Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = '<SYSTEM32>\System32\csrss.exe'
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = '<SYSTEM32>\System32\csrss.exe'
- [HKLM\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}] 'StubPath' = '<SYSTEM32>\System32\csrss.exe restart'
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
- %APPDATA%\microsoft\windows\qq540my.cfg
- %WINDIR%\syswow64\system32\csrss.exe
- %APPDATA%\microsoft\windows\qq540my.dat
Sets the 'hidden' attribute to the following files
- %APPDATA%\microsoft\windows\qq540my.cfg
- %WINDIR%\syswow64\system32\csrss.exe
- %APPDATA%\microsoft\windows\qq540my.dat
Network activity
UDP
- DNS ASK dy####c.no-ip.biz
Miscellaneous
Restarts the analyzed sample
Executes the following
- '%WINDIR%\syswow64\svchost.exe'
- '%ProgramFiles(x86)%\opera\launcher.exe'
