Windows 10: Unknown User accounts appearing (malware related??)

Discus and support Unknown User accounts appearing (malware related??) in User Accounts and Family Safety to solve the problem; Hello, Today I discovered strange account names on my laptop after trying to open files on one of my drives which also had strange names and were not... Discussion in 'User Accounts and Family Safety' started by Stef0099, Feb 25, 2017.

  1. STEF0099
    Stef0099 Win User

    Unknown User accounts appearing (malware related??)


    Hello,
    Today I discovered strange account names on my laptop after trying to open files on one of my drives which also had strange names and were not mine. I suspect my laptop is infected with some kind of malware but unfortunately all scans (malwarebytes, f-secure, hitmanpro,..)do not flag up a specific threat.
    I attach a printscreen:

    The above two windows indicate the useraccounts (see top two) with content of one of them (top right). The down-left window indicates the files I tried to open and which may have installed some malware an created these accounts (not sure however if they were there already before).


    Unknown User accounts appearing (malware related??) [​IMG]

    Furthermore each time I try to delete the random named folders-files on drive D (bottom left window of the printscreen), they re-appear with different names...

    I did not try to remove the useer accounts yet and have no idea how I safely could.
    Please help.
    Kind regards
    Stef

    :)
     
    Stef0099, Feb 25, 2017
    #1
  2. HARIKRISHNAN27
    Harikrishnan27 Win User

    Unknown User Account

    In my windows 10, most of the application's user name there is an unknown name which I observed is " Account Unknown(s-1-15-3-.....etc )".Is it a malware or rat or inbuilt username. Someone please tell me what it is..

    * Moved from Virus & Malware
     
    Harikrishnan27, Feb 25, 2017
    #2
  3. RIEL ALC
    Riel Alc Win User
    How to reassign ownership/permission from one user (deleted) to another systematically in Windows 10

    Hi Roland,

    The Account Unknown user account is an user account that was created and then deleted at some point. This usually appears because "S-1-5-21......." is no longer stored as user account.

    For more information about Account Unknown, please check the following thread:


    Feel free to post back should you need further help.
     
    Riel Alc, Feb 25, 2017
    #3
  4. CALEDON KEN
    Caledon Ken Win User

    Unknown User accounts appearing (malware related??)

    Caledon Ken, Feb 25, 2017
    #4
  5. STEF0099
    Stef0099 Win User
    Thanks for the reply Ken.
    I am not using Eset but I did install a number of weeks ago Cybereason Ransomfree...Could this program be doing this?
     
    Stef0099, Mar 10, 2017
    #5
  6. BREE
    Bree New Member
    Could be...

    In Progress - Strange Folders | Tech Support Guy
     
    Bree, Apr 5, 2018
    #6
Thema:

Unknown User accounts appearing (malware related??)

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