Windows Defender found PSW: Win32/Frethog.gen!B

A few days ago windows defender found something it called PSW: Win32/Frethog.gen!B on my laptop.

 

It quarantined it and I then removed it and my computer has been working fine since then. Though I am still afraid something might still be laying around on my computer and therefore I am asking for help to check if I really managed to get the virus gone.

 

I recently had the same problem on my other stationary computer and then changed most of my passwords as well as added two-factor authentication for logins.

 

The file was found in a .dll file in the folder of a program called overwolf, an extension of the teamspeak 3 voice application which also seems weird. Googling it I found others with the same problem considering overwolf which makes me hope this is only a false-positive and windows defender found something that was not there.

 

Posting FRST logs below.

 

 

 

Edited by bazaba, 26 June 2017 - 03:47 AM.

Hello, Welcome to BleepingComputer.
I'm nasdaq and will be helping you.

If you can please print this topic it will make it easier for you to follow the instructions and complete all of the necessary steps in the order listed.
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Press the windows key + r on your keyboard at the same time. This will open the RUN BOX.
Type Notepad and and click the OK key.

Please copy the entire contents of the code box below to a new file.

Start

CreateRestorePoint:
EmptyTemp:
CloseProcesses:

HKLM-x32\...\Run: [] => [X]
CHR Extension: (Betalning via Chrome Web Store) - C:\Users\Mattias\AppData\Local\Google\Chrome\User Data\Default\Extensions\nmmhkkegccagdldgiimedpiccmgmieda [2017-03-09]
CHR Extension: (Chrome Media Router) - C:\Users\Mattias\AppData\Local\Google\Chrome\User Data\Default\Extensions\pkedcjkdefgpdelpbcmbmeomcjbeemfm [2017-05-16]
S3 dbx; system32\DRIVERS\dbx.sys [X]
AlternateDataStreams: C:\Users\Mattias\Documents\bodyfatmen.csv:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\bodyfatmen1.csv:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\bodyfatmen2.csv:com.dropbox.attributes [183]
AlternateDataStreams: C:\Users\Mattias\Documents\functions_SF2930.R:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\Green_and_Competitive_INLUP2_Grupp1_MattiasFahlén_NiklasJohansson.pdf:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\Green_and_Competitive_INLUP2_ny.docx:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\Projekt_20170502.m:com.dropbox.attributes [256]
AlternateDataStreams: C:\Users\Mattias\Documents\Projekt_20170503_graphs.m:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\SF2930 Project 2- MattiasFahlen, RamLange.xlsx:com.dropbox.attributes [183]
AlternateDataStreams: C:\Users\Mattias\Documents\SF2930_IF_RM_2_age.R:com.dropbox.attributes [304]
AlternateDataStreams: C:\Users\Mattias\Documents\SF2930_IF_RM_2_Weight_Age_Climate.R:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\SF2930_IF_RM_2_Weight_Age_Climate_ActivityCode.R:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\SF2930_IF_RM_Weight_ActivityCode.R:com.dropbox.attributes [168]
AlternateDataStreams: C:\Users\Mattias\Documents\tp_test.m:com.dropbox.attributes [168]

End

Save the file as fixlist.txt in the same folder where the Farbar tool is running from.
The location is listed in the 3rd line of the Farbar log you have submitted.

Run FRST and click Fix only once and wait.

The tool will create a log (Fixlog.txt) please post it to your reply.

===

Please download Sophos Virus Removal Tool and save it to your computer's Desktop.

• Right-click the icon and select Run as administrator.
• Click Yes to accept any security warnings that may appear.
• Click the Next button.
• Select 'I accept the terms in the license agreement', then click Next twice.
• Click the Install button and wait until the installation is complete.
• Click the Finish button. The tool created a shortcut icon on the Desktop of your computer.
• Now, double-click the Sophos Virus Removal Tool shortcut icon to run the tool.
• Click Yes to accept any security warnings that may appear.
• After it updates and a "Start Scanning" button appears in the lower right:
  • Disconnect from the Internet or physically unplug your Internet cable connection.
  • Close all open programs, scheduling/updating tasks and background processes that might activate during the scan including the screensaver.
  • Temporarily disable your anti-virus and real-time anti-spyware protection.

• Click the "Start Scanning" button in the lower right to start the scan.
• After starting the scan, do not use the computer until the scan has completed.
• When finished, if it detected anything there will be a "Start Clean-up" button, click it and allow it to finish.
• When finished, re-enable your anti-virus/anti-malware (or reboot) and then you can reconnect to the Internet.
• If any threats are found click Details, then View Log file (bottom left-hand corner).
• Copy and paste its contents in your next reply and note any errors encountered.
• Close the Notepad document, close the Threat Details screen, then click Start cleanup.
• Click Exit to close the program.
• If no threats were found, please confirm that result.

Note: Whenever necessary, the log will be in the following location:

Windows Vista and above:
C:\ProgramData\Sophos\Sophos Virus Removal Tool\Logs\SophosVirusRemovalTool.log

Please let me know of any issues with this computer.