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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Oko

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Oko
Technical name:Bck/Oko
Threat level:Low
Alias:Backdoor.kokodoor.20.b
Type:Trojan
Effects:  It sends information from the victim computer to an e-mail address controlled by a hacker.
Affected platforms:

MS-DOS

First detected on:Jan. 5, 2003
Detection updated on:Feb. 23, 2005
StatisticsNo

Brief Description 

    

Oko is a backdoor type Trojan that goes memory resident. Its main aim is to send information about the compromised computer to the creator of the virus. In order to send this information, the virus tries to get the e-mail address of the Messenger program that the user has installed on the computer.

It is easy to be infected by Oko as it reaches computers through many different means: e-mail messages with infected attachments, computer networks, CD-ROMs, Internet downloads, FTP, floppy disks, etc.

Visible Symptoms 

    

Oko is difficult to identify, as it does not display any messages or warnings that indicate that it has infected a computer