility

 

Next,

 

Download attached fixlist.txt file (end of reply) and save it to the Desktop, or the folder you saved FRST into.
NOTE. It's important that both FRST and fixlist.txt are in the same location or the fix will not work.

Run FRST and press the Fix button just once and wait.
The tool will make a log on the Desktop (Fixlog.txt) or the folder it was ran from. Please post it to your reply.
 

Next,

 

Download AdwCleaner by Xplode onto your Desktop.
 

• Double click on Adwcleaner.exe to run the tool.
• Click on the Scan in the Actions box
• Please wait fot the scan to finish..
• When "Waiting for action.Please uncheck elements you want to keep" shows in top line..
• Click on the Cleaning box.
• Next click OK on the "Closing Programs" pop up box.
• Click OK on the Information box & again OK to allow the necessary reboot
• After restart the AdwCleaner(C*)-Notepad log will appear, please copy/paste it in your next reply. Where * is the number relative to list of scans completed...

 

 

Next,

 

Please download Junkware Removal Tool to your desktop.
 

• Shut down your protection software now to avoid potential conflicts. (re-enable when done)
• Run the tool by double-clicking it. If you are using Windows Vista, 7, or 8; instead of double-clicking, right-mouse click JRT.exe and select "Run as Administrator".
• The tool will open and start scanning your system.
• Please be patient as this can take a while to complete depending on your system's specifications.
• On completion, a log (JRT.txt) is saved to your desktop and will automatically open.
• Post the contents of JRT.txt into your next message.

 

 

Next,

 

Scan with ESET Online Scanner

This step can only be done using Internet Explorer, Google Chrome or Mozilla Firefox.
Temporary disable your AntiVirus and AntiSpyware protection - instructions here.
Please visit ESET Online Scanner website.

Click there Run ESET Online Scanner.

If using Internet Explorer:
 

• Accept the Terms of Use and click Start.
• Allow the running of add-on.

If using Mozilla Firefox or Google Chrome:

• Download esetsmartinstaller_enu.exe that you'll be given link to.
• Double click esetsmartinstaller_enu.exe.
• Allow the Terms of Use and click Start.

To perform the scan:

• Make sure that Remove found threats is unchecked.
• Scan archives is checked.
• In Advanced Settings: Scan for potentially unwanted applications, Scan for potentially unsafe applications and Enable Anti-Stealth technology are checked.
• Under “Enable Stealth Technology select “Change” select any extra drives in that window.
• Click Start
• The program will begin to download it's virus database. The speed may vary depending on your Internet connection.
• When completed, the program will begin to scan. This may take several hours. Please, be patient.
• Do not do anything on your machine as it may interrupt the scan.
• When the scan is done, click Finish.
• A logfile will be created at C:\Program Files (x86)\ESET\ESET Online Scanner. Open it using Notepad.

Please include this logfile in your next reply.

Don't forget to re-enable security software!
 

 

Post those logs, also let me know if any remaining issues or concerns...

 

Thanks,

 

Kevin

Fixlist.txt

[Naathim]

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