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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Net.A

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Net.A
Technical name:HackTool/Net.A
Threat level:Low
Type:Hacking Tool
Subtype: Nuker
Effects:  It sends a large amount of information packets, sends a large number of service request packets and recruits remote computers in order to launch denial of service attacks.
Affected platforms:

Windows XP/2000/NT/ME/98/95

First detected on:May 16, 2004
Detection updated on:May 16, 2004
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Net.A is a hacking tool. Although these tools are not viruses, they are considered as dangerous for the victims of attacks. Net.A has the following functions:

  • Nuker: It sends information packets to remote computers. If too much data is received in a short period of time, the affected computer can block, restart, etc. If the affected computer is a server, then it results in a denial of service. In addition, a nuker can damage the Windows Registry, the file system or key files needed for the correct functioning of the computer.
  • Flooder: It sends multiple information packets in order to block the target computer. A flooder is normally used to attack IRC channels or standalone computers. It can also result in a denial of service (DoS) if the attacked computer is a server.
  • DoS: DoS attacks are launched by sending a large number of service re-quest packets from one computer to a specific server. This server is un-able to answer to all the requests and is flooded, preventing legitimate users from accessing its services.
  • DDoS: DDoS attacks occur when hackers recruit several remote com-puters by exploiting a certain vulnerability, and they then use these computers to launch a Denial of service (DoS) attack to a specific server.

 

Net.A does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.