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Virus:W32/Detnat.A
Date discovered:09/05/2006
Type:File infector
In the wild:No
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Medium to high
Static file:No
VDF version:6.34.01.52
IVDF version:6.34.01.53 - Tuesday, May 9, 2006

 General Method of propagation:
    Infects files


Aliases:
   •  Symantec: W32.Detnat
   •  Mcafee: W32/Detnat.a
   •  Kaspersky: Worm.Win32.Detnat.b
   •  F-Secure: Win32.Worm.Detnat.B
   •  Sophos: Troj/Detnat-V
   •  Bitdefender: Win32.Worm.Detnat.B
     Avast: Win32:Detnat-BK
     Microsoft: Virus:Win32/Detnat.E
   •  Panda: Trj/CI.A


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads malicious files
   • Drops a file
Infects files

 Files The following file is created:

%recycle bin%\SVCH0ST.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.Agent.OD.2




It tries to download a file:

The locations are the following:
   • http://www.yettz.com/**********/re.wos
   • http://www.cinetown.co.kr/**********/mvp.wos
   • http://www.cinetown.co.kr/**********/pop.wos
It is saved on the local hard drive under: %SYSDIR%\netrun%random numbers%.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too.

 File infection Infector type:

Prepender - The virus code is added at the begining of the infected file.


Method:

This direct-action infector actively searches for files.

From: 6.000 Bytes
To: 24.000 Bytes


The following file is infected:

By file type:
   • *.exe

Description inserted by Razvan Olteanu on Tuesday, February 15, 2011
Description updated by Razvan Olteanu on Wednesday, February 16, 2011

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