Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKLM\software\Wow6432Node\microsoft\windows\currentversion\Policies\Explorer\Run] '3703813175' = '%ProgramFiles%\mswyekd.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
Creates the following files
- %TEMP%\sublapsarianism\occupiers.myv
- %TEMP%\nse8ae1.tmp\occupiers.dll
Sets the 'hidden' attribute to the following files
- %ProgramFiles%\mswyekd.exe
Deletes the following files
- %TEMP%\nse8ae1.tmp\occupiers.dll
Moves itself
- from <Full path to file> to %ProgramFiles%\mswyekd.exe
Network activity
Connects to
- 'microsoft.com':80
TCP
Other
- '34.##9.100.209':443
UDP
- DNS ASK update.microsoft.com
- DNS ASK microsoft.com
- 'localhost':52056
- 'localhost':57626
Miscellaneous
Restarts the analyzed sample
Executes the following
- '%WINDIR%\syswow64\msiexec.exe'
