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Worm:Win32/Vobfus.XF


First posted on 06 March 2014.
Source: Microsoft

Aliases :

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

Explanation :

Threat behavior Worm:Win32/Vobfus.XF is a member of Win32/Vobfus - a family of worms that spreads via network drives and removable drives. It may also download and execute arbitrary files.

Installation

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

  • c:\documents and settings\administrator\1.exe
  • c:\documents and settings\administrator\2.exe
  • c:\documents and settings\administrator\3.exe
  • c:\documents and settings\administrator\4.exe
  • c:\documents and settings\administrator\neoxuec.exe
  • c:\documents and settings\administrator\c\1.exe
  • c:\documents and settings\administrator\c\2.exe
  • c:\documents and settings\administrator\c\3.exe
  • c:\documents and settings\administrator\c\4.exe
The malware creates the following files on your PC:
  • 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
Worm:Win32/Vobfus.XF can create the following files on targeted drives:

  • :\i love you.exe
  • :\naked.exe
  • :\neoxuec.exe
  • :\password.exe
  • :\subst.exe
  • :\webcam.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 hosts
Worm:Win32/Vobfus.XF may contact the following remote hosts using port 7008:

  • ns1.backdates1.com
  • ns1.backdates9.com

Commonly, malware does this to:
  • Confirm Internet connectivity
  • 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 87cc4599eead204086fa01b1a7b14f370ff32038.Symptoms

System changes

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

  • You have these files:

c:\documents and settings\administrator\1.exe
c:\documents and settings\administrator\2.exe
c:\documents and settings\administrator\3.exe
c:\documents and settings\administrator\4.exe
c:\documents and settings\administrator\neoxuec.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

Last update 06 March 2014

 

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