Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '979837944f997ec14a652adddf3b5729' = '"%TEMP%\Yahoo! Messenger.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '979837944f997ec14a652adddf3b5729' = '"%TEMP%\Yahoo! Messenger.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\Yahoo! Messenger.exe' = '%TEMP%\Yahoo! Messenger.exe:*:Enabled:Yahoo! Messenger.exe'
Creates and executes the following:
- '%TEMP%\Yahoo! Messenger.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\Yahoo! Messenger.exe" "Yahoo! Messenger.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\Yahoo! Messenger.exe
Network activity:
Connects to:
- 'ir#####omlx.no-ip.org':1177
UDP:
- DNS ASK ir#####omlx.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
