Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '338642f263505b59b1bda8198169cd29' = '"%HOMEPATH%\taskhost.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '338642f263505b59b1bda8198169cd29' = '"%HOMEPATH%\taskhost.exe" ..'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\338642f263505b59b1bda8198169cd29.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\taskhost.exe' = '%HOMEPATH%\taskhost.exe:*:Enabled:taskhost...
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\taskhost.exe" "taskhost.exe" ENABLE
- '%HOMEPATH%\taskhost.exe'
Modifies file system:
Creates the following files:
- %HOMEPATH%\taskhost.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\338642f263505b59b1bda8198169cd29.exe
Network activity:
Connects to:
- '8b#####olha.ddns.net':2000
UDP:
- DNS ASK 8b#####olha.ddns.net
