Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKLM\software\Wow6432Node\microsoft\windows\currentversion\Policies\Explorer\Run] '744529641' = '%ProgramFiles%\mssgsz.exe'
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks execution of the following system utilities:
- Windows Firewall
- Windows Update
- Windows Security Center
- Windows Defender
blocks the following features:
- User Account Control (UAC)
Injects code into
the following system processes:
- %WINDIR%\syswow64\msiexec.exe
the following user processes:
- iexplore.exe
Modifies file system
Sets the 'hidden' attribute to the following files
- %ProgramFiles%\mssgsz.exe
Moves itself
- from <Full path to file> to %ProgramFiles%\mssgsz.exe
Network activity
Connects to
- 'update.microsoft.com':80
UDP
- DNS ASK update.microsoft.com
- DNS ASK pl##oy.ru
- DNS ASK pl##oy1.ru
- DNS ASK pl##oy17.ru
- DNS ASK pl###y170.ru
- DNS ASK pl###y1700.ru
- 'localhost':56233
- 'localhost':56520
Miscellaneous
Restarts the analyzed sample
Executes the following
- '%WINDIR%\syswow64\msiexec.exe'
