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Virus:JS/Expack.AD
Date discovered:06/03/2012
Type:JavaScript
In the wild:No
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
VDF version:7.11.24.184 - Tuesday, March 6, 2012
IVDF version:7.11.24.184 - Tuesday, March 6, 2012

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-Downloader.JS.Expack.gi
   •  Sophos: Mal/ExpJS-N
     GData: JS:Trojan.JS.Agent.AR


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003
    Windows Vista
    Windows Server 2008
    Windows 7


Side effects:
    Can be used to execute malicious code
   • Downloads a malicious file
    Drive-by download
   • Drops a malicious file

 Files It tries to download a file:

The location is the following:
   • http://**********.**********.org/content/**********.php?f=5e91c&d=1
It is saved on the local hard drive under: %TEMP%\l.vbs Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too.

 File details Programming language:
 • JavaScript

Description inserted by Wensin Lee on Wednesday, March 7, 2012
Description updated by Wensin Lee on Wednesday, March 7, 2012

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