Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\dialersvc64
Sets the following service settings
- [HKLM\SYSTEM\CurrentControlSet\Services\GXHEAKLN] 'Start' = '00000002'
- [HKLM\SYSTEM\CurrentControlSet\Services\GXHEAKLN] 'ImagePath' = '%ALLUSERSPROFILE%\zudekewvkkce\hknlznogijni.exe'
- [HKLM\SYSTEM\CurrentControlSet\Services\WinRing0_1_2_0] 'ImagePath' = '%WINDIR%\TEMP\WinRing0x64.sys'
Creates the following services
- 'GXHEAKLN' %ALLUSERSPROFILE%\zudekewvkkce\hknlznogijni.exe
- 'WinRing0_1_2_0' %WINDIR%\TEMP\WinRing0x64.sys
Malicious functions
To complicate detection of its presence in the operating system,
blocks the following features:
- Windows Event Logging
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
Injects code into
the following system processes:
- <SYSTEM32>\dllhost.exe
- <SYSTEM32>\dialer.exe
- <SYSTEM32>\winlogon.exe
- <SYSTEM32>\lsass.exe
- <SYSTEM32>\svchost.exe
- <SYSTEM32>\dwm.exe
- <SYSTEM32>\wudfhost.exe
- <SYSTEM32>\spoolsv.exe
- <SYSTEM32>\sihost.exe
- <SYSTEM32>\taskhostw.exe
- %WINDIR%\explorer.exe
- <SYSTEM32>\runtimebroker.exe
- <SYSTEM32>\securityhealthsystray.exe
- <SYSTEM32>\oobe\useroobebroker.exe
- <SYSTEM32>\sc.exe
- <SYSTEM32>\conhost.exe
- <SYSTEM32>\powercfg.exe
- <SYSTEM32>\windowspowershell\v1.0\powershell.exe
the following user processes:
- iexplore.exe
- firefox.exe
- hknlznogijni.exe
Hooks functions
in browsers
- iexplore.exe process, advapi32.dll module
- firefox.exe process, advapi32.dll module
Patches code
in dll
- dllhost.exe process, KERNEL32.dll module
- winlogon.exe process, pdh.dll module
- lsass.exe process, pdh.dll module
- svchost.exe process, pdh.dll module
- dwm.exe process, pdh.dll module
- wudfhost.exe process, pdh.dll module
- spoolsv.exe process, pdh.dll module
- sihost.exe process, pdh.dll module
- taskhostw.exe process, pdh.dll module
- runtimebroker.exe process, pdh.dll module
- runtimebroker.exe process, ADVAPI32.dll module
- securityhealthsystray.exe process, pdh.dll module
- iexplore.exe process, pdh.dll module
- firefox.exe process, pdh.dll module
- useroobebroker.exe process, pdh.dll module
- sc.exe process, pdh.dll module
- sc.exe process, SECHOST.dll module
- sc.exe process, ADVAPI32.dll module
- powercfg.exe process, pdh.dll module
- powercfg.exe process, SECHOST.dll module
- powercfg.exe process, ADVAPI32.dll module
- powershell.exe process, pdh.dll module
- powershell.exe process, SECHOST.dll module
- powershell.exe process, ADVAPI32.dll module
in AMSI dll
- powershell.exe process, Amsi.dll module
in NTDLL dll
- dllhost.exe process, ntdll.dll module
- sc.exe process, ntdll.dll module
- powercfg.exe process, ntdll.dll module
- powershell.exe process, ntdll.dll module
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\windowspowershell\v1.0\powershell.exe
- <SYSTEM32>\dllhost.exe
Modifies file system
Creates the following files
- %ALLUSERSPROFILE%\zudekewvkkce\hknlznogijni.exe
- %WINDIR%\temp\__psscriptpolicytest_4ar5jtd1.01n.ps1
- %WINDIR%\temp\__psscriptpolicytest_ed5omiuf.uyr.psm1
- %WINDIR%\temp\__psscriptpolicytest_1nj5wbeb.nf1.ps1
- %WINDIR%\temp\__psscriptpolicytest_vyfezk3p.tw5.psm1
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-40-836.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-090.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-179.dump
- %WINDIR%\temp\content\3880-2704-powershell.exe-17-42-41-210.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-373.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-395.dump
- %WINDIR%\temp\__psscriptpolicytest_kg2vae33.5im.ps1
- %WINDIR%\temp\__psscriptpolicytest_kl3a133v.0uj.psm1
- %WINDIR%\temp\content\3880-2704-powershell.exe-17-42-41-511.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-558.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-581.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-627.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-712.dump
- %WINDIR%\temp\content\3880-2704-powershell.exe-17-42-41-743.dump
