Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'sppsvc' = '"<Current directory>\sppsvc.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'sppsvc' = '"<Current directory>\sppsvc.exe"'
- [HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "<Current directory>\sppsvc.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'dwm' = '"%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'dwm' = '"%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe"'
- [HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "<Current directory>\sppsvc.exe", "%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'taskhost' = '"%ProgramFiles%\DVD Maker\Shared\DvdStyles\Vignette\taskhost.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'taskhost' = '"%ProgramFiles%\DVD Maker\Shared\DvdStyles\Vignette\taskhost.exe"'
- [HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, "<Current directory>\sppsvc.exe", "%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe", "%Pr...
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '"C:\Users\Public\Downloads\lsass.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '"C:\Users\Public\Downloads\lsass.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '"C:\MSOCache\All Users\{90140000-0117-0409-1000-0000000FF1CE}-C\Access.en-us\lsass.exe"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '"C:\MSOCache\All Users\{90140000-0117-0409-1000-0000000FF1CE}-C\Access.en-us\lsass.exe"'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] '<File name>' = '"<Full path to file>"'
- [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] '<File name>' = '"<Full path to file>"'
Creates or modifies the following files
- <SYSTEM32>\tasks\sppsvcs
- <SYSTEM32>\tasks\sppsvc
- <SYSTEM32>\tasks\dwmd
- <SYSTEM32>\tasks\dwm
- <SYSTEM32>\tasks\taskhostt
- <SYSTEM32>\tasks\taskhost
- <SYSTEM32>\tasks\lsassl
- <SYSTEM32>\tasks\lsass
- <SYSTEM32>\tasks\<File name>r
- <SYSTEM32>\tasks\<File name>
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0117-0409-1000-0000000FF1CE}-C\Access.en-us\lsass.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath '%ProgramFiles%\DVD Maker\Shared\DvdStyles\Vignette\taskhost.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath '%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath '<Current directory>\sppsvc.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/Users/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/MSOCache/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/kms/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/idkgn/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:/$Recycle.Bin/'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\Downloads\lsass.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath '<Full path to file>'
Modifies file system
Creates the following files
- <Current directory>\b208938fe05b4b
- %HOMEPATH%\desktop\cylvyutf.log
- %HOMEPATH%\desktop\wqybszev.log
- %HOMEPATH%\desktop\fjqlfiey.log
- %HOMEPATH%\desktop\gzagjxov.log
- %HOMEPATH%\desktop\rdprwyuz.log
- %HOMEPATH%\desktop\etbzjiyc.log
- nul
- %TEMP%\z6zmwd7hdr.bat
- %TEMP%\gqmcqcvjic
- %TEMP%\u5tkncof.out
- %HOMEPATH%\desktop\cibaufij.log
- %TEMP%\u5tkncof.cmdline
- <Current directory>\0a1fd5f707cd16
- <Current directory>\sppsvc.exe
- %WINDIR%\installer\{90140000-0043-0000-1000-0000000ff1ce}\6cb0b6c459d5d3
- %WINDIR%\installer\{90140000-0043-0000-1000-0000000ff1ce}\dwm.exe
- %ProgramFiles%\dvd maker\shared\dvdstyles\vignette\b75386f1303e64
- %ProgramFiles%\dvd maker\shared\dvdstyles\vignette\taskhost.exe
- C:\users\public\downloads\6203df4a6bafc7
- C:\users\public\downloads\lsass.exe
- C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\access.en-us\6203df4a6bafc7
- C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\access.en-us\lsass.exe
- %TEMP%\u5tkncof.0.cs
- %HOMEPATH%\desktop\bsqfrqyn.log
Deletes the following files
- %TEMP%\u5tkncof.cmdline
- %TEMP%\u5tkncof.0.cs
- %TEMP%\u5tkncof.out
- %TEMP%\gqmcqcvjic
Moves the following files
- from %ProgramFiles%\microsoft office\office14\bcssync.exe to %ProgramFiles%\microsoft office\office14\bcssync.exe.exe
Miscellaneous
Creates and executes the following
- 'C:\users\public\downloads\lsass.exe'
Executes the following
- '<SYSTEM32>\schtasks.exe' /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'<Current directory>\sppsvc.exe'" /f
- '<SYSTEM32>\cmd.exe' /C "%TEMP%\z6ZMWD7HdR.bat"
- '<SYSTEM32>\schtasks.exe' /create /tn "<File name>r" /sc MINUTE /mo 7 /tr "'<Full path to file>'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "<File name>" /sc ONLOGON /tr "'<Full path to file>'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "<File name>r" /sc MINUTE /mo 12 /tr "'<Full path to file>'" /f
- '<SYSTEM32>\schtasks.exe' /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-1000-0000000FF1CE}-C\Access.en-us\lsass.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "lsass" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0117-0409-1000-0000000FF1CE}-C\Access.en-us\lsass.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "lsassl" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-1000-0000000FF1CE}-C\Access.en-us\lsass.exe'" /f
- '<SYSTEM32>\schtasks.exe' /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Users\Public\Downloads\lsass.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Public\Downloads\lsass.exe'" /rl HIGHEST /f
- '<SYSTEM32>\chcp.com' 65001
- '<SYSTEM32>\schtasks.exe' /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Downloads\lsass.exe'" /f
- '<SYSTEM32>\schtasks.exe' /create /tn "taskhost" /sc ONLOGON /tr "'%ProgramFiles%\DVD Maker\Shared\DvdStyles\Vignette\taskhost.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "taskhostt" /sc MINUTE /mo 13 /tr "'%ProgramFiles%\DVD Maker\Shared\DvdStyles\Vignette\taskhost.exe'" /f
- '<SYSTEM32>\schtasks.exe' /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "dwm" /sc ONLOGON /tr "'%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'%WINDIR%\Installer\{90140000-0043-0000-1000-0000000FF1CE}\dwm.exe'" /f
- '%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\u5tkncof.cmdline"
- '<SYSTEM32>\schtasks.exe' /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'<Current directory>\sppsvc.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "sppsvc" /sc ONLOGON /tr "'<Current directory>\sppsvc.exe'" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'%ProgramFiles%\DVD Maker\Shared\DvdStyles\Vignette\taskhost.exe'" /rl HIGHEST /f
- '<SYSTEM32>\ping.exe' -n 10 localhost
- '%WINDIR%\microsoft.net\framework64\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\u5tkncof.cmdline"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /C "%TEMP%\z6ZMWD7HdR.bat"' (with hidden window)
