Virus:Worm/Viking.N
Date discovered:17/07/2006
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:23.552 Bytes
MD5 checksum:98213641aaca1e7fa88a4ea77a2975ef
VDF version:6.35.00.123
IVDF version:6.35.00.151 - Wednesday, July 12, 2006

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: W32.Looked.P
   •  TrendMicro: PE_LOOKED.AE-O
   •  VirusBuster: Worm.Viking.R
   •  Bitdefender: Win32.Worm.Viking.E


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


Side effects:
   • Downloads malicious files
   • Registry modification

 Files It tries to download some files:

– The location is the following:
   • http://www.wowchian.com/sysdl/**********
It is saved on the local hard drive under: C:\1.txt

– The location is the following:
   • http://www.wowchian.com/sysdl/**********
It is saved on the local hard drive under: %malware execution directory%\0Sy.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Lineage.EM.5


– The location is the following:
   • http://www.wowchian.com/sysdl/**********
It is saved on the local hard drive under: %malware execution directory%\1Sy.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too.

– The location is the following:
   • http://www.wowchian.com/sysdl/**********
It is saved on the local hard drive under: %malware execution directory%\2Sy.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Lmir.12.A.3


– The location is the following:
   • http://www.wowchian.com/sysdl/**********
It is saved on the local hard drive under: %malware execution directory%\3Sy.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Lineage.VD

 Registry The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\Windows]
   • "ver_down0"="%number%.%number%"
   • "ver_down1"="%number%.%number%"
   • "ver_down2"="%number%.%number%"
   • "ver_down3"="%number%.%number%"

 File details Programming language:
 The malware program was written in Delphi.

Description inserted by Monica Ghitun on Monday, July 17, 2006
Description updated by Monica Ghitun on Thursday, August 3, 2006

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