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Category: Malware

Type: Backdoor

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

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

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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.