Welcome to the Virus Encyclopedia of Panda Security.
It spreads and affects other computers.
It causes the slowdown of the system, preventing planned tasks from being carried out.
It changes system permissions.
by exploiting vulnerabilities, across the Internet, via email, by infecting files that are then distributed.
|First detected on:||May 1, 2005|
|Detection updated on:||March 20, 2006|
Nimda.C is a worm that spreads by copying itself, without infecting other files.
It affects productivity, preventing tasks from being carried out:
- In the affected computer:
causes system slowdowns.
It reduces the security level of the computer:
it changes system permissions, decreasing the security level.
Nimda.C 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.
- Email: sending emails that include a copy of itself as an attachment. The computer is infected when the attachment is run.
- File infection: it infects different types of files, which are then distributed through any of the usual means: floppy disks, email messages with attachments, Internet download, files transferred via FTP, IRC channels, P2P file sharing networks, etc.