Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce] 'Explorer' = '%WINDIR%\resources\themes\explorer.exe RO'
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce] 'Svchost' = '%WINDIR%\resources\svchost.exe RO'
Creates or modifies the following files
- <SYSTEM32>\tasks\svchost
Sets the following service settings
- [<HKLM>\SYSTEM\CurrentControlSet\Services\Schedule] 'Start' = '00000002'
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Searches for windows to
detect analytical utilities:
- ClassName: 'OLLYDBG', WindowName: ''
- ClassName: 'GBDYLLO', WindowName: ''
- ClassName: 'pediy06', 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'
- ClassName: 'RegmonClass', WindowName: ''
- ClassName: '', WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
Modifies file system
Creates the following files
- %WINDIR%\resources\themes\explorer.exe
- %WINDIR%\resources\spoolsv.exe
- %WINDIR%\resources\svchost.exe
Sets the 'hidden' attribute to the following files
- %WINDIR%\resources\themes\explorer.exe
- %WINDIR%\resources\spoolsv.exe
- %WINDIR%\resources\svchost.exe
Miscellaneous
Searches for the following windows
- ClassName: '18467-41' WindowName: ''
- ClassName: 'Progman' WindowName: ''
Creates and executes the following
- '%WINDIR%\resources\themes\explorer.exe'
- '%WINDIR%\resources\spoolsv.exe' SE
- '%WINDIR%\resources\svchost.exe'
- '%WINDIR%\resources\spoolsv.exe' PR
- '%WINDIR%\resources\themes\explorer.exe' ' (with hidden window)
- '%WINDIR%\resources\spoolsv.exe' SE' (with hidden window)
- '%WINDIR%\resources\svchost.exe' ' (with hidden window)
- '%WINDIR%\resources\spoolsv.exe' PR' (with hidden window)
- '%WINDIR%\explorer.exe' ' (with hidden window)
- '%WINDIR%\syswow64\schtasks.exe' /create /tn "svchost" /tr "%WINDIR%\resources\svchost.exe" /sc daily /st 12:51 /f' (with hidden window)
- '%WINDIR%\syswow64\schtasks.exe' /create /tn "svchost" /tr "%WINDIR%\resources\svchost.exe" /sc daily /st 12:52 /f' (with hidden window)
Executes the following
- '%WINDIR%\explorer.exe'
- '%WINDIR%\syswow64\schtasks.exe' /create /tn "svchost" /tr "%WINDIR%\resources\svchost.exe" /sc daily /st 12:51 /f
- '%WINDIR%\syswow64\schtasks.exe' /create /tn "svchost" /tr "%WINDIR%\resources\svchost.exe" /sc daily /st 12:52 /f
