F-Secure
Tools
Breplibot.AE
Summary
Breplibot.AE is a backdoor with bot capabilities. It connects to several IRC servers and waits for commands from the backdoor author.Additional 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:
Payload
Breplibot.AE tries to terminate several security-related processes.
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:
- 152.7.4.74:8080
- 161.6.23.28:8080
- 170.140.216.236:8080
- 170.140.240.82:8080
- 128.119.60.144:8080
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
Payload
Breplibot.AE tries to terminate several security-related processes.
Detection
F-Secure Anti-Virus detects this malware with the following updates:
[FSAV_Database_Version]
Version = 2006-02-01_02.