Technical Information
To ensure autorun and distribution
Sets the following service settings
- [HKLM\SYSTEM\CurrentControlSet\Services\VLC Player] 'Start' = '00000002'
- [HKLM\SYSTEM\CurrentControlSet\Services\VLC Player] 'ImagePath' = '%ALLUSERSPROFILE%\VLC\VLC Player.exe'
Creates the following services
- 'VLC Player' %ALLUSERSPROFILE%\VLC\VLC Player.exe
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>\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>\dllhost.exe
- <SYSTEM32>\securityhealthsystray.exe
- <SYSTEM32>\oobe\useroobebroker.exe
- <SYSTEM32>\sppextcomobj.exe
- <SYSTEM32>\powercfg.exe
- <SYSTEM32>\conhost.exe
- <SYSTEM32>\slui.exe
- <SYSTEM32>\sc.exe
- <SYSTEM32>\windowspowershell\v1.0\powershell.exe
- <SYSTEM32>\cmd.exe
- <SYSTEM32>\wusa.exe
- <SYSTEM32>\wbem\wmiprvse.exe
the following user processes:
- iexplore.exe
- firefox.exe
- vlc player.exe
Hooks functions
in browsers
- iexplore.exe process, advapi32.dll module
- firefox.exe process, advapi32.dll module
Patches code
in dll
- dialer.exe process, KERNEL32.dll module
- runtimebroker.exe process, ADVAPI32.dll module
- powercfg.exe process, SECHOST.dll module
- powercfg.exe process, ADVAPI32.dll module
- sc.exe process, SECHOST.dll module
- sc.exe process, ADVAPI32.dll module
- powershell.exe process, SECHOST.dll module
- powershell.exe process, ADVAPI32.dll module
- slui.exe process, SECHOST.dll module
- slui.exe process, ADVAPI32.dll module
- cmd.exe process, SECHOST.dll module
- cmd.exe process, ADVAPI32.dll module
- wusa.exe process, SECHOST.dll module
- wusa.exe process, ADVAPI32.dll module
in NTDLL dll
- hsqa.exe process, ntdll.dll module
- dialer.exe process, ntdll.dll module
- powercfg.exe process, ntdll.dll module
- sc.exe process, ntdll.dll module
- vlc player.exe process, ntdll.dll module
- powershell.exe process, ntdll.dll module
- slui.exe process, ntdll.dll module
- cmd.exe process, ntdll.dll module
- wusa.exe process, ntdll.dll module
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\dialer.exe
Searches for windows to
detect analytical utilities:
- ClassName: 'RegmonClass', WindowName: ''
- ClassName: 'FilemonClass', WindowName: ''
- ClassName: '', WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
- ClassName: '', WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
Modifies file system
Creates the following files
- %ALLUSERSPROFILE%\vlc\vlc player.exe
- %WINDIR%\temp\__psscriptpolicytest_3lemk5ku.gpk.ps1
- %WINDIR%\temp\__psscriptpolicytest_jh42hsfh.ndj.psm1
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-08-238.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-08-577.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-08-737.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-08-977.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-09-040.dump
- %WINDIR%\temp\__psscriptpolicytest_2vvgpc4z.bt3.ps1
- %WINDIR%\temp\__psscriptpolicytest_r2hq5ow0.rli.psm1
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-09-325.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-09-367.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-09-448.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-09-718.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-055.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-199.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-364.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-418.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-461.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-515.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-569.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-624.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-10-678.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-11-625.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-11-710.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-11-773.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-11-845.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-11-889.dump
- %WINDIR%\temp\content\1692-5532-powershell.exe-13-53-11-986.dump
- <SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\powershell\startupprofiledata-noninteractive
- %WINDIR%\temp\smnpqwurfxva.sys
Deletes following files that it created itself
- %WINDIR%\temp\__psscriptpolicytest_3lemk5ku.gpk.ps1
- %WINDIR%\temp\__psscriptpolicytest_jh42hsfh.ndj.psm1
- %WINDIR%\temp\__psscriptpolicytest_2vvgpc4z.bt3.ps1
- %WINDIR%\temp\__psscriptpolicytest_r2hq5ow0.rli.psm1
Network activity
Connects to
- 'po##.#ashvault.pro':443
UDP
- DNS ASK po##.#ashvault.pro
Miscellaneous
Searches for the following windows
- ClassName: 'Registry Monitor - Sysinternals: www.sysinternals.com' WindowName: ''
- ClassName: '18467-41' WindowName: ''
Creates and executes the following
- '%ALLUSERSPROFILE%\vlc\vlc player.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 "VLC Player"
- '<SYSTEM32>\sc.exe' create "VLC Player" binpath= "%ALLUSERSPROFILE%\VLC\VLC Player.exe" start= "auto"
- '<SYSTEM32>\sc.exe' stop eventlog
- '<SYSTEM32>\sc.exe' start "VLC Player"
