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TrojanDownloader:Win32/Beebone.LJ


First posted on 04 December 2013.
Source: Microsoft

Aliases :

There are no other names known for TrojanDownloader:Win32/Beebone.LJ.

Explanation :

Threat behavior TrojanDownloader:Win32/Beebone.LJ is a trojan that silently downloads and installs other programs without consent. This could include the installation of additional malware or malware components to an affected computer.

Installation

TrojanDownloader:Win32/Beebone.LJ copies itself to the following locations:

  • c:\documents and settings\administrator\passwords.exe
  • c:\documents and settings\administrator\porn.exe
  • c:\documents and settings\administrator\secret.exe
  • c:\documents and settings\administrator\sexy.exe
  • c:\documents and settings\administrator\tuejef.exe
  • c:\documents and settings\administrator\c\passwords.exe
  • c:\documents and settings\administrator\c\porn.exe
  • c:\documents and settings\administrator\c\secret.exe
  • c:\documents and settings\administrator\c\sexy.exe
The malware creates the following files on your computer:
  • c:\documents and settings\administrator\rcx10.tmp
  • c:\documents and settings\administrator\rcx11.tmp
  • c:\documents and settings\administrator\rcx12.tmp
  • c:\documents and settings\administrator\rcx13.tmp
  • c:\documents and settings\administrator\rcx14.tmp
  • c:\documents and settings\administrator\rcx15.tmp
  • c:\documents and settings\administrator\rcx16.tmp
  • c:\documents and settings\administrator\rcx17.tmp
  • c:\documents and settings\administrator\rcx18.tmp
  • c:\documents and settings\administrator\rcx19.tmp
  • c:\documents and settings\administrator\rcx1a.tmp
  • c:\documents and settings\administrator\rcx1b.tmp
  • c:\documents and settings\administrator\rcx1c.tmp
  • c:\documents and settings\administrator\rcx1d.tmp
  • c:\documents and settings\administrator\rcx1e.tmp
  • c:\documents and settings\administrator\rcx1f.tmp
  • c:\documents and settings\administrator\rcx20.tmp
  • c:\documents and settings\administrator\rcx21.tmp
  • c:\documents and settings\administrator\rcx22.tmp
  • c:\documents and settings\administrator\rcx23.tmp


Spreads via€¦

Removable and network drives
TrojanDownloader:Win32/Beebone.LJ may create the following files on targeted drives when spreading:

  • :\passwords.exe
  • :\porn.exe
  • :\secret.exe
  • :\sexy.exe
  • :\subst.exe
  • :\tuejef.exe

It also places an autorun.inf file in the root directory of the targeted drive. Such autorun.inf files contain execution instructions for the operating system, so that when the removable drive is accessed from another computer supporting the Autorun feature, the malware is launched automatically.
Note: This worm was observed to write an executable and create an autorun.inf file on a targeted drive in our automated testing environment. This is particularly common malware behavior, generally utilized in order to spread malware from computer to computer. It should also be noted that autorun.inf files on their own are not necessarily a sign of infection, as they are used by legitimate programs and installation CDs.

Payload

Contacts remote host
TrojanDownloader:Win32/Beebone.LJ may contact a remote host at ns1.backupdate1.net using port 7004. Commonly, malware does this to:
  • Report a new infection to its author
  • Receive configuration or other data
  • Download and run files, including updates or other malware
  • Receive instruction from a remote hacker
  • Upload data taken from your PC

This malware description was produced and published using our automated analysis system's examination of file SHA1 4c433b90b2d5f84d4264ed00fff796549d14e156.Symptoms

System changes

The following could indicate that you have this threat on your PC:

  • The presence of the following files:

    c:\documents and settings\administrator\passwords.exe
    c:\documents and settings\administrator\porn.exe
    c:\documents and settings\administrator\rcx10.tmp
    c:\documents and settings\administrator\rcx11.tmp
    c:\documents and settings\administrator\rcx12.tmp
    c:\documents and settings\administrator\rcx13.tmp
    c:\documents and settings\administrator\rcx14.tmp
    c:\documents and settings\administrator\rcx15.tmp
    c:\documents and settings\administrator\rcx16.tmp
    c:\documents and settings\administrator\rcx17.tmp
    c:\documents and settings\administrator\rcx18.tmp
    c:\documents and settings\administrator\rcx19.tmp
    c:\documents and settings\administrator\rcx1a.tmp
    c:\documents and settings\administrator\rcx1b.tmp
    c:\documents and settings\administrator\rcx1c.tmp
    c:\documents and settings\administrator\rcx1d.tmp
    c:\documents and settings\administrator\rcx1e.tmp
    c:\documents and settings\administrator\rcx1f.tmp
    c:\documents and settings\administrator\rcx20.tmp
    c:\documents and settings\administrator\rcx21.tmp

Last update 04 December 2013

 

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