Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'orvcim' = 'rundll32.exe "%APPDATA%\orvcim.dll",HrUtreamToByte'
Malicious functions:
Executes the following:
- '<SYSTEM32>\rundll32.exe' "%APPDATA%\orvcim.dll",HrUtreamToByte
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\fid=BwCeAAEA9doCAAEFCBcAAAAAAAAAAAAAAAAAAABjDQUMCwAAAGb7noXiEaO8rLh1giZvmW-wS5JRAABVVVVVVVVVVVVVVVVVVVVVQz7OATxUw5b12gIAVlRRXF5TQlh_Z3d0a2d4anoGAQK-kSInYZ[1]
- %APPDATA%\sircpa.dll
- %APPDATA%\orvcim.dll
Deletes itself.
Network activity:
Connects to:
- '11#####.##n99.netfilesupload.com':80
TCP:
HTTP GET requests:
- 11#####.##n99.netfilesupload.com/upload/fid=BwCeAAEA9doCAAEFCBcAAAAAAAAAAAAAAAAAAABjDQUMCwAAAGb7noXiEaO8rLh1giZvmW-wS5JRAABVVVVVVVVVVVVVVVVVVVVVQz7OATxUw5b12gIAVlRRXF5TQlh_Z3d0a2d4anoGAQK-kSInYZO9YAAAAAAAAQcAAAAHAAAANFYA
UDP:
- DNS ASK 11#####.##n99.netfilesupload.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: ''
