Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Tayvihwu' = 'regsvr32.exe /s %APPDATA%\Peuzgy\udfudu.dll'
Malicious functions
Executes the following (exploit)
- '<SYSTEM32>\rundll32.exe' HZLPoPa.dll,DllRegisterServer
Injects code into
the following system processes:
- %WINDIR%\syswow64\msiexec.exe
Modifies file system
Creates the following files
- C:\msdownld.tmp\as10eafe.tmp\tsk.dll
- %HOMEPATH%\documents\hzlpopa.dll
- %APPDATA%\peuzgy\udfudu.dll
Deletes the following files
- C:\msdownld.tmp\as10eafe.tmp\tsk.dll
Network activity
Connects to
- 'mi###anttra.at':443
TCP
HTTP GET requests
- http://oc##.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D
UDP
- DNS ASK de###rena.at
- DNS ASK oc##.thawte.com
- DNS ASK mi###anttra.at
Miscellaneous
Searches for the following windows
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
Creates and executes the following
- '<SYSTEM32>\rundll32.exe' HZLPoPa.dll,DllRegisterServer' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\msiexec.exe'
