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Trojan.DownLoader33.54484

Added to the Dr.Web virus database: 2020-06-15

Virus description added:

Technical Information

Malicious functions
Executes the following
  • '%WINDIR%\syswow64\taskkill.exe' /f /im <File name>.exe
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM Winabler.exe
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM DeDe.exe
Searches for windows to
detect analytical utilities:
  • ClassName: '', WindowName: 'PEiD'
Modifies file system
Creates the following files
  • <Current directory>\delete.bat
Moves itself
  • from <Full path to file> to <Current directory>\tzgodazgeg.exe
Network activity
TCP
HTTP GET requests
  • http://www.google.com/
  • http://as#.###domhack-wf.ru/server_connection.php?g=####################################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=############################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=#####################################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=################################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=#################################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=##################################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=##############################################################
  • http://as#.###domhack-wf.ru/server_connection.php?g=###############################################################
UDP
  • DNS ASK google.com
  • DNS ASK as#.###domhack-wf.ru
Miscellaneous
Searches for the following windows
  • ClassName: '' WindowName: ''
  • ClassName: '' WindowName: 'HTTP Analyzer V6 (Unregistered Version)'
  • ClassName: '' WindowName: 'HTTP Analyzer V5 (Unregistered Version)'
  • ClassName: '' WindowName: 'HTTP Analyzer V4 (Unregistered Version)'
  • ClassName: '' WindowName: 'HTTP Analyzer V3 (Unregistered Version)'
  • ClassName: '' WindowName: 'HTTP Analyzer V2 (Unregistered Version)'
  • ClassName: '' WindowName: 'HTTP Analyzer V8 (Unregistered Version)'
  • ClassName: '' WindowName: '111'
  • ClassName: '' WindowName: 'Httpanalyzerstdv2'
  • ClassName: '' WindowName: 'OllyDBG'
  • ClassName: '' WindowName: 'MyDEBUG'
  • ClassName: '' WindowName: 'Winabler'
  • ClassName: '' WindowName: 'DeDe'
  • ClassName: '' WindowName: 'Wireshark'
  • ClassName: '' WindowName: 'IDA'
  • ClassName: '' WindowName: 'HTTP Analyzer V7 (Unregistered Version)'
  • ClassName: '' WindowName: 'HTTP Analyzer V9'
  • ClassName: '' WindowName: 'HTTP Analyzer V8'
  • ClassName: '' WindowName: 'HTTP Analyzer V2'
  • ClassName: '' WindowName: 'HTTP Analyzer V3'
  • ClassName: '' WindowName: 'HTTP Analyzer V4'
  • ClassName: '' WindowName: 'HTTP Analyzer V5'
  • ClassName: '' WindowName: 'HTTP Analyzer V7'
  • ClassName: '' WindowName: 'HTTP Analyzer V6'
  • ClassName: '' WindowName: 'HTTP Analyzer V9 (Unregistered Version)'
  • ClassName: '' WindowName: 'Httpanalyzerstdv3'
  • ClassName: '' WindowName: 'Httpanalyzerstdv4'
  • ClassName: '' WindowName: 'Httpanalyzerstdv5'
  • ClassName: '' WindowName: 'Httpanalyzerstdv6'
  • ClassName: '' WindowName: 'Httpanalyzerstdv7'
  • ClassName: '' WindowName: 'Httpanalyzerstdv8'
  • ClassName: '' WindowName: 'Httpanalyzerstdv9'
  • ClassName: '' WindowName: 'YDbg'
  • ClassName: '' WindowName: 'Scylla'
Creates and executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c taskkill /f /im <File name>.exe & rename "<File name>.exe" "TZGodaZgEg.exe" & start TZGodaZgEg.exe' (with hidden window)
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM Winabler.exe' (with hidden window)
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM DeDe.exe' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c taskkill /f /im <File name>.exe & rename "<File name>.exe" "TZGodaZgEg.exe" & start TZGodaZgEg.exe
  • '%WINDIR%\syswow64\cmd.exe' /c ""<Current directory>\delete.bat" "
  • '%WINDIR%\syswow64\ipconfig.exe' /flushdns

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android

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