Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'teiyiud' = '%HOMEPATH%\teiyiud.exe /U'
- [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\1051174000] 'Name' = '"%TEMP%\3.tmp"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Sxikihuvuw' = 'rundll32.exe "%WINDIR%\up40usdr.dll",Startup'
Creates the following files on removable media:
- <Drive name for removable media>:\teiyiud.exe
- <Drive name for removable media>:\XEw.ico
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- %HOMEPATH%\vob32.exe
- %HOMEPATH%\teiyiud.exe
- %HOMEPATH%\jestle.exe
- %HOMEPATH%\h564XWZdO8.exe
- %HOMEPATH%\iestle.exe
Executes the following:
- <SYSTEM32>\rundll32.exe "%WINDIR%\up40usdr.dll",iep
- <SYSTEM32>\tasklist.exe
- <SYSTEM32>\rundll32.exe "%WINDIR%\up40usdr.dll",Startup
Injects code into
the following system processes:
- <SYSTEM32>\spoolsv.exe
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
Hides the following processes:
- <SYSTEM32>\rundll32.exe
Modifies file system :
Creates the following files:
- %HOMEPATH%\teiyiud.exe
- %WINDIR%\up40usdr.dll
- %WINDIR%\Temp\4.tmp
- %TEMP%\2.tmp
- %HOMEPATH%\vob32.dll
- %HOMEPATH%\iestle.exe
- %HOMEPATH%\h564XWZdO8.exe
- %HOMEPATH%\vob32.exe
- %HOMEPATH%\jestle.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\XEw.ico
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\teiyiud.exe
Deletes the following files:
- %WINDIR%\Temp\4.tmp
- <DRIVERS>\etc\hosts
- %TEMP%\3.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
