Technical Information
To ensure autorun and distribution
Sets the following service settings
- [HKLM\SYSTEM\CurrentControlSet\Services\F42539A2] 'ImagePath' = '<DRIVERS>\F42539A2.sys'
Creates the following services
- 'F42539A2' <DRIVERS>\F42539A2.sys
Malicious functions
Intercepts control using hardware breakpoints
in NTDLL dll
- d252c38caf.exe process, ntdll.dll module
Modifies file system
Creates the following files
- <Current directory>\d252c38caf.exe
- <Current directory>\logs\overlay.log
- %TEMP%\deadstar\secureenginesdk64.dll
- %TEMP%\deadstar\vehhandler.dll
- <DRIVERS>\f42539a2.sys
Sets the 'hidden' attribute to the following files
- %TEMP%\deadstar\vehhandler.dll
Deletes following files that it created itself
- %TEMP%\deadstar\secureenginesdk64.dll
- %TEMP%\deadstar\vehhandler.dll
Deletes itself.
Miscellaneous
Creates and executes the following
- '<Current directory>\d252c38caf.exe' --deadstar-morphed
Executes the following
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -NonInteractive -WindowStyle Hidden -Command "Wait-Process -Id 2680 -ErrorAction SilentlyContinue; Remove-Item -LiteralPath '<Full path to file>' -Force"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -NonInteractive -WindowStyle Hidden -Command "Wait-Process -Id 2680 -ErrorAction SilentlyContinue; Remove-Item -LiteralPath '<Full path to file>' -Force"' (with hidden window)
