Technical Information
To ensure autorun and distribution
Sets the following service settings
- [HKLM\SYSTEM\CurrentControlSet\Services\977A73DD] 'ImagePath' = '<DRIVERS>\977A73DD.sys'
Creates the following services
- '977A73DD' <DRIVERS>\977A73DD.sys
Malicious functions
Intercepts control using hardware breakpoints
in NTDLL dll
- 39c438bf89.exe process, ntdll.dll module
Modifies file system
Creates the following files
- <Current directory>\39c438bf89.exe
- %TEMP%\deadstar\secureenginesdk64.dll
- %TEMP%\deadstar\vehhandler.dll
- <DRIVERS>\977a73dd.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
Searches for the following windows
- ClassName: '' WindowName: 'Rust'
Creates and executes the following
- '<Current directory>\39c438bf89.exe' --deadstar-morphed
Executes the following
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -NonInteractive -WindowStyle Hidden -Command "Wait-Process -Id 2128 -ErrorAction SilentlyContinue; Remove-Item -LiteralPath '<Full path to file>' -Force"
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -NonInteractive -WindowStyle Hidden -Command "Wait-Process -Id 2128 -ErrorAction SilentlyContinue; Remove-Item -LiteralPath '<Full path to file>' -Force"' (with hidden window)
