Virus Database

Pcflu.2156

Description Pcflu.2156

This is a not dangerous memory resident parasitic polymorphic virus. It hooks INT 21h, 27h and writes itself to the end of EXE files and to the beginnings of COM files, some "Pcflu" infects only EXE files. While executing it checks the system and sometimes displays the message:
Incorrect DOS version
Then it returns to DOS.
The virus contains the text string:
PC-FLU Mk II by Wizard 1991
Some of the viruses from this family hooks INT 8 (timer) and 9 (keyboard) sometimes. Then they periodically 'skip' the keys that are entered.

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Backdoor.Farnaz

Description Backdoor.Farnaz

This program is a hidden telnet server. It stays in the system as a hidden application and listens to socket 133 using TCP/IP protocol. By using that, a hacker may connect to a victim computer and get access to disk files and system resources.

Backdoor.FTP.Casus.15

Description Backdoor.FTP.Casus.15

The program poses as an FTP-server and informs its host, via ICQ or e-mail, of the presence of networks.
Upon execution of the virus code, "Casus" registers itself in the system registry so that it will automatically run when the infected system is rebooted. Via e-mail and ICQ, Casus sends notifications to its host (hacker receiving the network notifications) and begins to listen, clandestinely, over the TCP/IP protocol on port 21. Having received the notices, informing him of located networks, the virus host with the help of any FTP-client gains access to file systems on victim computers.

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