Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\instup.exe] 'debugger' = 'regedit /s'
Malicious functions:
Executes the following:
- '<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="19914958325575243" dir=out action=block program="%ProgramFiles%\AVAST Software\Avast\setup\instup.exe" enable=yes
- '<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="215059498198495603" dir=out action=block program="%ProgramFiles%\AVG\AVG2014\avgmfapx.exe" enable=yes
- '<SYSTEM32>\cmd.exe' /c netsh advfirewall firewall add rule name="19914958325575243" dir=out action=block program="%ProgramFiles%\AVAST Software\Avast\setup\instup.exe" enable=yes
- '<SYSTEM32>\cmd.exe' /c netsh advfirewall firewall add rule name="215059498198495603" dir=out action=block program="%ProgramFiles%\AVG\AVG2014\avgmfapx.exe" enable=yes
Modifies file system:
Creates the following files:
- <Current directory>\GaPrBfJXsdhE
- %TEMP%\aut1.tmp
Deletes the following files:
- <Current directory>\GaPrBfJXsdhE
- %TEMP%\aut1.tmp
Network activity:
Connects to:
- 'ra#####estacoes.com.br':80
TCP:
HTTP POST requests:
- http://ra#####estacoes.com.br/count/post.php
UDP:
- DNS ASK ra#####estacoes.com.br
