BKDR_NETBOT.BHHH

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be dropped by other malware.

It does not have any propagation routine.

It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.

It does not have any downloading capability.

It gathers certain information on the affected computer.

Arrival Details

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It may be dropped by other malware.

Autostart Technique

This backdoor adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Shell Folders
Startup = "%User Profile%\Start Menu\Programs\Startup"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
User Shell Folders\New
Startup = "%User Profile%\My Documents\Startup"

It enables its automatic execution at every system startup by dropping the following copies of itself into the Windows Common Startup folder:

• %User Profile%\My Documents\Startup\algsrv.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Propagation

This backdoor does not have any propagation routine.

Backdoor Routine

This backdoor executes the following commands from a remote malicious user:

• Perform remote shell
• Monitor mouse and keyboard events
• Uninstall itself
• Inject itself to specific process
• Terminate process
• Capture screenshot
• Get drive information
• File Manipulation (Create, Modify, Rename, Copy, Delete)
• Execute file

It connects to the following websites to send and receive information:

• {BLOCKED}.90.11:443

Download Routine

This backdoor does not have any downloading capability.

Information Theft

This backdoor gathers the following information on the affected computer:

• Computer Name
• OS Version
• RAM

NOTES:
This backdoor pings the following URL to get its IP address where it connects to send and receive information from malicious user:

• yd.{BLOCKED}bto.org:443

It does not have rootkit capabilities.

It does not exploit any vulnerability.