Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'GRISOFT2' = '<SYSTEM32>\test.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'GRISOFT1' = '<SYSTEM32>\data.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'GRISOFT' = '%WINDIR%\data.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\1763.EXE
- <Drive name for removable media>:\AUTORUN.INF
Malicious functions:
Creates and executes the following:
- <SYSTEM32>\test.exe
- <SYSTEM32>\data.exe
- %WINDIR%\data.exe
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Modifies file system :
Creates the following files:
- C:\AUTORUN.INF
- C:\1763.EXE
- <SYSTEM32>\test.exe
- %WINDIR%\data.exe
- <SYSTEM32>\data.exe
Sets the 'hidden' attribute to the following files:
- C:\1763.EXE
- <Drive name for removable media>:\AUTORUN.INF
- <Drive name for removable media>:\1763.EXE
- C:\AUTORUN.INF
- %WINDIR%\data.exe
- <SYSTEM32>\data.exe
- <SYSTEM32>\test.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
