Parent class: TrojWare

Trojans are malicious programs that perform actions which are not authorized by the user: they delete, block, modify or copy data, and they disrupt the performance of computers or computer networks. Unlike viruses and worms, the threats that fall into this category are unable to make copies of themselves or self-replicate. Trojans are classified according to the type of action they perform on an infected computer.

Class: Trojan-Spy

Trojan-Spy programs are used to spy on a user’s actions (to track data entered by keyboard, make screen shots, retrieve a list of running applications, etc.) The harvested information is then transmitted to the malicious user controlling the Trojan. Email, FTP, the web (including data in a request) and other methods can be used to transmit the data.

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Platform: Linux

Linux is a family of UNIX-influenced operating systems based on the Linux kernel and GNU tools.


Technical Details

This Trojan is a standard Berkley ftp client compiled on Mandrake Linux 9.1, with a twist: it logs all hosts, usernames and passwords used to connect to ftp sites to a file named /tmp/.tmp, in the following format:

Host: %ftp name%
Login: %login%
Pass: %password%

Different connection logins are appended to /tmp/.tmp, and the file /tmp/.tmp will contain all the ftp logins the hacked user makes.

The hacker may later harvest this data and gain access to all ftp servers/sites the infected client connected to.

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