BKDR_GENOME.CI

This backdoor may connect to a certain website to inform a remote user of its installation and to send information such as IP address, user name, and OS information.

This backdoor 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 executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

It does not have any downloading capability.

Arrival Details

This backdoor may be dropped by the following malware:

• TROJ_SHELLCOD.CI
• TROJ_MDROPPR.XL

Installation

This backdoor drops the following files:

• %System%\com32.dll - also detected as BKDR_GENOME.CI

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Autostart Technique

This backdoor registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\COMSysHlp
ImagePath = "%SystemRoot%\system32\svchost.exe -k COMSysHlp"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\COMSysHlp\Parameters
ServiceDll = "%SystemRoot%\system32\com32.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\SvcHost
COMSysHlp = "COMSysHlp"

Propagation

This backdoor does not have any propagation routine.

Backdoor Routine

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

• Create/delete file
• Execute command shell
• Execute process
• Get drive information
• List files
• Restart system
• Send IP address, user name, and OS information
• Shut down system

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

• modify.{BLOCKED}a.net

Dropping Routine

This backdoor executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

Download Routine

This backdoor does not have any downloading capability.

NOTES:

This backdoor may also connect to modify.{BLOCKED}a.net using Port 6542 to inform a remote user of its installation and to send information such as IP address, user name, and OS information (OS Version, Product Type, Build Number).

It does not have rootkit capabilities.

It does not exploit any vulnerability.