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You have been re-routed to the Backdoor:Win32/Lybsus.A write up because Backdoor%3aWin32%2fLybsus.A has been renamed to Backdoor:Win32/Lybsus.A
 

Backdoor:Win32/Lybsus.A


Backdoor:Win32/Lybsus.A is a trojan that allows unauthorized access and control of an affected computer.


What to do now

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

Threat behavior

Backdoor:Win32/Lybsus.A is a trojan that allows unauthorized access and control of an affected computer.
Installation
Backdoor:Win32/Lybsus.A creates the following files on an affected computer:

  • c:\documents and settings\all users\application data\temp:e0ec633e
Payload
Allows backdoor access and control
Backdoor:Win32/Lybsus.A allows unauthorized access and control of an affected computer. An attacker can perform any number of different actions on an affected computer using Backdoor:Win32/Lybsus.A. This could include, but is not limited to, the following actions:

  • Download and execute arbitrary files
  • Upload files
  • Spread to other computers using various methods of propagation
  • Log keystrokes or steal sensitive data
  • Modify system settings
  • Run or terminate applications
  • Delete files

This malware description was produced and published using our automated analysis system's examination of file SHA1 f6882b295b97d7916b9e0e7eea90f71e24d825de.

Symptoms

System changes
The following system changes may indicate the presence of this malware:

  • The presence of the following files:

  • c:\documents and settings\all users\application data\temp:e0ec633e


Prevention


Alert level: Severe
First detected by definition: 1.125.1048.0
Latest detected by definition: 1.189.1499.0 and higher
First detected on: May 03, 2012
This entry was first published on: May 23, 2012
This entry was updated on: Jun 01, 2012

This threat is also detected as:
No known aliases