Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /a'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /Q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /F'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /s'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /V'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /U'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /j'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /N'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /X'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /L'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /C'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /M'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /w'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /Z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /E'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /d'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /o'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuelao' = '%HOMEPATH%\nuelao.exe /R'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\xIKQ.ico
- <Drive name for removable media>:\nuelao.exe
- <Drive name for removable media>:\nuelaox.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%\nuelao.exe
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\nuelao.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\xIKQ.ico
- <Drive name for removable media>:\nuelao.exe
- <Drive name for removable media>:\nuelaox.exe
Network activity:
Connects to:
- 'ns#.##ayer1532.com':8000
UDP:
- DNS ASK ns#.##ayer1532.com
Miscellaneous:
Creates and executes the following:
- '%HOMEPATH%\nuelao.exe'