Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /D'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /S'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /u'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /j'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /X'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /Y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /c'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /p'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /a'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /m'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /G'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /r'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /F'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /n'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /L'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /O'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /Q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kaolek' = '%HOMEPATH%\kaolek.exe /T'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\IeBS.ico
- <Drive name for removable media>:\kaolek.exe
- <Drive name for removable media>:\kaolekx.exe
- <Drive name for removable media>:\New Folder.lnk
- <Drive name for removable media>:\Passwords.lnk
- <Drive name for removable media>:\Documents.lnk
- <Drive name for removable media>:\Pictures.lnk
- <Drive name for removable media>:\Music.lnk
- <Drive name for removable media>:\Video.lnk
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Modifies file system:
Creates the following files:
- %HOMEPATH%\kaolek.exe
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\kaolek.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\IeBS.ico
- <Drive name for removable media>:\kaolek.exe
- <Drive name for removable media>:\kaolekx.exe
Network activity:
Connects to:
- 'ns#.##ayer1532.com':8000
UDP:
- DNS ASK ns#.##ayer1532.com
Miscellaneous:
Creates and executes the following:
- '%HOMEPATH%\kaolek.exe'