Trojan.Spyeye

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Discovered: February 02, 2010
Updated: February 03, 2010 3:27:14 PM
Also Known As: BackDoor-Spyeye [McAfee], Troj/Agent-NEU [Sophos], Troj/Spyeye-B [Sophos], Troj/Agent-NPP [Sophos], Troj/Spyeye-H [Sophos]
Infection Length: 70,144 bytes
Systems Affected: Windows

Trojan.Spyeye is a Trojan horse that may steal information from the compromised computer.

Antivirus Protection Dates

  • Initial Rapid Release version February 02, 2010 revision 023
  • Latest Rapid Release version April 20, 2018 revision 019
  • Initial Daily Certified version February 02, 2010 revision 035
  • Latest Daily Certified version April 21, 2018 revision 001
  • Initial Weekly Certified release date February 03, 2010

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Mario Ballano Barcena

Discovered: February 02, 2010
Updated: February 03, 2010 3:27:14 PM
Also Known As: BackDoor-Spyeye [McAfee], Troj/Agent-NEU [Sophos], Troj/Spyeye-B [Sophos], Troj/Agent-NPP [Sophos], Troj/Spyeye-H [Sophos]
Infection Length: 70,144 bytes
Systems Affected: Windows

This threat must be manually installed on the computer. It may also be distributed by other means, such as Web Exploit Toolkits.

When the Trojan is executed, it drops the following configuration file, which is a password-protected ZIP archive:
%SystemDrive%\cleansweep.exe\config.bin

It also drops the following file, which contains a hard-coded password to decrypt the above configuration file:
%SystemDrive%\cleansweep.exe\cleansweep.exe

Next, the Trojan creates the following registry entry so that it executes whenever Windows starts:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"cleansweep.exe" = "%SystemDrive%\cleansweep.exe\cleansweep.exe"

The Trojan then injects code into any currently running system processes so that it can then perform the following functions:

  • Capture network traffic
  • Send and receive network packets in order to bypass application firewalls


It also provides certain rootkit capabilities, for example it can:
  • Hide its own process on injected processes
  • Hide and prevent access to its own binary code
  • Hide and prevent access to its startup registry entry


The Trojan then steals information from the following Internet browsers:
  • Firefox
  • Internet Explorer
  • Maxthon


It sends the stolen information back to a control server, which is specified in the configuration file.

A remote attacker may also perform the following actions from the control server:
  • Download and execute files
  • Log and report keystrokes
  • Perform certain hidden tasks on the Trojan

Writeup By: Mario Ballano Barcena

Discovered: February 02, 2010
Updated: February 03, 2010 3:27:14 PM
Also Known As: BackDoor-Spyeye [McAfee], Troj/Agent-NEU [Sophos], Troj/Spyeye-B [Sophos], Troj/Agent-NPP [Sophos], Troj/Spyeye-H [Sophos]
Infection Length: 70,144 bytes
Systems Affected: Windows

You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your computer has been affected by this risk.

Before proceeding further we recommend that you run a full system scan . If that does not resolve the problem you can try one of the options available below.



FOR NORTON USERS
If you are a Norton product user, we recommend you try the following resources to remove this risk.

Removal Tool


If you have an infected Windows system file, you may need to replace them using from the Windows installation CD .


How to reduce the risk of infection
The following resources provide further information and best practices to help reduce the risk of infection.


FOR BUSINESS USERS
If you are a Symantec business product user, we recommend you try the following resources to remove this risk.

Identifying and submitting suspect files
Submitting suspicious files to Symantec allows us to ensure that our protection capabilities keep up with the ever-changing threat landscape. Submitted files are analyzed by Symantec Security Response and, where necessary, updated definitions are immediately distributed through LiveUpdate™ to all Symantec end points. This ensures that other computers nearby are protected from attack. The following resources may help in identifying suspicious files for submission to Symantec.


Removal Tool

If you have an infected Windows system file, you may need to replace them using from the Windows installation CD .


How to reduce the risk of infection
The following resource provides further information and best practices to help reduce the risk of infection.
Protecting your business network



MANUAL REMOVAL
The following instructions pertain to all current Symantec antivirus products.

1. Performing a full system scan
How to run a full system scan using your Symantec product


2. Restoring settings in the registry
Many risks make modifications to the registry, which could impact the functionality or performance of the compromised computer. While many of these modifications can be restored through various Windows components, it may be necessary to edit the registry. See in the Technical Details of this writeup for information about which registry keys were created or modified. Delete registry subkeys and entries created by the risk and return all modified registry entries to their previous values.

Writeup By: Mario Ballano Barcena