Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /N'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /D'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /Y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /s'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /Z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /h'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /V'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /M'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /L'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /o'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /Q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /U'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'biarai' = '%HOMEPATH%\biarai.exe /I'
Creates the following files on removable media:
- <Drive name for removable media>:\Passwords.exe
- <Drive name for removable media>:\RCX3.tmp
- <Drive name for removable media>:\RCX2.tmp
- <Drive name for removable media>:\RCX6.tmp
- <Drive name for removable media>:\RCX5.tmp
- <Drive name for removable media>:\RCX4.tmp
- <Drive name for removable media>:\Secret.exe
- <Drive name for removable media>:\biarai.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Porn.exe
- <Drive name for removable media>:\RCX1.tmp
- <Drive name for removable media>:\Sexy.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- %HOMEPATH%\biarai.exe
Modifies file system :
Creates the following files:
- %HOMEPATH%\biarai.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\biarai.exe
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\biarai.exe
Deletes the following files:
- <Drive name for removable media>:\Passwords.exe
- <Drive name for removable media>:\Porn.exe
- <Drive name for removable media>:\Sexy.exe
Network activity:
Connects to:
- 'ns#.##ayer1532.com':8001
UDP:
- DNS ASK ns#.##ayer1532.com
- '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
