Threat Description



Category: Malware
Type: Backdoor
Platform: W32
Aliases: Breplibot.AE


Breplibot.AE is a backdoor with bot capabilities. It connects to several IRC servers and waits for commands from the backdoor author.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

System installation

The backdoor's file is a PE executable about 30 kilobytes long, packed with UPX file compressor.When the backdoor's file is started, it copies itself as 'svcsvh32.exe' file to Windows System folder and then tries to create the following startup key values in the Registry:

  • [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
  • [HKLM\Software\Microsoft\Windows\CurrentVersion\Run] "WindowsDiskE" = "svcsvh32.exe"
Bot functionality

When the backdoor is active, it connects to an IRC server, and joins a certain channel then acts as a bot there.The following IRC servers and ports are used by the backdoor:


The backdoor joins the following password-protected IRC channel:

  • #info

A hacker can send commands to the bots to control infected computers. Several tasks can be performed, including the following:

  • - Download and execute files from remote servers
  • - Request system information
  • - Delete files

Breplibot.AE tries to terminate several security-related processes.


Detection Type: PC
Database: 2006-02-01_02


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