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F-Secure Virus Descriptions : RBot

[Summary] | [Disinfection] | [Detection]



NAME:RBot
ALIAS:Backdoor.Rbot.gen, Backdoor.Win32.Rbot.gen
ALIAS:Backdoor.RBot, Backdoor.Win32.RBot, W32/RBot-A

Summary

RBot represents the large family of backdoors - hacker's remote access tools. These tools allow to contol victims' computers remotely by sending specific commands via IRC channels. Also these backdoors can steal data, spread to local network and to computers vulnerable to exploits.

Disinfection

F-Secure provides the special disinfection utility to eliminate RBot backdoor infection. You can download this utility from our ftp site:

http://www.f-secure.com/tools/f-bot.zip

ftp://ftp.f-secure.com/anti-virus/tools/f-bot.zip

The unpacked version is available here:

http://www.f-secure.com/tools/f-bot.exe

ftp://ftp.f-secure.com/anti-virus/tools/f-bot.exe

Disinfection instructions can be found here:

http://www.f-secure.com/tools/f-bot.txt

ftp://ftp.f-secure.com/anti-virus/tools/f-bot.txt

F-Secure Anti-Virus starting from version 5.40 can disinfect a computer infected with RBot automatically by renaming the backdoor's file. A computer has to be restarted to complete disinfection.

Manual disinfection for RBot backdoor requires renaming of an infected file, usually located in Windows or Windows System folder and restarting a system. Please note that the backdoor's file may have read-only, system and hidden attributes, so Windows Explorer has to be configured to show such files.

If the infection is in a local network, please follow the instructions on this webpage:

http://www.f-secure.com/v-descs/netdisinf.shtml

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Detection

F-Secure Anti-Virus detects many RBot backdoor variants generically as 'Backdoor.RBot.gen'. Some of them are detected exactly. At the moment of the creation of this description FSAV detected Backdoor.RBot.A - Backdoor.RBot.BM variants exactly.

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Writeup: Alexey Podrezov, September 2nd-4th, 2004;

Description Updated: Alexey Podrezov, October 21st, 2004;

F-Secure Corporation