Welcome to the Virus Encyclopedia of Panda Security.
It allows to carry out dangerous actions for the victims of attacks.
|First detected on:||Feb. 3, 2007|
|Detection updated on:||June 7, 2007|
|Yes, using TruPrevent Technologies
Nurech.A.worm 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.
Nurech.A.worm 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.
- Peer-to-peer (P2P) file sharing programs: it makes copies of itself with enticing names in shared folders belonging to these programs. Other users of this type of networks then voluntarily download and run the infected files.
- It is dropped or downloaded to the computer by other malware specimens, for example: Nurech.A, Nurech.B, Nurech.C, Nurech.D.