Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MyPen' = '<Full path to virus>'
Creates the following files on removable media:
- <Drive name for removable media>:\Start.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:PenCat'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Executes the following:
- <SYSTEM32>\reg.exe ADD hkcu\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v ShowSuperHidden /t REG_DWORD /d 0 /f
- <SYSTEM32>\reg.exe ADD hkcu\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v SuperHidden /t REG_DWORD /d 0 /f
- <SYSTEM32>\attrib.exe +r +h +s E:\Start.exe
Modifies file system :
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Start.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
