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Trojan.crypt detected, unsure if more action is required.


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Hello,
I'm generally pretty careful but somehow managed to pick up a Trojan.Crypt in my APPDATA\LOCAL\TEMP folder going by "TMP1068.TMP".

Despite not doing anything out of the ordinary (aside from downloading something directly from the steam client).

After quarantine I ran full scans again with both Windows Defender and Malwarebytes. Also did the offline scan for windows defender after those completed and showed no results.

I'm not sure if I need to do more than quarantine the item. Is there a risk to continue using this computer? The infection was definitely less than a day old.

malwarebyteslog.txt

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Hello @Snow02  and  :welcome:

 

My name is MKDB and I will assist you.

 

 

Some ground rules:

  • Please follow the steps in the given order and post back the log files.
  • Please attach all log files into your post.
  • Temporarily disable your antivirus or other security software first. Make sure to turn it back on once the scans are completed.
  • Temporarily disable Microsoft SmartScreen to download software below if needed. Make sure to turn it back on once the scans are completed.
  • Searching, detecting and removing malware isn't instantaneous and there is no guarantee to repair every system. Before we start, please make sure that you have an external backup, not connected to this system, of all private data.
  • Please be patient and stick with me until I give you the "all clear".
  • Only run the tools I guide you to. Please don't run any other scans, download, install or uninstall any programs while I'm working with you.
  • Cracked or hacked or pirated programs are not only illegal, but also will make a computer a malware victim. Having such programs installed, is the easiest way to get infected. It is the leading cause of ransomware encryptions. It is at times also big source of current trojan infections. Please uninstall them now, if any are here, before we start the cleaning procedure.
  • As English is not my native language, please do not use slang or idoms. It may be hard for me to understand.
  • If you do not respond within 4 days, your topic will be closed.

 

 

 

Step 1

Please download the suitable version of Farbar Recovery Scan Tool (FRST) and save it to your desktop: 32bit | 64bit

  • Double-click to run it. When the tool opens, click Yes to disclaimer.
  • Press the Scan button.
  • FRST will create two logs (FRST.txt + Addition.txt) in the same directory the tool is run.
  • Please attach these logfiles to your next reply.
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Thank you @Snow02.

There's no reason to apologize. Due to different time zones, we must be patient.

 

Step 1

  • Please download the attached fixlist.txt file and save it to the location where you ran FRST from ( C:\Users\dgsno\OneDrive\Desktop\ ).

Note: It's important that both files, FRST and fixlist.txt are in the same location or the fix will not work.

  • Close all open programs and save your work.
  • Run FRST again.
  • Press the Fix button only once and wait. Please be patient and do not interfere, even if FRST does not respond for some time. That's nothing to worry about.
  • If the tool needs a restart, please make sure you let the system restart normally and let the tool complete its run after restart.
  • FRST will create one log now (Fixlog.txt) in the same directory the tool is run.
  • Please attach this logfile to your next reply.

 

 

 

Step 2

The Microsoft Safety Scanner (MSS) is a free Microsoft stand-alone virus scanner that can be used to scan for & remove malware or potentially unwanted software from a system.

  • The download links & the how-to-run-the tool are at this link at Microsoft.
  • Please let me know the results of this scan.
  • Run a Quick Scan.
  • The log is named MSERT.log.
  • The log will be at%SYSTEMROOT%\debug\msert.log which in most cases is

C:\Windows\debug\msert.log

  • Please attach that log with your next reply.

 

 

 

fixlist.txt

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Well done @Snow02.

One final check, please.

 

Step 1

Let me have you run a different scanner to double-check. I don't expect it to find anything, but no harm in checking.

I would suggest a free scan with the ESET Online Scanner

Go to https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

 

  • It will start a download of "esetonlinescanner.exe".
  • Save the file to your system, such as the Downloads folder, or else to the Desktop.
  • Go to the saved file, and double click it to get it started. 
  • When presented with the initial ESET options, click on "Computer Scan".
  • Next, when prompted by Windows, allow it to start by clicking Yes.
  • When prompted for scan type, Click on Full scan
  • Look at & tick  ( select )   the radio selection "Enable ESET to detect and quarantine potentially unwanted applications"   and click on the Start scan button.
  • Have patience.  The entire process may take an hour or more. There is an initial update download.
  • There is a progress window display.
  • You should ignore all prompts to get the ESET antivirus software program.  (e.g. their standard program). You do not need to buy or get or install anything else.
  • When the scan is completed, if something was found, it will show a screen with the number of detected items.  If so, click the button marked “View detected results”.
  • Click The blue “Save scan log” to save the log.
  • If something was removed and you know it is a false finding, you may click on the blue ”Restore cleaned files”  (in blue, at the bottom).
  • Press Continue when all done.  You should click to off the offer for “periodic scanning”.

 

Note: If you do need to do a File Restore from ESET please follow the directions below

[KB2915] Restore files quarantined by the ESET Online Scanner version 3

https://support.eset.com/en/kb2915-restore-files-quarantined-by-the-eset-online-scanner

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Well done @Snow02.

Maybe a false positive from MBAM. According to the logfiles, I could not find any malware.

 

Thank you for your cooperation, we're done. 👍

 

Final Step

  • Right-Click on FRST64 and choose Rename.
  • Rename FRST64 into Uninstall.
  • Run Uninstall.
  • FRST and it’s files/folders will be deleted.
  • If the tool needs a restart, please make sure you let the system restarts normally.

 

 

 

A few final recommendations:

  1. Recommend using a Password Manager for all websites, etc. that require a password. Never use the same password on more than one site.
    https://www.howtogeek.com/240255/password-managers-compared-lastpass-vs-keepass-vs-dashlane-vs-1password/
  2. Make sure you're backing up your files https://forums.malwarebytes.com/topic/136226-backup-software/
  3. Keep all software up to date - PatchMyPC - https://patchmypc.com/home-updater#download
  4. Keep your Operating System up to date and current at all times - https://support.microsoft.com/en-us/windows/windows-update-faq-8a903416-6f45-0718-f5c7-375e92dddeb2
  5. Further tips to help protect your computer data and improve your privacy: https://forums.malwarebytes.com/topic/258363-tips-to-help-protect-from-infection/ 
  6. Please consider installing the following Content Blockers for your Web browsers if you haven't done so already. This will help improve overall security

Malwarebytes Browser Guard

uBlock Origin

 

Further reading if you like to keep up on the malware threat scene: Malwarebytes Blog  https://blog.malwarebytes.com/

Hopefully, we've been able to assist you with correcting your system issues.

Thank you for using Malwarebytes.

 

 

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  • Root Admin

Glad we could help.

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request.

This applies only to the originator of this thread. Other members who need assistance please start your own topic in a new thread.

Please review the following to help you better protect your computer and privacy Tips to help protect from infection

Thank you

 

 

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