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Worm:Win32/Vobfus.VS

First posted on 26 November 2013.
Source: Microsoft

Aliases :

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

Explanation :

Threat behavior Worm:Win32/Vobfus.VS 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.VS creates the following files on your computer:

• %windir%\assembly\nativeimages_v2.0.50727_32\temp\zap10.tmp\microsoft.build.utilities.v3.5.dll
• %windir%\assembly\nativeimages_v2.0.50727_32\temp\zape.tmp\microsoft.build.tasks.dll
• %windir%\assembly\nativeimages_v2.0.50727_32\temp\zapf.tmp\microsoft.build.tasks.v3.5.dll

Payload

Contacts remote hosts
Worm:Win32/Vobfus.VS may contact the following remote hosts:

• tools.google.com using port 80
• tools.google.com using port 443

Commonly, malware may contact a remote host for the following purposes:

• To confirm Internet connectivity
• To report a new infection to its author
• To receive configuration or other data
• To download and execute arbitrary files (including updates or additional malware)
• To receive instruction from a remote attacker
• To upload data taken from the affected computer

This malware description was produced and published using our automated analysis system's examination of file SHA1 2976ca060301243a1c9347af61132844f68d33a2.Symptoms

System changes

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

• The presence of the following files:
  
  %windir%\assembly\nativeimages_v2.0.50727_32\temp\zap10.tmp\microsoft.build.utilities.v3.5.dll
  %windir%\assembly\nativeimages_v2.0.50727_32\temp\zape.tmp\microsoft.build.tasks.dll
  %windir%\assembly\nativeimages_v2.0.50727_32\temp\zapf.tmp\microsoft.build.tasks.v3.5.dll

Last update 26 November 2013

 

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