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Backdoor:Win32/Bifrose


Backdoor:Win32/Bifrose is a backdoor trojan that connects to a remote IP address using either TCP port 81 or a random port. It allows an attacker to access the computer and perform various actions.


What to do now

To detect and remove this threat and other malicious software that may be installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following:
 
 
For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.

Threat behavior

Backdoor:Win32/Bifrose is a backdoor trojan that connects to a remote IP address using either TCP port 81 or a random port. It allows an attacker to access the computer.
 
The Bifrose trojan family is highly configurable. Thus, the locations of their installed files on an infected computer and the TCP ports they use to connect may vary. They allow an attacker to perform any of the following actions on the affected machine:
 
  • Manage running processes
  • Manipulate files or registry data
  • Obtain installed program details
  • Log keystrokes
  • Screen capturing
  • System shutdown or reboot
  • Command shell
 
Analysis by Francis Allan Tan Seng

Symptoms

There are no common symptoms associated with this threat. Alert notifications from installed antivirus software may be the only symptom(s).

Prevention


Alert level: Severe
First detected by definition: 1.45.287.0
Latest detected by definition: 1.189.271.0 and higher
First detected on: Oct 07, 2008
This entry was first published on: Oct 02, 2008
This entry was updated on: Apr 17, 2011

This threat is also detected as:
  • Backdoor.Win32.Bifrose.phc (Kaspersky)
  • Troj/Bifrose-UV (Sophos)
  • Backdoor.Bifrose.ZTO (BitDefender)
  • BackDoor-CEP (McAfee)
  • Backdoor.Bifrose (Symantec)