Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\siszfc32.exe
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
- %WINDIR%\explorer.exe
Modifies file system
Creates the following files
- %TEMP%\~tm4cd7.tmp
- %TEMP%\~tm4da3.tmp
- %TEMP%\~tm4e11.tmp
- %APPDATA%\avdrn.dat
- %TEMP%\~tm15258.tmp
- %TEMP%\~tm4fb5.tmp
- %TEMP%\~tm5042.tmp
- %TEMP%\~tm50a1.tmp
Sets the 'hidden' attribute to the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\siszfc32.exe
Deletes the following files
- %TEMP%\~tm4cd7.tmp
- %TEMP%\~tm4da3.tmp
- %TEMP%\~tm4e11.tmp
- %TEMP%\~tm15258.tmp
- %TEMP%\~tm4fb5.tmp
- %TEMP%\~tm5042.tmp
- %TEMP%\~tm50a1.tmp
Moves itself
- from <Full path to file> to %TEMP%\~tm4f2b.tmp
Network activity
UDP
- DNS ASK wo####ostdns.com
Miscellaneous
Executes the following
- '%WINDIR%\syswow64\svchost.exe' -k netsvcs