- %WINDIR%\temp\content\3880-2704-powershell.exe-17-42-41-797.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-828.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-41-897.dump
- %WINDIR%\temp\content\3880-2704-powershell.exe-17-42-41-944.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-003.dump
- %WINDIR%\temp\content\3880-2704-powershell.exe-17-42-42-026.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-026.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-058.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-090.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-119.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-143.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-164.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-539.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-608.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-639.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-655.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-725.dump
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-779.dump
- <SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\powershell\startupprofiledata-noninteractive
- %WINDIR%\temp\content\2504-1996-powershell.exe-17-42-42-965.dump
- %WINDIR%\temp\xxitssdseypv.sys
- %WINDIR%\temp\__psscriptpolicytest_ld1kukkw.i0m.ps1
- %WINDIR%\temp\__psscriptpolicytest_3t2t35ch.qja.psm1
- %WINDIR%\temp\content\1292-2164-powershell.exe-17-42-49-308.dump
- %WINDIR%\temp\content\1292-2164-powershell.exe-17-42-49-624.dump
- %WINDIR%\temp\content\1292-2164-powershell.exe-17-42-49-836.dump
- %WINDIR%\temp\content\1292-2164-powershell.exe-17-42-49-899.dump
- %WINDIR%\temp\content\1292-2164-powershell.exe-17-42-50-021.dump
- %WINDIR%\temp\content\1292-2164-powershell.exe-17-42-50-099.dump
- <SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\ie\scanner[1].exe
- %ALLUSERSPROFILE%\reutvvrwcv.exe
- <SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\ie\scanner[2].exe
- %ALLUSERSPROFILE%\dngzrsfvax.exe
Deletes following files that it created itself
- %WINDIR%\temp\__psscriptpolicytest_4ar5jtd1.01n.ps1
- %WINDIR%\temp\__psscriptpolicytest_ed5omiuf.uyr.psm1
- %WINDIR%\temp\__psscriptpolicytest_1nj5wbeb.nf1.ps1
- %WINDIR%\temp\__psscriptpolicytest_vyfezk3p.tw5.psm1
- %WINDIR%\temp\__psscriptpolicytest_kg2vae33.5im.ps1
- %WINDIR%\temp\__psscriptpolicytest_kl3a133v.0uj.psm1
- <SYSTEM32>\tasks\dialersvc64
- %WINDIR%\temp\__psscriptpolicytest_ld1kukkw.i0m.ps1
- %WINDIR%\temp\__psscriptpolicytest_3t2t35ch.qja.psm1
Network activity
Connects to
- 'po##.#upportxmr.com':9000
- 'po####n.drpc.org':443
- 'pt#####n.duckdns.org':80
TCP
HTTP GET requests
HTTP POST requests
Other
- 'pa###bin.com':443
- 'po##.#upportxmr.com':9000
UDP
- DNS ASK po##.#upportxmr.com
- DNS ASK po####n.drpc.org
- DNS ASK pa###bin.com
- DNS ASK pt#####n.duckdns.org
Miscellaneous
Creates and executes the following
- '%ALLUSERSPROFILE%\zudekewvkkce\hknlznogijni.exe'
Executes the following
- '<SYSTEM32>\cmd.exe' /c wusa /uninstall /kb:890830 /quiet /norestart
- '<SYSTEM32>\sc.exe' stop UsoSvc
- '<SYSTEM32>\sc.exe' stop WaaSMedicSvc
- '<SYSTEM32>\wusa.exe' /uninstall /kb:890830 /quiet /norestart
- '<SYSTEM32>\sc.exe' stop wuauserv
- '<SYSTEM32>\sc.exe' stop bits
- '<SYSTEM32>\sc.exe' stop dosvc
- '<SYSTEM32>\powercfg.exe' /x -hibernate-timeout-ac 0
- '<SYSTEM32>\powercfg.exe' /x -hibernate-timeout-dc 0
- '<SYSTEM32>\powercfg.exe' /x -standby-timeout-ac 0
- '<SYSTEM32>\powercfg.exe' /x -standby-timeout-dc 0
- '<SYSTEM32>\dialer.exe'
- '<SYSTEM32>\sc.exe' delete "GXHEAKLN"
- '<SYSTEM32>\sc.exe' create "GXHEAKLN" binpath= "%ALLUSERSPROFILE%\zudekewvkkce\hknlznogijni.exe" start= "auto"
- '<SYSTEM32>\sc.exe' stop eventlog
- '<SYSTEM32>\sc.exe' start "GXHEAKLN"
- '<SYSTEM32>\cmd.exe' /c choice /C Y /N /D Y /T 3 & Del "<Full path to file>"
- '<SYSTEM32>\choice.exe' /C Y /N /D Y /T 3
- '<SYSTEM32>\dllhost.exe' /Processid:{3070b4dc-d4fc-4bd3-8ea1-e72499ef088f}
- '<SYSTEM32>\dllhost.exe' /Processid:{43e31511-bc9f-4cc2-b179-f0ce906b9181}
