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Worm:Win32/Vobfus.AAF


First posted on 27 May 2014.
Source: Microsoft

Aliases :

There are no other names known for Worm:Win32/Vobfus.AAF.

Explanation :

Threat behavior

Installation

Worm:Win32/Vobfus.AAF copies itself to the following locations:

  • c:\documents and settings\administrator\rotaux\1.exe
  • c:\documents and settings\administrator\rotaux\2.exe
  • c:\documents and settings\administrator\rotaux\3.exe
  • c:\documents and settings\administrator\rotaux\4.exe
  • c:\documents and settings\administrator\rotaux\xuator.exe
The malware creates the following files on your PC:
  • c:\documents and settings\administrator\rotaux\rcx10.tmp
  • c:\documents and settings\administrator\rotaux\rcx11.tmp
  • c:\documents and settings\administrator\rotaux\rcx12.tmp
  • c:\documents and settings\administrator\rotaux\rcx13.tmp
  • c:\documents and settings\administrator\rotaux\rcx14.tmp
  • c:\documents and settings\administrator\rotaux\rcx15.tmp
  • c:\documents and settings\administrator\rotaux\rcx16.tmp
  • c:\documents and settings\administrator\rotaux\rcx17.tmp
  • c:\documents and settings\administrator\rotaux\rcx18.tmp
  • c:\documents and settings\administrator\rotaux\rcx19.tmp
  • c:\documents and settings\administrator\rotaux\rcx1a.tmp
  • c:\documents and settings\administrator\rotaux\rcx1b.tmp
  • c:\documents and settings\administrator\rotaux\rcx1c.tmp
  • c:\documents and settings\administrator\rotaux\rcxe.tmp
  • c:\documents and settings\administrator\rotaux\rcxf.tmp
  • c:\documents and settings\administrator\start menu\programs\startup\xuator.lnk


Spreads via€¦

Removable drives

Worm:Win32/Vobfus.AAF can create the following files on targeted drives when spreading:

  • :\favourites.lnk
  • :\i love you.exe
  • :\movies.lnk
  • :\music.lnk
  • :\naked.exe
  • :\password.exe
  • :\passwords.lnk
  • :\pictures.lnk
  • :\private.lnk
  • :\search.lnk
  • :\secret folder.lnk
  • :\sexy.exe
  • :\subst.exe
  • :\webcam.exe
  • :\xuator.exe

It also creates an autorun.inf file in the root folder of the removable drive. The file has instructions to launch the malware automatically when the removable drive is connected to a PC with the Autorun feature turned on.
This is a common way for malware to spread. However, autorun.inf files on their own are not necessarily a sign of infection; they are also used by legitimate programs.

Payload

Contacts remote host

Worm:Win32/Vobfus.AAF might contact a remote host at ns1.dnsfor0.com using port 7002. 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 instructions from a remote hacker
  • Upload data taken from your PC


This malware description was produced and published using automated analysis of file SHA1 803f699dbbf0dee9d8ac5a5875cc72bb7239d5bb.

Symptoms

System changes

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

  • You have these files:

    c:\documents and settings\administrator\rotaux\1.exe
    c:\documents and settings\administrator\rotaux\2.exe
    c:\documents and settings\administrator\rotaux\3.exe
    c:\documents and settings\administrator\rotaux\4.exe
    c:\documents and settings\administrator\rotaux\rcx10.tmp
    c:\documents and settings\administrator\rotaux\rcx11.tmp
    c:\documents and settings\administrator\rotaux\rcx12.tmp
    c:\documents and settings\administrator\rotaux\rcx13.tmp
    c:\documents and settings\administrator\rotaux\rcx14.tmp
    c:\documents and settings\administrator\rotaux\rcx15.tmp
    c:\documents and settings\administrator\rotaux\rcx16.tmp
    c:\documents and settings\administrator\rotaux\rcx17.tmp
    c:\documents and settings\administrator\rotaux\rcx18.tmp
    c:\documents and settings\administrator\rotaux\rcx19.tmp
    c:\documents and settings\administrator\rotaux\rcx1a.tmp
    c:\documents and settings\administrator\rotaux\rcx1b.tmp
    c:\documents and settings\administrator\rotaux\rcx1c.tmp
    c:\documents and settings\administrator\rotaux\rcxe.tmp
    c:\documents and settings\administrator\rotaux\rcxf.tmp
    c:\documents and settings\administrator\rotaux\xuator.exe

Last update 27 May 2014

 

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