Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\updates\gujxgoxj
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "<Full path to file>"
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%APPDATA%\gUJXGoxJ.exe"
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v4.0.30319\regsvcs.exe
Modifies file system
Creates the following files
- %APPDATA%\gujxgoxj.exe
- %TEMP%\tmp899e.tmp
- %LOCALAPPDATA%\microsoft\clr_v4.0_32\usagelogs\<File name>.exe.log
- %ALLUSERSPROFILE%\microsoft-onedrive\microsoft-onedrive.dat
Sets the 'hidden' attribute to the following files
- %APPDATA%\gujxgoxj.exe
- %ALLUSERSPROFILE%\microsoft-onedrive\microsoft-onedrive.dat
Network activity
Connects to
- 'oj####u.ddns.net':443
TCP
Other
- 'oj####u.ddns.net':443
UDP
- DNS ASK oj####u.ddns.net
Miscellaneous
Executes the following
- '%WINDIR%\syswow64\schtasks.exe' /Create /TN "Updates\gUJXGoxJ" /XML "%TEMP%\tmp899E.tmp"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regsvcs.exe'
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "<Full path to file>"' (with hidden window)
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%APPDATA%\gUJXGoxJ.exe"' (with hidden window)
- '%WINDIR%\syswow64\schtasks.exe' /Create /TN "Updates\gUJXGoxJ" /XML "%TEMP%\tmp899E.tmp"' (with hidden window)
