Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "<SYSTEM32>\rundll32.dll"'
- [<HKLM>\SOFTWARE\Classes\dllfile\shell\open\command] '' = '%1'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\regdrv.exe
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\rundll32.dll'
Modifies file system :
Creates the following files:
- <SYSTEM32>\rundll32.dll
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\regdrv.exe
- <SYSTEM32>\rundll32.dll
Deletes itself.
Network activity:
Connects to:
- 'ch#######ewversions.sytes.net':5
UDP:
- DNS ASK ch#######ewversions.sytes.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_WINHELP' WindowName: '(null)'
- ClassName: '(null)' WindowName: '464646'
- ClassName: 'TfrmServer' WindowName: 'aaaa1'
- ClassName: 'TApplication' WindowName: 'dddd1'
- ClassName: '(null)' WindowName: 'bv1'
- ClassName: '(null)' WindowName: 'bv2'
- ClassName: '(null)' WindowName: '494949'
- ClassName: '(null)' WindowName: 'bv3'
