Haxdoor.AO is a rootkit. These are programs used to hide files, Windows Registry entries or processes, either their own or those of other programs.
In this way, even when a user looks for these items on a computer, they won't be able to see them.
Rootkits have been widely used for malicious ends, to camouflage other programs on computers that have previously been compromised through other means.
There are certain examples of malware that use rootkits in order to go unnoticed on the computer they have infected.
Haxdoor.AO prevents access from programs to websites of several companies related with security tools (antivirus programs, firewalls, etc.).
Haxdoor.AO redirects attempts to access web pages of certain banks to spoofed pages, with the aim of logging information entered by the user in these pages.
Haxdoor.AO redirects attempts to access several web pages to a specific IP address.
Haxdoor.AO uses the following propagation or distribution methods:
- Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
- Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.