Welcome to the Virus Encyclopedia of Panda Security.
It downloads an adware application from the Internet.
Krepper.A is a Trojan that downloads and runs the adware detected by Panda Security as Adware/DNSErr.A.
Krepper.A does not spread automatically using its own means. It needs the attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, e-mail messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.
Krepper.A is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.
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