Trojan:WinNT/Sirefef.N

Trojan:WinNT/Sirefef.N is a Trojan with rootkit functionalities that prevents target computer users from normal web browsing by replacing search results with suspicious links and using click fraud to benefit from web users. Trojan:WinNT/Sirefef.N downloads updates and additional components and covers existing components on the targeted PC. Trojan:WinNT/Sirefef.N uses advanced surreptitious techniques in an effort to avoid detection and elimination from the attacked PC. Trojan:WinNT/Sirefef.N uses specific ports for its peer-to-peer communications.