Welcome to the Virus Encyclopedia of Panda Security.
It spreads and affects other computers.
It affects the productivity of the computer, the network to which it’s connected or other remote sites.
It uses stealth techniques to avoid being detected by the user.
It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies.
It does not spread automatically using its own means.
|First detected on:||Sept. 4, 2008|
|Detection updated on:||Sept. 4, 2008|
Nuwar.ZO is a worm that spreads by copying itself, without infecting other files.
- In the local network:
it generates a large amount of network activity and consumes bandwidth.
- On remote sites: it launches denial of service attacks against Web servers or remote databases.
It uses stealth techniques to avoid being detected by the user:
- It terminates processes corresponding to several security tools, such as antivirus programs and firewalls, to prevent detection.
It uses several methods in order to avoid detection by antivirus companies:
- It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.
Nuwar.ZO 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.