Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Allya' = 'regsvr32.exe /s %APPDATA%\Lisuuw\puytkee.dll'
Malicious functions
Executes the following (exploit)
- '<SYSTEM32>\rundll32.exe' VNlBtdM.dll,DllRegisterServer
Injects code into
the following system processes:
- %WINDIR%\syswow64\msiexec.exe
Modifies file system
Creates the following files
- C:\msdownld.tmp\as10fc34.tmp\dws.dll
- %HOMEPATH%\documents\vnlbtdm.dll
- %APPDATA%\lisuuw\puytkee.dll
Deletes the following files
- C:\msdownld.tmp\as10fc34.tmp\dws.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 og###dedibl.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' VNlBtdM.dll,DllRegisterServer' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\msiexec.exe'
