Technical Information
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\vsrun.exe' = '%TEMP%\vsrun.exe:*:Enabled:vsrun.exe'
Creates and executes the following:
- '%TEMP%\vsrun.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\vsrun.exe" "vsrun.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\vsrun.exe
Network activity:
Connects to:
- 'ra####.no-ip.biz':1777
UDP:
- DNS ASK ra####.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
