Win32.HLLW.IRCBot.66

Added to the Dr.Web virus database: 2011-09-03

Virus description added: 2011-09-03

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = '%APPDATA%\ctfmon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = '%APPDATA%\ctfmon.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Windows Firewall' = '%APPDATA%\winlogon.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Windows Firewall' = '%APPDATA%\winlogon.exe'

Malicious functions:

To complicate detection of its presence in the operating system,

blocks the following features:

Creates and executes the following:

Injects code into

the following system processes:

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: