TROJ_AGENT.BFNQ

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

It does not have any propagation routine.

It does not have any backdoor routine.

As of this writing, the said sites are inaccessible.

It does not have any information-stealing capability.

It deletes the initially executed copy of itself.

Arrival Details

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

Installation

This Trojan drops the following copies of itself into the affected system:

• %Application Data%\AudioCard\vAudioCard.exe

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

It creates the following folders:

• %Application Data%\AudioCard

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

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}nzo.pw/1370452770_0.71825600.exe

As of this writing, the said sites are inaccessible.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan deletes the initially executed copy of itself

NOTES:

This Trojan does not have rootkit capabilities and does not exploit any vulnerability.

It adds the following registry key and entries if the affected system is running on Windows 7:

HKEY_LOCAL_MACHINE\Software\Microsoft\{malware file name}_RASAPI32

HKEY_LOCAL_MACHINE\Software\Microsoft\{malware file name}_RASMANCS

HKEY_LOCAL_MACHINE\Software\Microsoft\{malware file name}_RASAPI32
EnableFileTracing = "0"
EnableConsoleTracing = "0"
FileTracingMask = "4294901760"
ConsoleTracingMask = "4294901760"
MaxFileSize = "1048576"
FileDirectory = "%Windows%\tracing"

HKEY_LOCAL_MACHINE\Software\Microsoft\{malware file name}_RASMANCS
EnableFileTracing = "0"
EnableConsoleTracing = "0"
FileTracingMask = "4294901760"
ConsoleTracingMask = "4294901760"
MaxFileSize = "1048576"
FileDirectory = "%Windows%\tracing"