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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Subseven.21

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Subseven.21
Technical name:Bck Subseven.21
Threat level:Low
Type:Virus
Effects:  

It allows hackers to gain remote access to the affected computer

Affected platforms:

MS-DOS

Detection updated on:Nov. 20, 2001
StatisticsNo

Brief Description 

    

Subseven.21 is a backdoor type Trojan that allows hackers to gain remote access to the infected computer in order to carry out actions that can compromise the user’s confidentiality and impede the tasks performed on the computer.

The effects of Subseven.21 are the following: it opens or closes the CD-ROM tray, it moves the mouse pointer and opens chat servers.

This Trojan consists of two programs:

  • Server, which is installed in the attacked computer.
  • Client, which is installed in the attacker’s computer.

These programs are connected to one another through a port opened by the Trojan, which is TCP port 27374 by default.

Visible Symptoms 

    

An indication that Subseven.21 may have infected your computer is the mouse pointer moving for no apparent reason or the CD-ROM tray opening and closing without user intervention.