Windows 10: Weird behavior, possible Trojan

  1.    08 Feb 2017 #1

    Weird behavior, possible Trojan

    1. Volume icon appears with a red cross even though all sound devices are working.
    2. With UAC set to default, a notification pops up at startup asking my permission to run explorer.exe
    3. I can't run some programs.
    4. Malwarebytes web protection suddenly disabled and can't be re-enabled. I'm using the latest one.
    5. System restore fails all the time, so can't go that path either.

    I suspect it is malware that targets/makes a fake explorer.exe, but not entirely convinced since there is only one instance and the CPU load is not constantly high. but I want to know if anyone has encountered this before and might point me int the right direction, like the name of the malware, perhaps.

    Thanks, everyone!
      My ComputerSystem Spec

  2. Bree's Avatar
    Posts : 8,607
    10 Home x64 (1803) (10 Pro on 2nd pc)
       08 Feb 2017 #2

    frankmanguiob said: View Post
    4. Malwarebytes web protection suddenly disabled and can't be re-enabled. I'm using the latest one.
    Welcome to TenForums @frankmanguiob

    Have you tried a scan with Malwarebyte Chameleon? If you are using 3, see:
    Malwarebytes | Chameleon - Free Malware Removal Tool

    There's also Defender Offline.
    Windows Defender Offline Scan in Windows 10
      My ComputersSystem Spec

  3.    08 Feb 2017 #3


    Welcome to TenForums!

    You can give this tool a try to see what it finds...

    Please use the Farbar Recovery Scan Tool Download
    Save FRST to your Desktop.
    [Note: You need to run the version compatible with your system: 32 bit or 64 bit]

    Double-click FRST to run it.
    When the tool opens click Yes to the disclaimer.
    Next, press the Scan button.

    When done, the tool makes a log (FRST.txt) on the Desktop.
    Also, the first time the tool is run, it makes another log: (Addition.txt).

    Please attach both reports in your reply.

    Note: FYI, MBAM v3 has experienced problems lately.
      My ComputerSystem Spec

  4.    09 Feb 2017 #4


    Thanks! Chameleon ran but it didn't detect anything. Defender offline doesn't work for some reason. I can't even view event logs.
      My ComputerSystem Spec

  5.    09 Feb 2017 #5

      My ComputerSystem Spec

  6.    09 Feb 2017 #6

      My ComputerSystem Spec

  7.    09 Feb 2017 #7

    Hi cottonball,


    Please see the attached.

    Weird behavior, possible Trojan Attached Files
      My ComputerSystem Spec

  8.    11 Feb 2017 #8


    My apology for the delay. Can't remember getting a notification of your reply.

    Looked at the reports provided, and did not see malware.

    You may want to run a System File Check on the OS:
    SFC Command - Run in Windows 10

    Use: Option Three

    If you see: Windows Resource Protection found integrity violations

    Then, please reboot, and run the sfc /scannow command again.

    Sometimes it takes running the sfc /scannow command up to 3 times before all is fixed.

    If no luck, and still looking at integrity violation, please use Option Five: To View Only the "SFC" Scan Results from the CBS.LOG

    Next, attach the sfcdetails.txt in you reply for someone to look at.
      My ComputerSystem Spec


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